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Citation: Chen Zhiyun, Wang Zhiqi, Zhou Shaomin. INVESTIGATION OF ELECTRODEPOSITED CdSe THIN-FILM BY SURFACE PHOTOVOLTAGE SPECTROSCOPY[J]. Acta Physico-Chimica Sinica, ;1987, 3(04): 407-411. doi: 10.3866/PKU.WHXB19870414 shu

INVESTIGATION OF ELECTRODEPOSITED CdSe THIN-FILM BY SURFACE PHOTOVOLTAGE SPECTROSCOPY

1.
Institute of Physical Chemistry; Xiamen University

Received Date: 28 April 1986
Available Online: 15 August 1987

CdSe semiconductor thin-film electrodes have been prepared by means of electrodeposition. They are capable of achieving 5.9% solar energy conversion efficiency in PEC performance after being annealed at 450 ℃ in air. Surface photovoltage (SPV) has been used to study their photoelectrochemical properties. SPV spectra of the CdSe thin-films with and without annealing show that surface recombination of minority carriers is significantly reduced after annealing.
The minority carriers diffusion length L_P has been determined by extrapolating the plots ofreciprocal surface photovoltage as a function of the absorption length to zero ΔV~(-1)_(ph). It is found that L_p=0.42 μm.
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