Photoresponse enhancing in nanostructured WO3 films by slight change in heating ambient

被引：5
作者：
Naseri, Naimeh [1 ]
机构：
[1] Sharif Univ Technol, Dept Phys, Tehran 111559161, Iran
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2017年 / 693卷
关键词：
WO3; photoanode; Annealing; Surface roughness; Donor density; THIN-FILMS; WATER OXIDATION; H-2; PRODUCTION; PHOTOANODES;
D O I：
10.1016/j.jallcom.2016.09.275
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Providing solar hydrogen as a clean energy resource is one of the human challenges for future. Controlling oxygen vacancies as well as surface morphology in metal oxide semiconductors enables developing PEC H-2 production in some understood ways. Here, the influence of simple change in annealing atmosphere, air and pure oxygen, on photoresponse of nanocrystalline WO3 has been studied completely. Results revealed that such slight change in annealing procedure increases effective surface interface and donor density by 77 and 72%, respectively. These effects and also retarding recombination of photo-generated electro-hole pair resulted in photocurrent enhancement under solar like illumination more than three times. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：871 / 875
页数：5
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