Effects of post-deposition treatments on the photoactivity of CuInSe2 thin films deposited by the induced co-deposition mechanism
- 14 November 2000
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of Materials Chemistry
- Vol. 11 (2) , 668-672
- https://doi.org/10.1039/b003520n
Abstract
CuInSe2 thin films were electrodeposited potentiostatically from acidic aqueous solutions containing CuCl, InCl3 and SeO2. SCN− ions were used as complexing agents for Cu+ ions in order to shift their reduction potentials in the negative direction. Different deposition solutions and post-deposition treatments were compared. The films were characterized by means of energy dispersive X-ray spectrometry, scanning electron microscopy, X-ray diffraction, time-of-flight elastic recoil detection analysis, electrochemical quartz crystal microbalance, cyclic photovoltammetry and photoelectrochemical measurements. The as-deposited films were found to be p-type. The photoactivity was lost after heat treatment, but etching in 0.5 M KCN regenerated it rapidly.Keywords
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