Chemically processed CdTe thin films for potential applications in solar cells – Effect of Cu doping

• DOI: 10.1016/j.heliyon.2024.e24492
• Publication Date: 2024-01-13T02:48:45Z
• Authors: Azqa F. Butt; M. Azhar; Hassan Yousaf; K.M. Batoo; Dilbar Khan; M. Noman; Mujeeb U. Chaudhry; Shahzad Naseem; Saira Riaz
• Keywords: Cadmium telluride photovoltaics

Thin films of cadmium telluride (CdTe) have attained the attention researchers due to potential application in solar cells. However, cost-effective fabrication cells based on thin along with remarkable efficiency and control over optical properties is still a challenging task. This study presents an analysis structural, electrical undoped Cu-doped CdTe fabricated ITO coated glass substrates using electrodeposition process focus practical applications. Electrolytes (Cd), tellurium (Te) copper (Cu) are prepared low molarity 0.1 M. deposited by keeping current density range 0.12–0.3 mA/cm2. Copper doping varied (2-10 wt%) for optimized sample. X-ray diffraction crystallography indicates that both crystallize into dominant hexagonal lattice. Direct energy band gap observed doped conditions. The revealed drop ∼1.46 eV increase concentration from 2 10 wt%. Increase mobility conductivity films. Whereas, Cu 6 wt% produced acceptable samples. Furthermore, photoluminescence (PL) spectroscopy unveiled multitude emission peaks encompassing visible spectrum, arising combination electrons holes through direct indirect recombination processes. Findings this suggest chemically would be suitable use as low-cost applications pertaining