Optical and Electrical Properties of Pbs Thin Films Grown by Chemically Bath Deposition [CBD] at Different Lead Concentrations
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Date
2014-05
Authors
John, Okumu
Walter, N.
Njoroge
Mosiori, Cliff Orori
Journal Title
Journal ISSN
Volume Title
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Abstract
Lead sulphide [PbS] thin films were deposited on glass slide substrates using the chemical bath
deposition [CBD] technique at room temperature for 120 minutes. Optical properties of the thin films were
measured by spectrophotometer and then other optical and solid state properties were determined by
simulating transmittance data in the wavelength range of 260–2000 nm using a software. The software
made use of three optical models of simulation; the OJL model, the Drude model and the Kronig Kramer
Relation [KKR] modelfor analysis. Complex dielectric function [ε], band gap [Eg], refractive index [n],
absorbance [A], extinction [k] and absorption coefficients [α] were examined as a function of wavelength
and photonenergy. Further analysis refilled that PbS thin films had a band gap of 0.88eV, optical
transmittance below 55% in the near infrared range and high absorbance in the visible range of the
spectrum suitable for solar cell
Description
Journal article
Keywords
wavelength Band gap, Sulphide, Chemical Bath Deposition process, Optical and electrical properties
Citation
International Journal of Advanced Research in Physical Science (IJARPS) Volume 1, Issue 1, May 2014, PP 25-32