Comprehensive Analysis of Morphology, Structure, and Photovoltaic Properties of CdTe and CdTe:In Thin Films

In this work, the photovoltaic properties and short-circuit current spectra of indium (In)-doped CdTe films were comprehensively investigated. The study covers the spectral sensitivity and light-absorption characteristics of undoped, freshly prepared, and thermally treated CdTe:In films. The effects of doping level and thermal treatment temperature on photovoltaic effect parameters were analyzed. The results showed that indium doping and subsequent thermal treatment significantly improve the photovoltaic efficiency of CdTe films. Using spectroscopic and electron microscopy methods, the chemical composition, surface morphology, and bandgap width of the films were determined, and their interrelation with optical and electrical properties was revealed. The obtained results indicate that films are promising for applications in solar energy devices.

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