Chem. J. Chinese Universities ›› 2014, Vol. 35 ›› Issue (1): 127.doi: 10.7503/cjcu20130425

• Physical Chemistry • Previous Articles     Next Articles

Photoelectrochemistry of Core-shell Nanostructure of Ordered ZnO Nanotube Array and Cu2O Nanocrystals and Performance of the All Oxide Solid State Nanostructure Solar Cell

HAO Yanzhong*(), SUN Bao, LUO Chong, FAN Longxue, PEI Juan, LI Yingpin   

  1. College of Sciences, Hebei University of Science and Technology, Shijiazhuang 050018, China
  • Received:2013-05-07 Online:2014-01-10 Published:2013-09-17
  • Contact: HAO Yanzhong E-mail:yzhao@hebust.edu.cn
  • Supported by:
    † Supported by the National Natural Science Foundation of China(Nos.21173065, 20573031) and the Natural Science Foundation of Hebei Province of China(No.B2010000856)

Abstract:

Highly ordered ZnO nanotube arrays were prepared on the indium-tin oxide(ITO) glass substrate by a electrochemical method. Sequently, Cu2O nanocrystals were electrodeposited onto the walls of the ZnO nanotube arrays to form the designed Cu2O/ZnO 1D core-shell nanostructure. Cu2O shell of different thickness was obtained by controlling the deposition coulomb of the Cu2O nanocrystals. Scanning electron microscopy(SEM), transmission electron microscopy(TEM) and X-ray diffraction(XRD) were used to characterize the samples to confirm the formation of the designed nanostructures. A solid state solar cell with the designed Cu2O/ZnO nanostructure as photoelectrode was fabricated. The effects of the Cu2O shell thickness on the absorption and photoelectrochemical properties of the photoeletrode, as well as the photovoltaic performance of the designed solar cell, were investigated. The Au film thickness of the opposite electrode was also optimized. An energy conversion efficiency of 0.013% was obtained with the solar cell based on the photoelectrode of Cu2O(1.5 C)/ZnO and the opposite electrode of Au(20—25 min, 4 mA)/Cu.

Key words: ZnO nanotube array, Cu2O nanocrystal, Core-shell structure, All oxide solid state nanostructure solar cell

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