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<p>A Cu<sub>2</sub>O layer was formed on a SnO<sub>2</sub> substrate by electrochemical deposition from an alkaline citrate electrolyte. This layer was then treated with hydroiodic acid solution to form a film consisting of γ-CuI crystals with size of 70-90 nm. It is shown that CuI in the film behaves a <i>p</i>-type semiconductor, which photosensitive in the 300-420 nm range and exhibits a maximum photocurrent at potential <i>E</i> = –0.33 V vs. silver chloride electrode. The developed method for forming CuI films can be used to determine concentration of copper ions in the initial electrolyte</p>

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Two-Stage Formation of Photosensitive Semiconductive CuI Films on SnO2 Substrate

  • 期刊论文

  • 发表日期：

    2026年7月8日

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  • S. S. Fomanyuk,
  • V. O. Smilyk,
  • I. A. Rusetsky,
  • M. O. Danilov,
  • G. Ya. Kolbasov

摘要

A Cu2O layer was formed on a SnO2 substrate by electrochemical deposition from an alkaline citrate electrolyte. This layer was then treated with hydroiodic acid solution to form a film consisting of γ-CuI crystals with size of 70-90 nm. It is shown that CuI in the film behaves a p-type semiconductor, which photosensitive in the 300-420 nm range and exhibits a maximum photocurrent at potential E = –0.33 V vs. silver chloride electrode. The developed method for forming CuI films can be used to determine concentration of copper ions in the initial electrolyte