| Item type |
文献 / Documents(1) |
| 公開日 |
2024-07-11 |
| アクセス権 |
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|
アクセス権 |
open access |
| 資源タイプ |
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|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
journal article |
| 出版社版DOI |
|
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|
識別子タイプ |
DOI |
|
|
関連識別子 |
https://doi.org/10.1039/d3nr01032e |
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|
言語 |
ja |
|
|
関連名称 |
10.1039/d3nr01032e |
| 出版タイプ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| タイトル |
|
|
タイトル |
Photoinduced interfacial electron transfer from perovskite quantum dots to molecular acceptors for solar cells |
|
言語 |
en |
| 著者 |
Sachith, Bhagyashree Mahesha
Zhang, Zhijing
Subramanyam, Palyam
Subrahmanyam, Challapalli
古部, 昭広
タマイ, ナオト
オカモト, タクヤ
ミサワ, ヒロアキ
Biju, Vasudevanpillai
|
| 抄録 |
|
|
内容記述タイプ |
Abstract |
|
内容記述 |
Bandgap-engineered inorganic and hybrid halide perovskite (HP) films, nanocrystals, and quantum dots (PQDs) are promising for solar cells. Fluctuations of photoinduced electron transfer (PET) rates affect the interfacial charge separation efficiencies of such solar cells. Electron donor- or acceptor-doped perovskite samples help analyze PET and harvest photogenerated charge carriers efficiently. Therefore, PET in perovskite-based donor–acceptor (D–A) systems has received considerable attention. We analyzed the fluctuations of interfacial PET from MAPbBr3 or CsPbBr3 PQDs to classical electron acceptors such as 7,7,8,8-tetracyanoquinodimethane (TCNQ) and 1,2,4,5-tetracyanobenzene (TCNB) at single-particle and ensemble levels. The significantly negative Gibbs free energy changes (ΔG°et = –0.16 to – 1.16 eV) of of PET estimated from the donor–acceptor redox potentials, the donor–acceptor sizes, and the solvent dielectric properties help us clarify the PET in the above D–A systems. The dynamic nature of PET is apparent from the decrease in photoluminescence (PL) lifetimes and PL photocounts of PQDs with an increase in the acceptor concentrations. Also, the acceptor radical anion spectrum helps us characterize the charge-separated states. Furthermore, the PL blinking time and PET rate fluctuations (108 to 107 s−1) provide us with single-molecule level information about interfacial PET in perovskites. |
|
言語 |
en |
| 書誌情報 |
en : Nanoscale
巻 15,
号 17,
p. 7695-7702,
発行日 2023-04-10
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| 収録物ID |
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|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
20403372 |
| 収録物ID |
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|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
20403364 |
| 出版者 |
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|
出版者 |
Royal Society of Chemistry |
|
言語 |
en |
| 権利情報 |
|
|
言語 |
en |
|
権利情報 |
This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. |
| EID |
|
|
識別子 |
400878 |
|
識別子タイプ |
URI |
| 言語 |
|
|
言語 |
eng |
Nanoscale_15_17_7695.pdf (5.95 MB)
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