https://scholars.lib.ntu.edu.tw/handle/123456789/384963
標題: | Quantum-Dot-Sensitized Nitrogen-Doped ZnO for Efficient Photoelectrochemical Water Splitting | 作者: | Chen, Chih Kai Shen, Yen-Ping Chen, Hao Ming CHIH-JUNG CHEN Chan, Ting-Shan Lee, Jyh-Fu Liu, Ru-Shi RU-SHI LIU |
關鍵字: | Doping; Quantum dots; Water splitting; Zinc | 公開日期: | 2014 | 期: | 4 | 起(迄)頁: | 773-779 | 來源出版物: | European Journal of Inorganic Chemistry | 摘要: | Fossil fuels have been used for several decades and have resulted in increased greenhouse gases and pollutants. Currently, clean and renewable energy is in demand. Hydrogen appears to be a good candidate for clean energy because the only product of its reaction with oxygen is water. Water splitting by solar energy is a potential method for the generation of hydrogen in future applications. This study investigates the use of a CdTe quantum-dot-sensitized ZnO:N nanowire arrays for water splitting. The proposed method resulted in considerably enhanced photocurrent and stability. The electronic structures of the ZnO:N materials are also determined by O K-edge X-ray absorption spectroscopy. The incorporation of nitrogen into the ZnO nanostructure is determined by X-ray photoelectron spectroscopy and Zn K-edge X-ray absorption spectroscopy; the nitrogen incorporation changes the electronic state and, thus, increases the water-splitting performance. We have prepared a photoelectrode by sensitization of a ZnO:N nanowire array by CdTe quantum dots. The photoelectrode improves the harvest of visible light significantly and, thus, enhances the photoelectrochemical cell performance. Copyright © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. |
URI: | http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000336741600022&KeyUID=WOS:000336741600022 http://scholars.lib.ntu.edu.tw/handle/123456789/384963 |
DOI: | 10.1002/ejic.201301310 |
顯示於: | 化學系 |
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