| アイテムタイプ |
itemtype_ver1(1) |
| 公開日 |
2025-10-20 |
| タイトル |
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タイトル |
Tailoring Energy Structure of Low‐Toxic Ternary Ag−Bi−S Quantum Dots through Solution‐Phase Synthesis for Quantum‐Dot‐Sensitized Solar Cells |
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言語 |
en |
| 著者 |
Zhang, Wentao
Akiyoshi, Kazutaka
Kameyama, Tatsuya
Torimoto, Tsukasa
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| アクセス権 |
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アクセス権 |
open access |
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アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 権利 |
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権利情報 |
"This is the peer reviewed version of the following article: [W. Zhang, K. Akiyoshi, T. Kameyama, T. Torimoto, ChemNanoMat 2024, 10, e202400029. https://doi.org/10.1002/cnma.202400029], which has been published in final form at [https://doi.org/10.1002/cnma.202400029]. 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." |
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言語 |
en |
| 内容記述 |
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内容記述タイプ |
Abstract |
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内容記述 |
Low-toxic multinary semiconductor quantum dots (QDs) showing a photoresponse in a wide wavelength range from visible to near-IR wavelength regions have been intensively investigated for fabricating efficient solar light conversion systems. Recently, AgBiS2 QDs have attracted much attention for their application to improve the performance of QD solar cells because they have a large absorption coefficient in the visible and near-IR regions. In this report, we describe solution-phase preparation of ternary Ag−Bi−S QDs with different sizes and with different Ag/Bi ratios. The average size of resulting spherical Ag−Bi−S QDs was controllable from 2.7 to 8.1 nm by adjusting the reaction temperature from 373 to 473 K, while the Ag fraction of obtained QDs also increased with an increase in particle size. The absorption onset wavelength shifted from 850 to 1200 nm in the near-IR region as the particle size increased. AgBiS2 QDs with an almost stoichiometric composition, obtained at reaction temperatures of 423 K and 473 K, contained no deep intragap states and exhibited a p-type semiconductor behavior, while QDs prepared at a reaction temperature of 393 K or lower had non-stoichiometric Ag-deficient compositions producing intragap defect states. Sensitized solar cells fabricated with stoichiometric AgBiS2 QDs exhibited a photoresponse in visible and near-IR wavelength regions, the optimal PCE being 0.74% with AgBiS2 QDs of 6.2 nm in diameter that were prepared at 423 K. |
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言語 |
en |
| 出版者 |
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出版者 |
Wiley |
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言語 |
en |
| 言語 |
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言語 |
eng |
| 資源タイプ |
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資源タイプresource |
http://purl.org/coar/resource_type/c_6501 |
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タイプ |
journal article |
| 出版タイプ |
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出版タイプ |
AM |
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出版タイプResource |
http://purl.org/coar/version/c_ab4af688f83e57aa |
| 関連情報 |
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関連タイプ |
isVersionOf |
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識別子タイプ |
DOI |
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関連識別子 |
https://doi.org/10.1002/cnma.202400029 |
| 収録物識別子 |
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収録物識別子タイプ |
PISSN |
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収録物識別子 |
2199-692X |
| 書誌情報 |
en : ChemNanoMat
巻 10,
号 10,
p. e202400029,
発行日 2024-10
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Tailoring_Energy_Structure_of_Low-Toxic_Ternary_Ag-Bi-S_Quantum_Dots.pdf (835 KB)
