Research paperExperimental CharacterizationTheoreticalInterlayer donor-acceptor pair excitons in MoSe₂/WSe₂ moiré heterobilayerHongbing Cai, Abdullah Rasmita, Qinghai Tan, Jia-Min Lai et al.2023·10.1038/s41467-023-41330-6·arXiv:2302.13003AbstractLocalized interlayer excitons (LIXs) in two-dimensional moiré superlattices exhibit sharp and dense emission peaks, making them promising as highly tunable single-photon sources. This paper shows that a donor-acceptor pair (DAP) mechanism is one of the origins of these excitonic peaks. Numerical simulation results of the DAP model agree with experimental photoluminescence spectra of LIX in a moiré MoSe₂/WSe₂ heterobilayer. The emission energy-lifetime correlation and the nonmonotonic power dependence of the lifetime are consistent with the DAP IX model, providing evidence that DAP IX is the primary origin of multiple sharp PL peaks in moiré heterobilayers.Read more
hBN-encapsulated MoSe₂/WSe₂ heterobilayer on nanopillars used for localized interlayer exciton photoluminescence measurements.1 preparation5 characterizations8 properties4 figuresExperimentalMoSe₂Studied MaterialWSe₂Studied MaterialBNSubstrate / Dielectricnanopillar arraySubstrate / DielectricExpand
Research paperExperimental CharacterizationTheoreticalInterlayer donor-acceptor pair excitons in MoSe₂/WSe₂ moiré heterobilayerHongbing Cai, Abdullah Rasmita, Qinghai Tan, Jia-Min Lai et al.2023·10.1038/s41467-023-41330-6·arXiv:2302.13003AbstractLocalized interlayer excitons (LIXs) in two-dimensional moiré superlattices exhibit sharp and dense emission peaks, making them promising as highly tunable single-photon sources. This paper shows that a donor-acceptor pair (DAP) mechanism is one of the origins of these excitonic peaks. Numerical simulation results of the DAP model agree with experimental photoluminescence spectra of LIX in a moiré MoSe₂/WSe₂ heterobilayer. The emission energy-lifetime correlation and the nonmonotonic power dependence of the lifetime are consistent with the DAP IX model, providing evidence that DAP IX is the primary origin of multiple sharp PL peaks in moiré heterobilayers.Read more
hBN-encapsulated MoSe₂/WSe₂ heterobilayer on nanopillars used for localized interlayer exciton photoluminescence measurements.1 preparation5 characterizations8 properties4 figuresExperimentalMoSe₂Studied MaterialWSe₂Studied MaterialBNSubstrate / Dielectricnanopillar arraySubstrate / DielectricExpand
Research paperExperimental CharacterizationTheoreticalInterlayer donor-acceptor pair excitons in MoSe₂/WSe₂ moiré heterobilayerHongbing Cai, Abdullah Rasmita, Qinghai Tan, Jia-Min Lai et al.2023·10.1038/s41467-023-41330-6·arXiv:2302.13003AbstractLocalized interlayer excitons (LIXs) in two-dimensional moiré superlattices exhibit sharp and dense emission peaks, making them promising as highly tunable single-photon sources. This paper shows that a donor-acceptor pair (DAP) mechanism is one of the origins of these excitonic peaks. Numerical simulation results of the DAP model agree with experimental photoluminescence spectra of LIX in a moiré MoSe₂/WSe₂ heterobilayer. The emission energy-lifetime correlation and the nonmonotonic power dependence of the lifetime are consistent with the DAP IX model, providing evidence that DAP IX is the primary origin of multiple sharp PL peaks in moiré heterobilayers.Read more
hBN-encapsulated MoSe₂/WSe₂ heterobilayer on nanopillars used for localized interlayer exciton photoluminescence measurements.1 preparation5 characterizations8 properties4 figuresExperimentalMoSe₂Studied MaterialWSe₂Studied MaterialBNSubstrate / Dielectricnanopillar arraySubstrate / DielectricExpand
Research paperExperimental CharacterizationTheoreticalInterlayer donor-acceptor pair excitons in MoSe₂/WSe₂ moiré heterobilayerHongbing Cai, Abdullah Rasmita, Qinghai Tan, Jia-Min Lai et al.2023·10.1038/s41467-023-41330-6·arXiv:2302.13003AbstractLocalized interlayer excitons (LIXs) in two-dimensional moiré superlattices exhibit sharp and dense emission peaks, making them promising as highly tunable single-photon sources. This paper shows that a donor-acceptor pair (DAP) mechanism is one of the origins of these excitonic peaks. Numerical simulation results of the DAP model agree with experimental photoluminescence spectra of LIX in a moiré MoSe₂/WSe₂ heterobilayer. The emission energy-lifetime correlation and the nonmonotonic power dependence of the lifetime are consistent with the DAP IX model, providing evidence that DAP IX is the primary origin of multiple sharp PL peaks in moiré heterobilayers.Read more
hBN-encapsulated MoSe₂/WSe₂ heterobilayer on nanopillars used for localized interlayer exciton photoluminescence measurements.1 preparation5 characterizations8 properties4 figuresExperimentalMoSe₂Studied MaterialWSe₂Studied MaterialBNSubstrate / Dielectricnanopillar arraySubstrate / DielectricExpand
