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https://hdl.handle.net/20.500.14094/90007802
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2024-09-01
09:42 集計
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90007802 (fulltext)
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1.63 MB
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ファイル出力
メタデータID
90007802
アクセス権
open access
出版タイプ
Accepted Manuscript
タイトル
In Situ Exploration of the Structural Transition during Morphology- and Efficiency-Conserving Halide Exchange on a Single Perovskite Nanocrystal
著者
著者名
Karimata, Izuru
著者ID
A0468
研究者ID
1000020432437
KUID
https://kuid-rm-web.ofc.kobe-u.ac.jp/search/detail?systemId=ade58ede97e538de520e17560c007669
著者名
Tachikawa, Takashi
立川, 貴士
タチカワ, タカシ
所属機関名
分子フォトサイエンス研究センター
言語
English (英語)
収録物名
Angewandte Chemie International Edition
巻(号)
60(5)
ページ
2548-2553
出版者
Wiley‐VCH Verlag
刊行日
2021-02-01
公開日
2022-03-01
抄録
Controlled fabrication of semiconductor nanostructures with unique physicochemical properties is vital for future technologies. In this study, transformation from red-emitting metal halide perovskite CH3NH3PbI3 nanocrystals (NCs) to green-emitting CH3NH3PbBr3 NCs was achieved without significant morphological changes and loss of photoluminescence (PL) efficiency via a controlled halide exchange reaction. In situ single-particle PL imaging along with detailed structural and elemental characterizations revealed that sudden cooperative transitions between two light-emitting states via intermediate dark states with >100 s durations during halide exchange originate from two distinct defect-mediated reconstruction processes with different activation energies (0.072 and 0.40 eV), leading to an isokinetic temperature of ca. 314 K, across a solid-state miscibility gap between the I- and Br-rich phases inside a single NC.
キーワード
ion exchange
metal halide perovskite
nanocrystals
photoluminescence
single-particle spectroscopy
カテゴリ
分子フォトサイエンス研究センター
学術雑誌論文
権利
© 2020 Wiley‐VCH GmbH. This is the peer reviewed version of the following article: [I. Karimata, T. Tachikawa, Angew. Chem. Int. Ed. 2021, 60, 2548-2553.], which has been published in final form at https://doi.org/10.1002/anie.202013386. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.
関連情報
DOI
https://doi.org/10.1002/anie.202013386
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資源タイプ
journal article
ISSN
1433-7851
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eISSN
1521-3773
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NCID
AA0052535X
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