Facile preparation and photoelectrochemical properties of CdSe/TiO₂ NTAs

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• 作者：Jiayong Gan^a ; ^{ganjy@student.sysu.edu.cn} ; Teng Zhai^a ; Xihong Lu^a ; ^b ; Shilei Xie^a ; Yanchao Mao^a ; Yexiang Tong^a ; ^{chedhx@mail.sysu.edu.cn}
• 关键词：D. Optical properties ; Electronic materials ; Nanostructures ; Semiconductors
• 刊名：Materials Research Bulletin
• 出版年：2012
• 期刊代码：60_00255408
• 类别：ms
• 出版时间：March, 2012
• 卷：47
• 期：3
• 页码：580-585
• 文件大小：1067 K

摘要

In the present work we report the design and synthesis of CdSe/TiO₂ nanotube arrays (NTAs) and their implementation as a photoanode for photoelectrochemical (PEC) application. CdSe nanoparticles with well dispersion were decorated on the inner and outer surfaces of 2.5 渭m-long TiO₂ nanotubes via electrodeposition. These CdSe/TiO₂ NTAs exhibit a significant photocurrent responds under visible light illumination (位 鈮?#xA0;420 nm). The results presented in this study display a promising method that the photoelectrochemical performance could be improved via composition, size and crystalline control of CdSe/TiO₂ NTAs. And the tubular morphology is also able to facilitate charge transport in nanostructure-based PEC cells. This research demonstrates a new approach, which have great potential applications in fabricating novel heterostructure-photoelectrochemical devices.