METHOD AND SYSTEM FOR DIFFUSING MAGNESIUM IN GALLIUM NITRIDE MATERIALS USING SPUTTERED MAGNESIUM SOURCES | Matter42 Literature
Patent
Atlas literature
Patent
US 11,881,404 B2
METHOD AND SYSTEM FOR DIFFUSING MAGNESIUM IN GALLIUM NITRIDE MATERIALS USING SPUTTERED MAGNESIUM SOURCES
Ozgur Aktas, Vladimir Odnoblyudov, Cem Basceri
QROMIS, INC., Santa Clara, CA (US)·Jan. 23, 2024·US
Drawings
Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1
FIG. 1 is a simplified cross-sectional diagram illustrating 65 a GaN substrate according to an embodiment of the present invention. B₂
FIG. 2
FIG. 2 is a simplified cross-sectional diagram illustrating a GaN substrate and a magnesium source according to an embodiment of the present invention.
FIG. 3
FIG. 3B is a simplified process flow for fabricating a magnesium diffusion source according to another embodi- ment of the present invention.
FIG. 4
FIG. 4 is a simplified cross-sectional diagram illustrating a capped GaN substrate according to an embodiment of the present invention.
FIG. 5
FIG. 5 is a simplified cross-sectional diagram illustrating a GaN substrate structure after an annealing process accord- ing to an embodiment of the present …
FIG. 6
FIG. 6B is a simplified cross-sectional diagram illustrat- ing a GaN substrate and a p-type doped GaN layer according to an embodiment of the present invention.
FIG. 7
FIG. 7 is plot illustrating doping of AlGaN using mag- nesium according to an embodiment of the present inven- tion.
FIG. 8
FIG. 8 is a simplified schematic diagram illustrating an engineered substrate structure according to some embodi- ments of the present invention.
FIG. 9
FIG. 9 is a simplified flowchart illustrating a method of forming a p-type GaN layer according to an embodiment of the present invention.
Claims
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
2 independent · 18 dependent
1
IndependentGaNMgdielectric capping structure
A method of forming a p-type gallium nitride layer, the method comprising: providing a substrate structure including an epitaxial gallium nitride layer; sputtering a dopant source including magnesium onto the epitaxial gallium nitride layer; patterning the dopant source to form a patterned dopant source region and one or more openings to the epitaxial gallium nitride layer; depositing a dielectric capping structure over the pat-terned dopant source region and the one or more openings; thereafter, annealing the substrate structure at a tempera-ture ranging from about 1000° C. to about 1400° C. to diffuse magnesium into the epitaxial gallium nitride layer; removing the dielectric capping structure and the pat-terned dopant source region; and thereafter, activating the diffused magnesium to form the p-type gallium nitride layer.
2
Dependent← claim 1MgF₂
The method of claim 1 wherein the dopant source comprises a layer of magnesium fluoride having a thickness ranging from 20 nm to 50 nm.
3
Dependent← claim 1aluminum nitride magnesium composite material
The method of claim 1 wherein the dopant source comprises a layer of an aluminum nitride magnesium com-posite material having a thickness ranging from 5 nm to 50 nm.
4
Dependent← claim 1engineered substrate structure
The method of claim 1 wherein the substrate structure comprises: a polycrystalline ceramic core; a barrier layer encapsulating the polycrystalline ceramic core; a bonding layer coupled to the barrier layer; and a substantially single crystalline layer coupled to the bonding layer.
The method of claim 1 wherein the dielectric capping structure comprises AlN/SiO₂ or AlN/SiN.
6
IndependentGaNdielectric capping structure
A method of forming a doped gallium nitride layer, the method comprising: providing a substrate structure including an epitaxial gallium nitride layer; forming a dopant source layer over the epitaxial gallium nitride layer; patterning the dopant source layer to form a patterned dopant source region and one or more openings to the epitaxial gallium nitride layer; depositing a dielectric capping structure over the pat-terned dopant source region and the one or more openings; thereafter, annealing the substrate structure at a tempera-ture ranging from about 1000° C. to about 1400° C. to diffuse dopants into the epitaxial gallium nitride layer; removing the dielectric capping structure and the pat-terned dopant source region; and thereafter, activating the diffused dopants.
7
Dependent← claim 6
The method of claim 6 wherein forming the dopant source layer comprises sputtering the dopant source layer over the epitaxial gallium nitride layer.
8
Dependent← claim 6
The method of claim 6 further comprising, prior to forming the dopant source layer, performing a surface preparation process.
12
Dependent← claim 6GaN
The method of claim 6 wherein the epitaxial gallium nitride layer is undoped.
13
Dependent← claim 6MgGaN
The method of claim 6 wherein the dopant source layer comprises magnesium having a thickness ranging from 5 nm to 20 nm and the epitaxial gallium nitride layer comprises a p-type gallium nitride layer.
14
Dependent← claim 6MgF₂
The method of claim 6 wherein the dopant source layer comprises magnesium fluoride having a thickness ranging from 20 nm to 50 nm.
15
Dependent← claim 6aluminum nitride magnesium composite material
The method of claim 6 wherein the dopant source layer comprises an aluminum nitride magnesium composite material having a thickness ranging from 5 nm to 50 nm.
The method of claim 6 wherein the dielectric capping structure comprises AlN/SiO₂ or AlN/SiN.
18
Dependent← claim 6engineered substrate structure
The method of claim 6 wherein the substrate structure comprises: a polycrystalline ceramic core; a barrier layer encapsulating the polycrystalline ceramic core; a bonding layer coupled to the barrier layer; and a substantially single crystalline layer coupled to the bonding layer.
19
Dependent← claim 6
The method of claim 6 wherein the dielectric capping structure is operable to anneal magnesium implant damage in the substrate structure.
20
Dependent← claim 6
The method of claim 6 further comprising, prior to forming the dopant source layer, forming a mask on the epitaxial gallium nitride layer, wherein the mask exposes one or more portions of a top surface of the epitaxial gallium nitride layer. ∗ ∗ ∗ ∗ ∗
Device structures
Layer stacks claimed or described, ordered top of device to substrate.
METHOD AND SYSTEM FOR DIFFUSING MAGNESIUM IN GALLIUM NITRIDE MATERIALS USING SPUTTERED MAGNESIUM SOURCES
Ozgur Aktas, Vladimir Odnoblyudov, Cem Basceri
QROMIS, INC., Santa Clara, CA (US)·Jan. 23, 2024·US
Drawings
Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1
FIG. 1 is a simplified cross-sectional diagram illustrating 65 a GaN substrate according to an embodiment of the present invention. B₂
FIG. 2
FIG. 2 is a simplified cross-sectional diagram illustrating a GaN substrate and a magnesium source according to an embodiment of the present invention.
FIG. 3
FIG. 3B is a simplified process flow for fabricating a magnesium diffusion source according to another embodi- ment of the present invention.
FIG. 4
FIG. 4 is a simplified cross-sectional diagram illustrating a capped GaN substrate according to an embodiment of the present invention.
FIG. 5
FIG. 5 is a simplified cross-sectional diagram illustrating a GaN substrate structure after an annealing process accord- ing to an embodiment of the present …
FIG. 6
FIG. 6B is a simplified cross-sectional diagram illustrat- ing a GaN substrate and a p-type doped GaN layer according to an embodiment of the present invention.
FIG. 7
FIG. 7 is plot illustrating doping of AlGaN using mag- nesium according to an embodiment of the present inven- tion.
FIG. 8
FIG. 8 is a simplified schematic diagram illustrating an engineered substrate structure according to some embodi- ments of the present invention.
FIG. 9
FIG. 9 is a simplified flowchart illustrating a method of forming a p-type GaN layer according to an embodiment of the present invention.
Claims
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
2 independent · 18 dependent
1
IndependentGaNMgdielectric capping structure
A method of forming a p-type gallium nitride layer, the method comprising: providing a substrate structure including an epitaxial gallium nitride layer; sputtering a dopant source including magnesium onto the epitaxial gallium nitride layer; patterning the dopant source to form a patterned dopant source region and one or more openings to the epitaxial gallium nitride layer; depositing a dielectric capping structure over the pat-terned dopant source region and the one or more openings; thereafter, annealing the substrate structure at a tempera-ture ranging from about 1000° C. to about 1400° C. to diffuse magnesium into the epitaxial gallium nitride layer; removing the dielectric capping structure and the pat-terned dopant source region; and thereafter, activating the diffused magnesium to form the p-type gallium nitride layer.
2
Dependent← claim 1MgF₂
The method of claim 1 wherein the dopant source comprises a layer of magnesium fluoride having a thickness ranging from 20 nm to 50 nm.
3
Dependent← claim 1aluminum nitride magnesium composite material
The method of claim 1 wherein the dopant source comprises a layer of an aluminum nitride magnesium com-posite material having a thickness ranging from 5 nm to 50 nm.
4
Dependent← claim 1engineered substrate structure
The method of claim 1 wherein the substrate structure comprises: a polycrystalline ceramic core; a barrier layer encapsulating the polycrystalline ceramic core; a bonding layer coupled to the barrier layer; and a substantially single crystalline layer coupled to the bonding layer.
The method of claim 1 wherein the dielectric capping structure comprises AlN/SiO₂ or AlN/SiN.
6
IndependentGaNdielectric capping structure
A method of forming a doped gallium nitride layer, the method comprising: providing a substrate structure including an epitaxial gallium nitride layer; forming a dopant source layer over the epitaxial gallium nitride layer; patterning the dopant source layer to form a patterned dopant source region and one or more openings to the epitaxial gallium nitride layer; depositing a dielectric capping structure over the pat-terned dopant source region and the one or more openings; thereafter, annealing the substrate structure at a tempera-ture ranging from about 1000° C. to about 1400° C. to diffuse dopants into the epitaxial gallium nitride layer; removing the dielectric capping structure and the pat-terned dopant source region; and thereafter, activating the diffused dopants.
7
Dependent← claim 6
The method of claim 6 wherein forming the dopant source layer comprises sputtering the dopant source layer over the epitaxial gallium nitride layer.
8
Dependent← claim 6
The method of claim 6 further comprising, prior to forming the dopant source layer, performing a surface preparation process.
12
Dependent← claim 6GaN
The method of claim 6 wherein the epitaxial gallium nitride layer is undoped.
13
Dependent← claim 6MgGaN
The method of claim 6 wherein the dopant source layer comprises magnesium having a thickness ranging from 5 nm to 20 nm and the epitaxial gallium nitride layer comprises a p-type gallium nitride layer.
14
Dependent← claim 6MgF₂
The method of claim 6 wherein the dopant source layer comprises magnesium fluoride having a thickness ranging from 20 nm to 50 nm.
15
Dependent← claim 6aluminum nitride magnesium composite material
The method of claim 6 wherein the dopant source layer comprises an aluminum nitride magnesium composite material having a thickness ranging from 5 nm to 50 nm.
The method of claim 6 wherein the dielectric capping structure comprises AlN/SiO₂ or AlN/SiN.
18
Dependent← claim 6engineered substrate structure
The method of claim 6 wherein the substrate structure comprises: a polycrystalline ceramic core; a barrier layer encapsulating the polycrystalline ceramic core; a bonding layer coupled to the barrier layer; and a substantially single crystalline layer coupled to the bonding layer.
19
Dependent← claim 6
The method of claim 6 wherein the dielectric capping structure is operable to anneal magnesium implant damage in the substrate structure.
20
Dependent← claim 6
The method of claim 6 further comprising, prior to forming the dopant source layer, forming a mask on the epitaxial gallium nitride layer, wherein the mask exposes one or more portions of a top surface of the epitaxial gallium nitride layer. ∗ ∗ ∗ ∗ ∗
Device structures
Layer stacks claimed or described, ordered top of device to substrate.
METHOD AND SYSTEM FOR DIFFUSING MAGNESIUM IN GALLIUM NITRIDE MATERIALS USING SPUTTERED MAGNESIUM SOURCES
Ozgur Aktas, Vladimir Odnoblyudov, Cem Basceri
QROMIS, INC., Santa Clara, CA (US)·Jan. 23, 2024·US
Drawings
Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1
FIG. 1 is a simplified cross-sectional diagram illustrating 65 a GaN substrate according to an embodiment of the present invention. B₂
FIG. 2
FIG. 2 is a simplified cross-sectional diagram illustrating a GaN substrate and a magnesium source according to an embodiment of the present invention.
FIG. 3
FIG. 3B is a simplified process flow for fabricating a magnesium diffusion source according to another embodi- ment of the present invention.
FIG. 4
FIG. 4 is a simplified cross-sectional diagram illustrating a capped GaN substrate according to an embodiment of the present invention.
FIG. 5
FIG. 5 is a simplified cross-sectional diagram illustrating a GaN substrate structure after an annealing process accord- ing to an embodiment of the present …
FIG. 6
FIG. 6B is a simplified cross-sectional diagram illustrat- ing a GaN substrate and a p-type doped GaN layer according to an embodiment of the present invention.
FIG. 7
FIG. 7 is plot illustrating doping of AlGaN using mag- nesium according to an embodiment of the present inven- tion.
FIG. 8
FIG. 8 is a simplified schematic diagram illustrating an engineered substrate structure according to some embodi- ments of the present invention.
FIG. 9
FIG. 9 is a simplified flowchart illustrating a method of forming a p-type GaN layer according to an embodiment of the present invention.
Claims
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
2 independent · 18 dependent
1
IndependentGaNMgdielectric capping structure
A method of forming a p-type gallium nitride layer, the method comprising: providing a substrate structure including an epitaxial gallium nitride layer; sputtering a dopant source including magnesium onto the epitaxial gallium nitride layer; patterning the dopant source to form a patterned dopant source region and one or more openings to the epitaxial gallium nitride layer; depositing a dielectric capping structure over the pat-terned dopant source region and the one or more openings; thereafter, annealing the substrate structure at a tempera-ture ranging from about 1000° C. to about 1400° C. to diffuse magnesium into the epitaxial gallium nitride layer; removing the dielectric capping structure and the pat-terned dopant source region; and thereafter, activating the diffused magnesium to form the p-type gallium nitride layer.
2
Dependent← claim 1MgF₂
The method of claim 1 wherein the dopant source comprises a layer of magnesium fluoride having a thickness ranging from 20 nm to 50 nm.
3
Dependent← claim 1aluminum nitride magnesium composite material
The method of claim 1 wherein the dopant source comprises a layer of an aluminum nitride magnesium com-posite material having a thickness ranging from 5 nm to 50 nm.
4
Dependent← claim 1engineered substrate structure
The method of claim 1 wherein the substrate structure comprises: a polycrystalline ceramic core; a barrier layer encapsulating the polycrystalline ceramic core; a bonding layer coupled to the barrier layer; and a substantially single crystalline layer coupled to the bonding layer.
The method of claim 1 wherein the dielectric capping structure comprises AlN/SiO₂ or AlN/SiN.
6
IndependentGaNdielectric capping structure
A method of forming a doped gallium nitride layer, the method comprising: providing a substrate structure including an epitaxial gallium nitride layer; forming a dopant source layer over the epitaxial gallium nitride layer; patterning the dopant source layer to form a patterned dopant source region and one or more openings to the epitaxial gallium nitride layer; depositing a dielectric capping structure over the pat-terned dopant source region and the one or more openings; thereafter, annealing the substrate structure at a tempera-ture ranging from about 1000° C. to about 1400° C. to diffuse dopants into the epitaxial gallium nitride layer; removing the dielectric capping structure and the pat-terned dopant source region; and thereafter, activating the diffused dopants.
7
Dependent← claim 6
The method of claim 6 wherein forming the dopant source layer comprises sputtering the dopant source layer over the epitaxial gallium nitride layer.
8
Dependent← claim 6
The method of claim 6 further comprising, prior to forming the dopant source layer, performing a surface preparation process.
12
Dependent← claim 6GaN
The method of claim 6 wherein the epitaxial gallium nitride layer is undoped.
13
Dependent← claim 6MgGaN
The method of claim 6 wherein the dopant source layer comprises magnesium having a thickness ranging from 5 nm to 20 nm and the epitaxial gallium nitride layer comprises a p-type gallium nitride layer.
14
Dependent← claim 6MgF₂
The method of claim 6 wherein the dopant source layer comprises magnesium fluoride having a thickness ranging from 20 nm to 50 nm.
15
Dependent← claim 6aluminum nitride magnesium composite material
The method of claim 6 wherein the dopant source layer comprises an aluminum nitride magnesium composite material having a thickness ranging from 5 nm to 50 nm.
The method of claim 6 wherein the dielectric capping structure comprises AlN/SiO₂ or AlN/SiN.
18
Dependent← claim 6engineered substrate structure
The method of claim 6 wherein the substrate structure comprises: a polycrystalline ceramic core; a barrier layer encapsulating the polycrystalline ceramic core; a bonding layer coupled to the barrier layer; and a substantially single crystalline layer coupled to the bonding layer.
19
Dependent← claim 6
The method of claim 6 wherein the dielectric capping structure is operable to anneal magnesium implant damage in the substrate structure.
20
Dependent← claim 6
The method of claim 6 further comprising, prior to forming the dopant source layer, forming a mask on the epitaxial gallium nitride layer, wherein the mask exposes one or more portions of a top surface of the epitaxial gallium nitride layer. ∗ ∗ ∗ ∗ ∗
Device structures
Layer stacks claimed or described, ordered top of device to substrate.
METHOD AND SYSTEM FOR DIFFUSING MAGNESIUM IN GALLIUM NITRIDE MATERIALS USING SPUTTERED MAGNESIUM SOURCES
Ozgur Aktas, Vladimir Odnoblyudov, Cem Basceri
QROMIS, INC., Santa Clara, CA (US)·Jan. 23, 2024·US
Drawings
Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1
FIG. 1 is a simplified cross-sectional diagram illustrating 65 a GaN substrate according to an embodiment of the present invention. B₂
FIG. 2
FIG. 2 is a simplified cross-sectional diagram illustrating a GaN substrate and a magnesium source according to an embodiment of the present invention.
FIG. 3
FIG. 3B is a simplified process flow for fabricating a magnesium diffusion source according to another embodi- ment of the present invention.
FIG. 4
FIG. 4 is a simplified cross-sectional diagram illustrating a capped GaN substrate according to an embodiment of the present invention.
FIG. 5
FIG. 5 is a simplified cross-sectional diagram illustrating a GaN substrate structure after an annealing process accord- ing to an embodiment of the present …
FIG. 6
FIG. 6B is a simplified cross-sectional diagram illustrat- ing a GaN substrate and a p-type doped GaN layer according to an embodiment of the present invention.
FIG. 7
FIG. 7 is plot illustrating doping of AlGaN using mag- nesium according to an embodiment of the present inven- tion.
FIG. 8
FIG. 8 is a simplified schematic diagram illustrating an engineered substrate structure according to some embodi- ments of the present invention.
FIG. 9
FIG. 9 is a simplified flowchart illustrating a method of forming a p-type GaN layer according to an embodiment of the present invention.
Claims
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
2 independent · 18 dependent
1
IndependentGaNMgdielectric capping structure
A method of forming a p-type gallium nitride layer, the method comprising: providing a substrate structure including an epitaxial gallium nitride layer; sputtering a dopant source including magnesium onto the epitaxial gallium nitride layer; patterning the dopant source to form a patterned dopant source region and one or more openings to the epitaxial gallium nitride layer; depositing a dielectric capping structure over the pat-terned dopant source region and the one or more openings; thereafter, annealing the substrate structure at a tempera-ture ranging from about 1000° C. to about 1400° C. to diffuse magnesium into the epitaxial gallium nitride layer; removing the dielectric capping structure and the pat-terned dopant source region; and thereafter, activating the diffused magnesium to form the p-type gallium nitride layer.
2
Dependent← claim 1MgF₂
The method of claim 1 wherein the dopant source comprises a layer of magnesium fluoride having a thickness ranging from 20 nm to 50 nm.
3
Dependent← claim 1aluminum nitride magnesium composite material
The method of claim 1 wherein the dopant source comprises a layer of an aluminum nitride magnesium com-posite material having a thickness ranging from 5 nm to 50 nm.
4
Dependent← claim 1engineered substrate structure
The method of claim 1 wherein the substrate structure comprises: a polycrystalline ceramic core; a barrier layer encapsulating the polycrystalline ceramic core; a bonding layer coupled to the barrier layer; and a substantially single crystalline layer coupled to the bonding layer.
The method of claim 1 wherein the dielectric capping structure comprises AlN/SiO₂ or AlN/SiN.
6
IndependentGaNdielectric capping structure
A method of forming a doped gallium nitride layer, the method comprising: providing a substrate structure including an epitaxial gallium nitride layer; forming a dopant source layer over the epitaxial gallium nitride layer; patterning the dopant source layer to form a patterned dopant source region and one or more openings to the epitaxial gallium nitride layer; depositing a dielectric capping structure over the pat-terned dopant source region and the one or more openings; thereafter, annealing the substrate structure at a tempera-ture ranging from about 1000° C. to about 1400° C. to diffuse dopants into the epitaxial gallium nitride layer; removing the dielectric capping structure and the pat-terned dopant source region; and thereafter, activating the diffused dopants.
7
Dependent← claim 6
The method of claim 6 wherein forming the dopant source layer comprises sputtering the dopant source layer over the epitaxial gallium nitride layer.
8
Dependent← claim 6
The method of claim 6 further comprising, prior to forming the dopant source layer, performing a surface preparation process.
12
Dependent← claim 6GaN
The method of claim 6 wherein the epitaxial gallium nitride layer is undoped.
13
Dependent← claim 6MgGaN
The method of claim 6 wherein the dopant source layer comprises magnesium having a thickness ranging from 5 nm to 20 nm and the epitaxial gallium nitride layer comprises a p-type gallium nitride layer.
14
Dependent← claim 6MgF₂
The method of claim 6 wherein the dopant source layer comprises magnesium fluoride having a thickness ranging from 20 nm to 50 nm.
15
Dependent← claim 6aluminum nitride magnesium composite material
The method of claim 6 wherein the dopant source layer comprises an aluminum nitride magnesium composite material having a thickness ranging from 5 nm to 50 nm.
The method of claim 6 wherein the dielectric capping structure comprises AlN/SiO₂ or AlN/SiN.
18
Dependent← claim 6engineered substrate structure
The method of claim 6 wherein the substrate structure comprises: a polycrystalline ceramic core; a barrier layer encapsulating the polycrystalline ceramic core; a bonding layer coupled to the barrier layer; and a substantially single crystalline layer coupled to the bonding layer.
19
Dependent← claim 6
The method of claim 6 wherein the dielectric capping structure is operable to anneal magnesium implant damage in the substrate structure.
20
Dependent← claim 6
The method of claim 6 further comprising, prior to forming the dopant source layer, forming a mask on the epitaxial gallium nitride layer, wherein the mask exposes one or more portions of a top surface of the epitaxial gallium nitride layer. ∗ ∗ ∗ ∗ ∗
Device structures
Layer stacks claimed or described, ordered top of device to substrate.
purpose:diffuse magnesium into epitaxial GaN layer
capping structure:dielectric capping structure deposited prior to anneal
Materials:GaN
20–50 nm
—
Temperature
1100–1200 °C
—
Thickness
1–20 nm
—
Thickness
10–50 nm
—
Thickness
100–200 nm
—
Thickness
25–200 nm
—
Thickness
5–20 µm
—
Thickness
2–10 µm
—
Thickness
10–100 nm
—
Thickness
40–300 nm
—
Thickness
20–200 nm
—
Thickness
60–500 nm
—
Pressure
100–2250.186 Torr
—
Temperature
1000–1400 °C
—
Thickness
50–200 nm
—
Thickness
75–100 nm
—
Thickness
100–2000 Å
—
Thickness
2000–5000 Å
—
Temperature
800–1100 °C
—
Thickness
5–20 nm
—
Thickness
5–50 nm
—
Temperature
600–800 °C
—
Thickness
100–1500 µm
—
Thickness
500–5000 Å
—
Thickness
0.75–1.5 µm
—
US 10,297,445 B2
10,297,445 B2 5/2019 Odnoblyudov et al.
US 2008/0088021 A12008/0088021 A1 * 4/2008 Wada................ H01L 21/76843examiner
US 2008/0090395 A12008/0090395 A1 * 4/2008 Sugimoto............. H01L 29/452examiner
US 2008/0248639 A12008/0248639 A1 10/2008 Moriyama
US 2009/0246924 A12009/0246924 A1 10/2009 Niiyama et al.
US 2010/0144123 A12010/0144123 A1 * 6/2010 Park.................... H01L 21/2258examiner
US 2010/0267197 A12010/0267197 A1 * 10/2010 Shieh.................. H01L 29/7869examiner
US 2012/0252196 A12012/0252196 A1 * 10/2012 Clark.................... H01L 29/517examiner
US 2013/0075748 A12013/0075748 A1 * 3/2013 Bour................. H01L 29/66136examiner
US 2014/0065799 A12014/0065799 A1 3/2014 Ahmed
US 2015/0099350 A12015/0099350 A1 4/2015 Srinivasan et al.
US 2016/0093698 A12016/0093698 A1 * 3/2016 Agraffeil............. H01L 21/3245examiner
US 2016/0233108 A12016/0233108 A1 8/2016 Feigelson et al.
US 2017/0316933 A12017/0316933 A1 * 11/2017 Xie......................... H01L 29/36examiner
US 2018/0047975 A12018/0047975 A1 2/2018 Zhu et al.
US 2019/0252186 A12019/0252186 A1 8/2019 Aktas et al.
US 2019/0393038 A12019/0393038 A1 * 12/2019 Voss.................. H01L 21/28575examiner
Cited non-patent literature · 2
The International Search Report and Written Opinion of the Inter- national Searching Authority in related International Application No. PCT/US2021/017434, dated Apr. 21, 2021 (nine pages).
International Preliminary Report on Patentability dated Aug. 25, 2022 in related PCT/US2021/017434 (eight pages).
purpose:diffuse magnesium into epitaxial GaN layer
capping structure:dielectric capping structure deposited prior to anneal
Materials:GaN
20–50 nm
—
Temperature
1100–1200 °C
—
Thickness
1–20 nm
—
Thickness
10–50 nm
—
Thickness
100–200 nm
—
Thickness
25–200 nm
—
Thickness
5–20 µm
—
Thickness
2–10 µm
—
Thickness
10–100 nm
—
Thickness
40–300 nm
—
Thickness
20–200 nm
—
Thickness
60–500 nm
—
Pressure
100–2250.186 Torr
—
Temperature
1000–1400 °C
—
Thickness
50–200 nm
—
Thickness
75–100 nm
—
Thickness
100–2000 Å
—
Thickness
2000–5000 Å
—
Temperature
800–1100 °C
—
Thickness
5–20 nm
—
Thickness
5–50 nm
—
Temperature
600–800 °C
—
Thickness
100–1500 µm
—
Thickness
500–5000 Å
—
Thickness
0.75–1.5 µm
—
US 10,297,445 B2
10,297,445 B2 5/2019 Odnoblyudov et al.
US 2008/0088021 A12008/0088021 A1 * 4/2008 Wada................ H01L 21/76843examiner
US 2008/0090395 A12008/0090395 A1 * 4/2008 Sugimoto............. H01L 29/452examiner
US 2008/0248639 A12008/0248639 A1 10/2008 Moriyama
US 2009/0246924 A12009/0246924 A1 10/2009 Niiyama et al.
US 2010/0144123 A12010/0144123 A1 * 6/2010 Park.................... H01L 21/2258examiner
US 2010/0267197 A12010/0267197 A1 * 10/2010 Shieh.................. H01L 29/7869examiner
US 2012/0252196 A12012/0252196 A1 * 10/2012 Clark.................... H01L 29/517examiner
US 2013/0075748 A12013/0075748 A1 * 3/2013 Bour................. H01L 29/66136examiner
US 2014/0065799 A12014/0065799 A1 3/2014 Ahmed
US 2015/0099350 A12015/0099350 A1 4/2015 Srinivasan et al.
US 2016/0093698 A12016/0093698 A1 * 3/2016 Agraffeil............. H01L 21/3245examiner
US 2016/0233108 A12016/0233108 A1 8/2016 Feigelson et al.
US 2017/0316933 A12017/0316933 A1 * 11/2017 Xie......................... H01L 29/36examiner
US 2018/0047975 A12018/0047975 A1 2/2018 Zhu et al.
US 2019/0252186 A12019/0252186 A1 8/2019 Aktas et al.
US 2019/0393038 A12019/0393038 A1 * 12/2019 Voss.................. H01L 21/28575examiner
Cited non-patent literature · 2
The International Search Report and Written Opinion of the Inter- national Searching Authority in related International Application No. PCT/US2021/017434, dated Apr. 21, 2021 (nine pages).
International Preliminary Report on Patentability dated Aug. 25, 2022 in related PCT/US2021/017434 (eight pages).
purpose:diffuse magnesium into epitaxial GaN layer
capping structure:dielectric capping structure deposited prior to anneal
Materials:GaN
20–50 nm
—
Temperature
1100–1200 °C
—
Thickness
1–20 nm
—
Thickness
10–50 nm
—
Thickness
100–200 nm
—
Thickness
25–200 nm
—
Thickness
5–20 µm
—
Thickness
2–10 µm
—
Thickness
10–100 nm
—
Thickness
40–300 nm
—
Thickness
20–200 nm
—
Thickness
60–500 nm
—
Pressure
100–2250.186 Torr
—
Temperature
1000–1400 °C
—
Thickness
50–200 nm
—
Thickness
75–100 nm
—
Thickness
100–2000 Å
—
Thickness
2000–5000 Å
—
Temperature
800–1100 °C
—
Thickness
5–20 nm
—
Thickness
5–50 nm
—
Temperature
600–800 °C
—
Thickness
100–1500 µm
—
Thickness
500–5000 Å
—
Thickness
0.75–1.5 µm
—
US 10,297,445 B2
10,297,445 B2 5/2019 Odnoblyudov et al.
US 2008/0088021 A12008/0088021 A1 * 4/2008 Wada................ H01L 21/76843examiner
US 2008/0090395 A12008/0090395 A1 * 4/2008 Sugimoto............. H01L 29/452examiner
US 2008/0248639 A12008/0248639 A1 10/2008 Moriyama
US 2009/0246924 A12009/0246924 A1 10/2009 Niiyama et al.
US 2010/0144123 A12010/0144123 A1 * 6/2010 Park.................... H01L 21/2258examiner
US 2010/0267197 A12010/0267197 A1 * 10/2010 Shieh.................. H01L 29/7869examiner
US 2012/0252196 A12012/0252196 A1 * 10/2012 Clark.................... H01L 29/517examiner
US 2013/0075748 A12013/0075748 A1 * 3/2013 Bour................. H01L 29/66136examiner
US 2014/0065799 A12014/0065799 A1 3/2014 Ahmed
US 2015/0099350 A12015/0099350 A1 4/2015 Srinivasan et al.
US 2016/0093698 A12016/0093698 A1 * 3/2016 Agraffeil............. H01L 21/3245examiner
US 2016/0233108 A12016/0233108 A1 8/2016 Feigelson et al.
US 2017/0316933 A12017/0316933 A1 * 11/2017 Xie......................... H01L 29/36examiner
US 2018/0047975 A12018/0047975 A1 2/2018 Zhu et al.
US 2019/0252186 A12019/0252186 A1 8/2019 Aktas et al.
US 2019/0393038 A12019/0393038 A1 * 12/2019 Voss.................. H01L 21/28575examiner
Cited non-patent literature · 2
The International Search Report and Written Opinion of the Inter- national Searching Authority in related International Application No. PCT/US2021/017434, dated Apr. 21, 2021 (nine pages).
International Preliminary Report on Patentability dated Aug. 25, 2022 in related PCT/US2021/017434 (eight pages).
purpose:diffuse magnesium into epitaxial GaN layer
capping structure:dielectric capping structure deposited prior to anneal
Materials:GaN
20–50 nm
—
Temperature
1100–1200 °C
—
Thickness
1–20 nm
—
Thickness
10–50 nm
—
Thickness
100–200 nm
—
Thickness
25–200 nm
—
Thickness
5–20 µm
—
Thickness
2–10 µm
—
Thickness
10–100 nm
—
Thickness
40–300 nm
—
Thickness
20–200 nm
—
Thickness
60–500 nm
—
Pressure
100–2250.186 Torr
—
Temperature
1000–1400 °C
—
Thickness
50–200 nm
—
Thickness
75–100 nm
—
Thickness
100–2000 Å
—
Thickness
2000–5000 Å
—
Temperature
800–1100 °C
—
Thickness
5–20 nm
—
Thickness
5–50 nm
—
Temperature
600–800 °C
—
Thickness
100–1500 µm
—
Thickness
500–5000 Å
—
Thickness
0.75–1.5 µm
—
US 10,297,445 B2
10,297,445 B2 5/2019 Odnoblyudov et al.
US 2008/0088021 A12008/0088021 A1 * 4/2008 Wada................ H01L 21/76843examiner
US 2008/0090395 A12008/0090395 A1 * 4/2008 Sugimoto............. H01L 29/452examiner
US 2008/0248639 A12008/0248639 A1 10/2008 Moriyama
US 2009/0246924 A12009/0246924 A1 10/2009 Niiyama et al.
US 2010/0144123 A12010/0144123 A1 * 6/2010 Park.................... H01L 21/2258examiner
US 2010/0267197 A12010/0267197 A1 * 10/2010 Shieh.................. H01L 29/7869examiner
US 2012/0252196 A12012/0252196 A1 * 10/2012 Clark.................... H01L 29/517examiner
US 2013/0075748 A12013/0075748 A1 * 3/2013 Bour................. H01L 29/66136examiner
US 2014/0065799 A12014/0065799 A1 3/2014 Ahmed
US 2015/0099350 A12015/0099350 A1 4/2015 Srinivasan et al.
US 2016/0093698 A12016/0093698 A1 * 3/2016 Agraffeil............. H01L 21/3245examiner
US 2016/0233108 A12016/0233108 A1 8/2016 Feigelson et al.
US 2017/0316933 A12017/0316933 A1 * 11/2017 Xie......................... H01L 29/36examiner
US 2018/0047975 A12018/0047975 A1 2/2018 Zhu et al.
US 2019/0252186 A12019/0252186 A1 8/2019 Aktas et al.
US 2019/0393038 A12019/0393038 A1 * 12/2019 Voss.................. H01L 21/28575examiner
Cited non-patent literature · 2
The International Search Report and Written Opinion of the Inter- national Searching Authority in related International Application No. PCT/US2021/017434, dated Apr. 21, 2021 (nine pages).
International Preliminary Report on Patentability dated Aug. 25, 2022 in related PCT/US2021/017434 (eight pages).