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应用科学学报 ›› 1990, Vol. 8 ›› Issue (3): 247-251.

• 论文 • 上一篇    下一篇

FeCl3对单晶n-CdTe光电极的修饰作用

范钦柏, 杨军, 邓薰南   

  1. 上海科学技术大学
  • 收稿日期:1988-07-04 修回日期:1988-12-24 出版日期:1990-09-30 发布日期:1990-09-30

THE MODIFICATION OF n-CdTe PHOTOELECTRODE USING FeCl3 SOLUTION

FAN QINBAI, YANG JUN, DENG XUNNAN   

  1. Shanghai University of Science and Technology
  • Received:1988-07-04 Revised:1988-12-24 Online:1990-09-30 Published:1990-09-30

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摘要： 运用FeCl3修饰单晶n-CdTe光电极,使电池效率提高到14.3%.借助X射线光电子能谱和俄歇电子能谱对电极表面组成与结构变化进行了检测.测量了光谱响应曲线,电容电压曲线,以及交流阻抗谱,对被修饰电极的光电化学与电化学性能进行了考查,观察到在电极/溶液界面有费米能级"钉扎"现象.此外,对FeCl3的修饰作用作了初步的解释.

Abstract: The photoelectric conversion efficiency is enhanced about 20% by using FeCl3 solution to modify the n-CdTe photoanode. By the aid of X-ray photoelectron spectroscopy and Auger electron spectroscopy,the variations of chemical compositions and surface structures after FeCl3 modification are detected. The photoelectrochemical and electrochemical behaviors of the modified electrodes are examined by the spectral response, capacitance-potential, and electrochemical impedance measurements. The Fermi level pinning at the n-CdTe/solution interface is observed. Furthermore, a preliminary explanation for the modification action of FeCl3 is given.