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Role of concentration on Cd$_x$Pb$_{1–x}$S thin films: synthesis, characterization and photovoltaic cells properties
LIPIKA GOGOI JITUPON GOGOI RUPKAMAL CHETIA MINAKSHI CHAMUA SURAJIT KONWER PRASANTA KUMAR SAIKIA
Volume 45 Published: 2 November 2022 Article ID 0220
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https://www.ias.ac.in/article/fulltext/boms/045/0220 -
Keywords
Cd$_x$Pb$_{1–x}$S ;XRD ;HRTEM ;Urbach energy ;electrical conductivity ;photovoltaic cell. -
Abstract
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.
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Author Affiliations
LIPIKA GOGOI1 JITUPON GOGOI2 RUPKAMAL CHETIA2 MINAKSHI CHAMUA3 SURAJIT KONWER2 PRASANTA KUMAR SAIKIA1
- Department of Physics, Dibrugarh University, Dibrugarh 786004, India
- Department of Chemistry, Dibrugarh University, Dibrugarh 786004, India
- Department of Physics, Tinsukia College, Tinsukia 786125, India
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Dates
- Published
- 2 November 2022
- Manuscript received
- 19 April 2022
- Accepted
- 10 July 2022
- Final version published online
- 2 November 2022
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Volume 46, 2023
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