Effect of annealing temperature on photovoltaic properties of spin coated CdS films

TL;DR

This study investigates how annealing temperature affects the photovoltaic properties of spin-coated CdS thin films, focusing on their structural, optical, and electrical characteristics for solar cell applications.

Contribution

It provides new insights into the relationship between annealing temperature and photovoltaic performance of CdS films prepared by spin coating.

Findings

Photovoltaic properties vary significantly with annealing temperature.

Optimal annealing conditions improve photocurrent and voltage.

Structural and optical properties are correlated with photovoltaic performance.

Abstract

CdS thin film samples were fabricated using spin coating technique on normal glass and conductive glass substrates and annealed at different temperatures. According to the XRD patterns of films prepared on normal glass substrates, polycrystalline films are consist of single phase of CdS. Films synthesized on conductive glass substrates were employed for photovoltaic measurements. Variation of photovoltaic properties with annealing temperature was investigated. The liquid junction photocell was measured in the electrolyte of Na2S2O3/I2. Then, the short circuit photo current and open circuit photo voltage were measured at room temperature under illumination and under dark using a solar cell simulation system. Optical band gap of CdS film samples was determined by measuring UV-visible spectroscopy.