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Interlayer donor-acceptor pair excitons in MoSe(2)/WSe(2) moiré heterobilayer
Localized interlayer excitons (LIXs) in two-dimensional moiré superlattices exhibit sharp and dense emission peaks, making them promising as highly tunable single-photon sources. However, the fundamental nature of these LIXs is still elusive. Here, we show the donor-acceptor pair (DAP) mechanism as...
| Autores principales: | , , , , , , , , , , , , , , , , , , , , |
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| Formato: | Online Artículo Texto |
| Lenguaje: | English |
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Nature Publishing Group UK
2023
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| Materias: | |
| Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10507070/ https://www.ncbi.nlm.nih.gov/pubmed/37723156 http://dx.doi.org/10.1038/s41467-023-41330-6 |
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| author | Cai, Hongbing Rasmita, Abdullah Tan, Qinghai Lai, Jia-Min He, Ruihua Cai, Xiangbin Zhao, Yan Chen, Disheng Wang, Naizhou Mu, Zhao Huang, Zumeng Zhang, Zhaowei Eng, John J. H. Liu, Yuanda She, Yongzhi Pan, Nan Miao, Yansong Wang, Xiaoping Liu, Xiaogang Zhang, Jun Gao, Weibo |
| author_facet | Cai, Hongbing Rasmita, Abdullah Tan, Qinghai Lai, Jia-Min He, Ruihua Cai, Xiangbin Zhao, Yan Chen, Disheng Wang, Naizhou Mu, Zhao Huang, Zumeng Zhang, Zhaowei Eng, John J. H. Liu, Yuanda She, Yongzhi Pan, Nan Miao, Yansong Wang, Xiaoping Liu, Xiaogang Zhang, Jun Gao, Weibo |
| author_sort | Cai, Hongbing |
| collection | PubMed |
| description | Localized interlayer excitons (LIXs) in two-dimensional moiré superlattices exhibit sharp and dense emission peaks, making them promising as highly tunable single-photon sources. However, the fundamental nature of these LIXs is still elusive. Here, we show the donor-acceptor pair (DAP) mechanism as one of the origins of these excitonic peaks. Numerical simulation results of the DAP model agree with the experimental photoluminescence spectra of LIX in the moiré MoSe(2)/WSe(2) heterobilayer. In particular, we find that the emission energy-lifetime correlation and the nonmonotonic power dependence of the lifetime agree well with the DAP IX model. Our results provide insight into the physical mechanism of LIX formation in moiré heterostructures and pave new directions for engineering interlayer exciton properties in moiré superlattices. |
| format | Online Article Text |
| id | pubmed-10507070 |
| institution | National Center for Biotechnology Information |
| language | English |
| publishDate | 2023 |
| publisher | Nature Publishing Group UK |
| record_format | MEDLINE/PubMed |
| spelling | pubmed-105070702023-09-20 Interlayer donor-acceptor pair excitons in MoSe(2)/WSe(2) moiré heterobilayer Cai, Hongbing Rasmita, Abdullah Tan, Qinghai Lai, Jia-Min He, Ruihua Cai, Xiangbin Zhao, Yan Chen, Disheng Wang, Naizhou Mu, Zhao Huang, Zumeng Zhang, Zhaowei Eng, John J. H. Liu, Yuanda She, Yongzhi Pan, Nan Miao, Yansong Wang, Xiaoping Liu, Xiaogang Zhang, Jun Gao, Weibo Nat Commun Article Localized interlayer excitons (LIXs) in two-dimensional moiré superlattices exhibit sharp and dense emission peaks, making them promising as highly tunable single-photon sources. However, the fundamental nature of these LIXs is still elusive. Here, we show the donor-acceptor pair (DAP) mechanism as one of the origins of these excitonic peaks. Numerical simulation results of the DAP model agree with the experimental photoluminescence spectra of LIX in the moiré MoSe(2)/WSe(2) heterobilayer. In particular, we find that the emission energy-lifetime correlation and the nonmonotonic power dependence of the lifetime agree well with the DAP IX model. Our results provide insight into the physical mechanism of LIX formation in moiré heterostructures and pave new directions for engineering interlayer exciton properties in moiré superlattices. Nature Publishing Group UK 2023-09-18 /pmc/articles/PMC10507070/ /pubmed/37723156 http://dx.doi.org/10.1038/s41467-023-41330-6 Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
| spellingShingle | Article Cai, Hongbing Rasmita, Abdullah Tan, Qinghai Lai, Jia-Min He, Ruihua Cai, Xiangbin Zhao, Yan Chen, Disheng Wang, Naizhou Mu, Zhao Huang, Zumeng Zhang, Zhaowei Eng, John J. H. Liu, Yuanda She, Yongzhi Pan, Nan Miao, Yansong Wang, Xiaoping Liu, Xiaogang Zhang, Jun Gao, Weibo Interlayer donor-acceptor pair excitons in MoSe(2)/WSe(2) moiré heterobilayer |
| title | Interlayer donor-acceptor pair excitons in MoSe(2)/WSe(2) moiré heterobilayer |
| title_full | Interlayer donor-acceptor pair excitons in MoSe(2)/WSe(2) moiré heterobilayer |
| title_fullStr | Interlayer donor-acceptor pair excitons in MoSe(2)/WSe(2) moiré heterobilayer |
| title_full_unstemmed | Interlayer donor-acceptor pair excitons in MoSe(2)/WSe(2) moiré heterobilayer |
| title_short | Interlayer donor-acceptor pair excitons in MoSe(2)/WSe(2) moiré heterobilayer |
| title_sort | interlayer donor-acceptor pair excitons in mose(2)/wse(2) moiré heterobilayer |
| topic | Article |
| url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10507070/ https://www.ncbi.nlm.nih.gov/pubmed/37723156 http://dx.doi.org/10.1038/s41467-023-41330-6 |
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