Photo-assisted Electrodeposition of CdTe Semiconductor from Ammoniacal Alkaline Aqueous Solutions

Kuniaki MURASE; Hiroto WATANABE; Hidenori UCHIDA; Tetsuji HIRATO; Yasuhiro AWAKURA

doi:10.5796/electrochemistry.67.331

Communication

Photo-assisted Electrodeposition of CdTe Semiconductor from Ammoniacal Alkaline Aqueous Solutions

Kuniaki MURASE, Hiroto WATANABE, Hidenori UCHIDA, Tetsuji HIRATO, Yasuhiro AWAKURA

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Keywords: Cadmium Telluride, Compound Semiconductor, Photocatalysis, Deposition Mechanism

JOURNAL FREE ACCESS

1999 Volume 67 Issue 4 Pages 331-335

DOI https://doi.org/10.5796/electrochemistry.67.331

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Abstract

The cathodic current density for CdTe electrodeposition from ammoniacal alkaline baths (pH 10.7∼10.8) was enhanced by photo-irradiation of the cathode surface. Voltammetric analysis revealed that the photo-induced enhancement was caused by CdTe deposit on the growing surface. By this irradiation, deviation of the composition of the resulting CdTe film from stoichiometry was depressed and current efficiency increased. The photo-assisted growth was discussed in terms of the deposition mechanism.

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