• RUPKAMAL CHETIA

Articles written in Bulletin of Materials Science

• Role of concentration on Cd$_x$Pb$_{1–x}$S thin films: synthesis, characterization and photovoltaic cells properties

The Cd$_x$Pb$_{1–x}$S thin films with different concentrations of x from 0.2 to 0.8 were synthesized using the chemical bath deposition method. X-ray diffraction (XRD) and Williamson–Hall (W–H) plot gives the crystallite size that decreases with increased concentration. XRD, high-resolution transmission electron microscopy and selected area electron diffraction patterns of the film samples evidence the hexagonal phase structures of both CdS and PbS. Energy-dispersive X-ray confirmed the presence of Cd, Pb and S in the film samples. The transmittance of the film samples increases with the increase in concentration. Optical studies show the prominent blue shift in bandgap energy, whereas the Urbach energy decreases with the increased concentration x. The electrical conductivity of the films at room temperature is of the order of 10$^{–5}$ (${\Omega}$cm)$^{-1}$. The efficiency of the heterojunction cell structures Cd$_x$Pb$_{1–x}$S/CdTe and Cd$_x$Pb$_{1–x}$S/CdSe are calculated to be 3.37 and 2.21%, respectively.

• # Bulletin of Materials Science

Volume 46, 2023
All articles
Continuous Article Publishing mode

• # Dr Shanti Swarup Bhatnagar for Science and Technology

Posted on October 12, 2020

Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
Chemical Sciences 2020