Enhanced Photoresponse of FeS2 Films: The Role of Marcasite-Pyrite Phase Junctions
详细信息 查看全文
- 作者：Longfei Wu ; Nelson Y. Dzade ; Lu Gao ; David O. Scanlon ; Zafer Ö ; ztü ; rk ; Nathan Hollingsworth ; Bert M. Weckhuysen ; Emiel J. M. Hensen ; Nora H. de Leeuw and Jan P. Hofmann
- 刊名：Advanced Materials
- 出版年：2016
- 出版时间：November 16, 2016
- 年：2016
- 卷：28
- 期：43
- 页码：9602-9607
- 全文大小：1284K
- ISSN：1521-4095
文摘
The beneficial role of marcasite in iron-sulfide-based photo-electrochemical applications is reported for the first time. A spectacular improvement of the photoresponse observed experimentally for mixed pyrite/marcasite-FeS2 films can be ascribed to the presence of p/m phase junctions at the interface. Density functional theory calculations show that the band alignment at the phase boundary contributes to enhanced charge separation and transfer across the interface.