SYNTHESIS OF IODINE DOPED n-BMA THIN FILMS VIA PLASMA POLYMERIZATION TECHNIQUE: EFFECT ON OPTICAL PROPERTIES

Rahima Nasrin (), Humayun Kabir and A. H. Bhuiyan
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Rahima Nasrin: Department of Physics, University of Barisal, Barisal-8200, Bangladesh
Humayun Kabir: #x2020;Department of Physics, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh
A. H. Bhuiyan: #x2021;Department of Physics, Bangladesh University of Engineering and Technology (BUET) Ramna, Dhaka 1000, Bangladesh

Surface Review and Letters (SRL), 2020, vol. 27, issue 04, 1-6

Abstract: In order to understand the variation of surface morphology and optical properties due to modification, an attempt has been made to synthesize iodine-doped n-butyl methacrylate thin films through plasma polymerization technique. Field emission scanning electron microscope images displayed that the surface of the modified plasma polymerized n-butyl methacrylate (PPnBMA) thin films became smooth after iodine doping. Atomic force microscopic analysis reveals that with increasing doping time from 0min to 60min the surface root-mean-square roughness value is decreased from 0.68nm to 0.51nm, which suggests that roughness of the PPnBMA thin film surface quite improved due to iodine doping. UV-Vis absorption spectroscopic analyses exhibited that iodine doping noticeably decreased both the direct and indirect energy bandgap values of PPnBMA thin film. The effect of doping by iodine on absorption coefficient, extinction coefficient, etc. of these thin films have been also discussed.

Keywords: Iodine doping; thin film; organic polymer; n-BMA (search for similar items in EconPapers)
Date: 2020
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DOI: 10.1142/S0218625X19501336

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