|
Hokkaido University Collection of Scholarly and Academic Papers >
Research Institute for Electronic Science >
Peer-reviewed Journal Articles, etc >
Photon Recycling by Energy Transfer in Piezochemically Synthesized and Close-Packed Methylammonium Lead Halide Perovskites
| Title: | Photon Recycling by Energy Transfer in Piezochemically Synthesized and Close-Packed Methylammonium Lead Halide Perovskites |
| Authors: | Ghimire, Sushant Browse this author | | Takahashi, Kiyonori Browse this author →KAKEN DB | | Takano, Yuta Browse this author | | Nakamura, Takayoshi Browse this author →KAKEN DB | | Biju, Vasudevanpillai Browse this author |
| Issue Date: | 14-Nov-2019 |
| Publisher: | American Chemical Society |
| Journal Title: | The Journal of Physical Chemistry C |
| Volume: | 123 |
| Issue: | 45 |
| Start Page: | 27752 |
| End Page: | 27758 |
| Publisher DOI: | 10.1021/acs.jpcc.9b07003 |
| Abstract: | Photon recycling by multiple reabsorption-emission is responsible for the long-range energy transport in large crystals and thick films of lead halide perovskites, resulting in red-shifted and delayed emission. Apart from such a radiative process, nonradiative energy transfer influences photon recycling in perovskites with close-packed donor-acceptor-type states. In this study, we report the role of nonradiative energy transfer on photon recycling in piezochemically synthesized and close-packed pure and mixed halide methylammonium lead perovskites. Here, the pressure applied to precursors of perovskites helps us to synthesize and close-pack perovskite crystallites into pellets. Nonetheless, interestingly, we find that the applied pressure redistributes the emission maxima or band- gap of these perovskites. The temporally and spectrally resolved photoluminescence from the mixed halide sample unveils nonradiative energy transfer from a higher (bromide) to a lower (iodide) band-gap domain, where the rate of relaxation of the bromide domain is higher than that of the pure bromide perovskite. These results help us to confirm the role of nonradiative energy transfer on photon recycling in perovskites. |
| Rights: | This document is the Accepted Manuscript version of a Published Work that appeared in final form in The Journal of Physical Chemistry C, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://pubs.acs.org/doi/10.1021/acs.jpcc.9b07003 . |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/79748 |
| 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)
|
Submitter: BIJU, Vasudevan Pillai
|
