INTERNATIONAL JOURNAL OF ENGINEERING, SCIENCE AND - Volume 6, Issue 7, November 2017

Pages: 417-423
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Phase Transformation from In₂S₃ to CuInS₂ using Ultrasonic Spray Pyrolysis

Author: P. P. Atrea, Akshay N. Vyasb, S. D. Sartaleb and B. N. Pawar a*

Category: Engineering, Science and Mathematics

Abstract:

In this work systematic conversion of In₂S₃ into CuInS₂ was studied using ultrasonic spray pyrolysis (USP) system. The ternary compound group of I-III-VI is important for solar cell because In₂S₃ acts as a buffer layer, while CuInS₂ acts as an absorber layer in solar cell. CuInS₂ thin films were synthesized by adding certain amounts of copper salt in the solution containing 0.06 M indium chloride and 0.36 M thiourea. In the absence of copper, the above solution forms In₂S₃. The copper salt added solution was ultrasonically sprayed on a glass substrate kept at 350 ^oC. For synthesis of n-type and p-type CuInS₂, copper chloride with concentrations of 0.04 M and 0.06 M was added, respectively, in the solution containing indium chloride and thiourea. These films were characterized by X-ray diffraction (XRD), Raman spectroscopy, UV-Vis spectrophotometer, Hall effect measurement, etc.

Keywords: In2S3, CuInS2, Ultrasonic spray pyrolysis, Phase transformation