Environment-assisted quantum transport of excitons in perovskite nanocrystal superlattices
Abstract Transport of energy carriers in solid-state materials is determined by their wavefunctions and interactions with the environment. While quantum transport theory has predicted distinct transport in the intermediate coupling regime resulting from the intricate interplay between coherent wave-...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-02-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-024-55812-8 |
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| author | Daria D. Blach Victoria A. Lumsargis-Roth Chern Chuang Daniel E. Clark Shibin Deng Olivia F. Williams Christina W. Li Jianshu Cao Libai Huang |
| author_facet | Daria D. Blach Victoria A. Lumsargis-Roth Chern Chuang Daniel E. Clark Shibin Deng Olivia F. Williams Christina W. Li Jianshu Cao Libai Huang |
| author_sort | Daria D. Blach |
| collection | DOAJ |
| description | Abstract Transport of energy carriers in solid-state materials is determined by their wavefunctions and interactions with the environment. While quantum transport theory has predicted distinct transport in the intermediate coupling regime resulting from the intricate interplay between coherent wave-like and incoherent particle-like mechanisms, these predictions are awaiting experimental evidence. Here we demonstrate quantum transport signatures in perovskite nanocrystal superlattices by imaging exciton propagation with high spatial and temporal resolutions over 7-298 K. At 7 K, coherent propagation of the excitons dominates, with transient ballistic motion within a coherence length of up to 40 nanocrystal sites. The interference of the wave-like motion leads to Anderson Localization in the long-time limit. As temperature increases, a peak in the long-time diffusion constant is observed at a temperature where static disorder and dephasing are balanced, which substantiates evidence for environment-assisted quantum transport. Our results connect theoretical predictions and experiments using a stochastic Anderson localization model, highlighting perovskite nanocrystals as promising building blocks for quantum materials. |
| format | Article |
| id | doaj-art-5a9c6fc691074bbf904e684dabbb318e |
| institution | Kabale University |
| issn | 2041-1723 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-5a9c6fc691074bbf904e684dabbb318e2025-02-02T12:32:38ZengNature PortfolioNature Communications2041-17232025-02-0116111110.1038/s41467-024-55812-8Environment-assisted quantum transport of excitons in perovskite nanocrystal superlatticesDaria D. Blach0Victoria A. Lumsargis-Roth1Chern Chuang2Daniel E. Clark3Shibin Deng4Olivia F. Williams5Christina W. Li6Jianshu Cao7Libai Huang8Department of Chemistry, Purdue UniversityDepartment of Chemistry, Purdue UniversityDepartment of Chemistry and Biochemistry, University of NevadaDepartment of Chemistry, Purdue UniversityDepartment of Chemistry, Purdue UniversityDepartment of Chemistry, Purdue UniversityDepartment of Chemistry, Purdue UniversityDepartment of Chemistry, Massachusetts Institute of TechnologyDepartment of Chemistry, Purdue UniversityAbstract Transport of energy carriers in solid-state materials is determined by their wavefunctions and interactions with the environment. While quantum transport theory has predicted distinct transport in the intermediate coupling regime resulting from the intricate interplay between coherent wave-like and incoherent particle-like mechanisms, these predictions are awaiting experimental evidence. Here we demonstrate quantum transport signatures in perovskite nanocrystal superlattices by imaging exciton propagation with high spatial and temporal resolutions over 7-298 K. At 7 K, coherent propagation of the excitons dominates, with transient ballistic motion within a coherence length of up to 40 nanocrystal sites. The interference of the wave-like motion leads to Anderson Localization in the long-time limit. As temperature increases, a peak in the long-time diffusion constant is observed at a temperature where static disorder and dephasing are balanced, which substantiates evidence for environment-assisted quantum transport. Our results connect theoretical predictions and experiments using a stochastic Anderson localization model, highlighting perovskite nanocrystals as promising building blocks for quantum materials.https://doi.org/10.1038/s41467-024-55812-8 |
| spellingShingle | Daria D. Blach Victoria A. Lumsargis-Roth Chern Chuang Daniel E. Clark Shibin Deng Olivia F. Williams Christina W. Li Jianshu Cao Libai Huang Environment-assisted quantum transport of excitons in perovskite nanocrystal superlattices Nature Communications |
| title | Environment-assisted quantum transport of excitons in perovskite nanocrystal superlattices |
| title_full | Environment-assisted quantum transport of excitons in perovskite nanocrystal superlattices |
| title_fullStr | Environment-assisted quantum transport of excitons in perovskite nanocrystal superlattices |
| title_full_unstemmed | Environment-assisted quantum transport of excitons in perovskite nanocrystal superlattices |
| title_short | Environment-assisted quantum transport of excitons in perovskite nanocrystal superlattices |
| title_sort | environment assisted quantum transport of excitons in perovskite nanocrystal superlattices |
| url | https://doi.org/10.1038/s41467-024-55812-8 |
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