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アイテム
Highly Luminescent Phase-Stable CsPbI3 Perovskite Quantum Dots Achieving Near 100% Absolute Photoluminescence Quantum Yield
http://hdl.handle.net/10228/00006957
http://hdl.handle.net/10228/000069571be15df8-958f-480b-a990-abe06af120fc
| 名前 / ファイル | ライセンス | アクション |
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ACSnano11_10373.pdf (1.5 MB)
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| アイテムタイプ | 学術雑誌論文 = Journal Article(1) | |||||
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| 公開日 | 2018-10-24 | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| タイトル | ||||||
| タイトル | Highly Luminescent Phase-Stable CsPbI3 Perovskite Quantum Dots Achieving Near 100% Absolute Photoluminescence Quantum Yield | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 著者 |
Liu, Feng
× Liu, Feng× Zhang, Yaohong× Ding, Chao× Kobayashi, Syuusuke× Izuishi, Takuya× Nakazawa, Naoki× Toyoda, Taro× Ohta, Tsuyoshi× 早瀬, 修二× Minemoto, Takashi× Yoshino, Kenji× Dai, Songyuan× Shen, Qing |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Perovskite quantum dots (QDs) as a new type of colloidal nanocrystals have gained significant attention for both fundamental research and commercial applications owing to their appealing optoelectronic properties and excellent chemical processability. For their wide range of potential applications, synthesizing colloidal QDs with high crystal quality is of crucial importance. However, like most common QD systems such as CdSe and PbS, those reported perovskite QDs still suffer from a certain density of trapping defects, giving rise to detrimental nonradiative recombination centers and thus quenching luminescence. In this paper, we show that a high room-temperature photoluminescence quantum yield of up to 100% can be obtained in CsPbI3 perovskite QDs, signifying the achievement of almost complete elimination of the trapping defects. This is realized with our improved synthetic protocol that involves introducing organolead compound trioctylphosphine–PbI2 (TOP–PbI2) as the reactive precursor, which also leads to a significantly improved stability for the resulting CsPbI3 QD solutions. Ultrafast kinetic analysis with time-resolved transient absorption spectroscopy evidence the negligible electron or hole-trapping pathways in our QDs, which explains such a high quantum efficiency. We expect the successful synthesis of the “ideal” perovskite QDs will exert profound influence on their applications to both QD-based light-harvesting and -emitting devices. | |||||
| 書誌情報 |
en : ACS Nano 巻 11, 号 10, p. 10373-10383, 発行日 2017-10-24 |
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| 出版社 | ||||||
| 出版者 | American Chemical Society | |||||
| 言語 | en | |||||
| DOI | ||||||
| 関連タイプ | isVersionOf | |||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | https://doi.org/10.1021/acsnano.7b05442 | |||||
| NCID | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AA1240653X | |||||
| ISSN | ||||||
| 収録物識別子タイプ | PISSN | |||||
| 収録物識別子 | 1936-0851 | |||||
| ISSN | ||||||
| 収録物識別子タイプ | EISSN | |||||
| 収録物識別子 | 1936-086X | |||||
| 著作権関連情報 | ||||||
| 権利情報 | American Chemical Society. This material is excerpted from a work that was published in ACS Nano, Copyright (c) American Chemical Society after peer review. To access the final edited and published work see https://pubs.acs.org/doi/abs/10.1021/acsnano.7b05442. | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | cesium lead halide perovskite nanocrystals | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | colloidal nanoparticles | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | perovskite quantum dot | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | photoluminescence quantum yield | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | stable perovskite | |||||
| 出版タイプ | ||||||
| 出版タイプ | AM | |||||
| 出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
| 査読の有無 | ||||||
| 値 | yes | |||||
| 研究者情報 | ||||||
| URL | https://hyokadb02.jimu.kyutech.ac.jp/html/322_ja.html | |||||
| 論文ID（連携） | ||||||
| 値 | 10310144 | |||||
| 連携ID | ||||||
| 値 | 6670 | |||||
