2014年11月
Direct Imaging of Light Emission Centers in Two-Dimensional Crystals and Their Luminescence and Photocatalytic Properties
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
- ,
- ,
- ,
- ,
- 巻
- 53
- 号
- 48
- 開始ページ
- 13078
- 終了ページ
- 13082
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1002/anie.201406638
- 出版者・発行元
- WILEY-V C H VERLAG GMBH
To fully understand the fundamental properties of light-energy-converting materials, it is important to determine the local atomic configuration of photofunctional centers. In this study, direct imaging of one-and two-Tb-atom emission centers in a two-dimensional Tb-doped Ca2Ta3O10 nanocrystal was carried. The emission centers were located at the Ca sites in the perovskite structure, and no concentration-based quenching was observed even when the emission centers were in close proximity to each other. The relative photoluminescence efficiency for green emission of the nanosheet suspension was 38.1%. Furthermore, the Tb-doped Ca2Ta3O10 nanocrystal deposited co-catalyst showed high photocatalytic activity for hydrogen production from water (quantum efficiency: 71% at 270 nm). Tb3+ dopants in the two-dimensional crystal might have the potential to stabilize the charge separation state.
- リンク情報
-
- DOI
- https://doi.org/10.1002/anie.201406638
- Web of Science
- https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000345317000012&DestApp=WOS_CPL
- URL
- https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84915751189&origin=inward
- ID情報
-
- DOI : 10.1002/anie.201406638
- ISSN : 1433-7851
- eISSN : 1521-3773
- Web of Science ID : WOS:000345317000012