| Item type |
文献 / Documents(1) |
| 公開日 |
2022-12-09 |
| アクセス権 |
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|
アクセス権 |
open access |
| 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 |
| 出版社版DOI |
|
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
https://doi.org/10.1038/s41467-021-27199-3 |
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|
言語 |
ja |
|
|
関連名称 |
10.1038/s41467-021-27199-3 |
| 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 |
Unveiling charge dynamics of visible light absorbing oxysulfide for efficient overall water splitting |
|
言語 |
en |
| 著者 |
Nandal, Vikas
ショウジ, リョウタ
マツザキ, ヒロユキ
古部, 昭広
Lin, Lihua
ヒサトミ, タカシ
カネコ, マサノリ
ヤマシタ, コウイチ
ドウメン, カズナリ
セキ, カズヒコ
|
| 抄録 |
|
|
内容記述タイプ |
Abstract |
|
内容記述 |
Oxysulfide semiconductor, Y2Ti2O5S2, has recently discovered its exciting potential for visible-light-induced overall water splitting, and therefore, imperatively requires the probing of unknown fundamental charge loss pathways to engineer the photoactivity enhancement. Herein, transient diffuse reflectance spectroscopy measurements are coupled with theoretical calculations to unveil the nanosecond to microsecond time range dynamics of the photogenerated charge carriers. In early nanosecond range, the pump-fluence-dependent decay dynamics of the absorption signal is originated from the bimolecular recombination of mobile charge carriers, in contrast, the power-law decay kinetics in late microsecond range is dominated by hole detrapping from exponential tail trap states of valence band. A well-calibrated theoretical model estimates various efficiency limiting material parameters like recombination rate constant, n-type doping density and tail-states parameters. Compared to metal oxides, longer effective carrier lifetime ~6 ns is demonstrated. Different design routes are proposed to realize efficiency beyond 10% for commercial solar-to-hydrogen production from oxysulfide photocatalysts. |
|
言語 |
en |
| 書誌情報 |
en : Nature Communications
巻 12,
p. 7055,
発行日 2021-12-07
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| 収録物ID |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
20411723 |
| 収録物ID |
|
|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA12645905 |
| 出版者 |
|
|
出版者 |
Springer Nature |
|
言語 |
en |
| 権利情報 |
|
|
言語 |
en |
|
権利情報 |
This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
| EID |
|
|
識別子 |
389780 |
|
識別子タイプ |
URI |
| 言語 |
|
|
言語 |
eng |
ncomms_12_7055.pdf (2.11 MB)
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