Properties of CdS Thin Films Prepared by Chemical Bath Deposition as a Function of Thiourea/CdAc₂ Ratio in Solution

초록

In this paper CdS thin films, which were widely used window layer of the CdS/CdTe and the CdS/CuInSe₂ heterojunction solar cell, were grown by chemical bath deposition, which is a very attractive method for low-cost and large-area solar cells, and the structural, optical and electrical properties of the films was studied.As the thiourea/CdAc₂ mole ratio was increased, the deposition rate of CdS films prepared by CBD was increased due to increasing reaction velocity in solution and the optical bandgap was increased at higher thiourea/CdAc₂mole ratio due to larger grain size and continuous microstructure. The minimum resistivity of the films was at thiourea/CdAc₂mole ratio of 3.

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