Issue 2, 2011
From the journal:

Energy & Environmental Science

The roles of defect states in photoelectric and photocatalytic processes for ZnxCd1−xS

Jianying Shi,*a   Hua'nan Cui,a   Zhenxing Liang,b   Xihong Lu,a   Yexiang Tong,a   Chengyong Sua  and  Hong Liua  

* Corresponding authors

a Sun Yat-sen University, School of Chemistry and Chemical Engineering, Guangzhou, China
E-mail: shijying@mail.sysu.edu.cn

b South China University of Technology, School of Chemistry and Chemical Engineering, Guangzhou, China

Abstract

This work aims to investigate the role that defect states play in photoelectric and photocatalytic processes. Ternary ZnxCd1−xS with wurtzite structure is firstly synthesized, and then the defect is characterized by photoluminescence (PL) spectroscopy. It is found that the photoelectrons trapped in surface defect states exhibit different behavior in the processes of photoelectric transfer and photocatalytic hydrogen evolution. During the photocatalytic process, the surface defect states in ZnxCd1−xS act as the electron pool to improve the photocatalytic activity of water-splitting reaction. In comparison, the surface defect states serve as the recombination center that decreases the efficiency of photoelectric transfer. This finding is of great significance for the design of effective photoelectric and photocatalytic material in the field of solar energy conversion.

Graphical abstract: The roles of defect states in photoelectric and photocatalytic processes for ZnxCd1−xS

About
Cited by
Related
Download options Please wait...

Article information

DOI
https://doi.org/10.1039/C0EE00309C
Article type
Paper
Submitted
27 Jul 2010
Accepted
08 Sep 2010
First published
04 Nov 2010

Energy Environ. Sci., 2011,4, 466-470

Permissions

Request permissions

The roles of defect states in photoelectric and photocatalytic processes for ZnxCd1−xS

J. Shi, H. Cui, Z. Liang, X. Lu, Y. Tong, C. Su and H. Liu, Energy Environ. Sci., 2011, 4, 466 DOI: 10.1039/C0EE00309C

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements