Acta Phys. -Chim. Sin. ›› 1995, Vol. 11 ›› Issue (01): 51-55.doi: 10.3866/PKU.WHXB19950110

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Origin of Photoresponse Transition of Copper Electrode from p-Type to n-Type

Zhou Guo-Ding, Modestov A D, Pan Chuan-Zhi, Yang Mai-Zhi, Cai Sheng-Min   

  1. Electrochemical Research Group,Shanghai Institute of Electric Power,Shanghai 200090|Chemistry Department,Peking University,Beijing 100871
  • Received:1993-11-22 Revised:1994-05-03 Published:1995-01-15
  • Contact: Zhou Guo-Ding

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Abstract:

Electrochemical and photoelectrochemical behavior for copper electrode in borax buffer solutions in the absence or in the presence of chloride ions were studied by potentiodynamic scan and photocurrent action spectrum. The photoresponse for Cu electrode in the absence of chloride ions shows p-type and the photoresponse transition from p-type to n-type in the presence of chloride ions is attributed to Cu2O film doped by Cl-ions, not to the formation of CuCl.

Key words: Copper electrode, Photoresponse, Photoresponse transition