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Channeling Exciton Migration into Electron Transfer in Formamidinium Lead Bromide Perovskite Nanocrystal/Fullerene Composites
| Title: | Channeling Exciton Migration into Electron Transfer in Formamidinium Lead Bromide Perovskite Nanocrystal/Fullerene Composites |
| Authors: | Nair, Vijayakumar C. Browse this author | | Muthu, Chinnadurai Browse this author | | Rogach, Andrey L. Browse this author | | Kohara, Reiko Browse this author | | Biju, Vasudevanpillai Browse this author |
| Keywords: | electron transfer | | exciton migration | | fluorescence quenching | | fullerenes | | perovskite nanocrystals |
| Issue Date: | 24-Jan-2017 |
| Publisher: | Wiley-Blackwell |
| Journal Title: | Angewandte chemie-international edition |
| Volume: | 56 |
| Issue: | 5 |
| Start Page: | 1214 |
| End Page: | 1218 |
| Publisher DOI: | 10.1002/anie.201610070 |
| PMID: | 28035788 |
| Abstract: | Hydrophobically capped nanocrystals of formamidinium lead bromide (FAPbBr(3)) perovskite (PNC) show bright and stable fluorescence in solution and thin-film states. When compared with isolated PNCs in a solution, closepacked PNCs in a thin film show extended fluorescence lifetime (ca. 4.2 mu s), which is due to hopping or migration of photogenerated excitons among PNCs. Both fluorescence quantum efficiency and lifetime decrease in a PNC thin film doped with fullerene (C-60), which is attributed to channeling of exciton migration into electron transfer to C-60. On the other hand, quenching of fluorescence intensity of a PNC solution is not accompanied by any change in fluorescence lifetime, indicating static electron transfer to C-60 adsorbed onto the hydrophobic surface of individual PNCs. Exciton migration among close-packed PNCs and electron transfer to C-60 places C-60-doped PNC thin films among cost-effective antenna systems for solar cells. |
| Rights: | This is the peer reviewed version of the following article: [V. C. Nair, C. Muthu, A. L. Rogach, R. Kohara, V. Biju, Angew. Chem. Int. Ed. 2017, 56(5), 1214-1218.], which has been published in final form at http://dx.doi.org/10.1002/anie.201610070. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/68017 |
| Appears in Collections: | 電子科学研究所 (Research Institute for Electronic Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: BIJU, Vasudevan Pillai
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