Chinese Journal of Applied Chemistry ›› 1988, Vol. 0 ›› Issue (5): 93-95.

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A STUDY OF THE OUTPUT CHARACTERISTICS OF PHOTO ELECTROCHEMICAL CELL(PEC)BASED ON n-GaAs

Qian Daosun, Sun Lizbong, Shen Yi   

  1. Deportment of Applied Chemistry, Shanghai Jiaotong University
  • Received:1987-10-12 Revised:1988-01-20 Published:1988-10-10 Online:1988-10-10

Abstract: In this paper the output characteristics of PEC cell based on n-GaAs are studied.The influences of light intensity,chemical etching,concentration of redox system and ion modification on the conversion efficiency of PEC cell are observed.The conversion efficiency reaches 23.9% when the light intensity is low(9.61mW.cm-2),with the electrode being repeatedly etched and modified by Ni2+ ion.The effect of pH on the flatband potential is determined.

Key words: Gallium arsenide, Photoelectrochemical cell