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POMPI MOJUMDER
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Volume 45 All articles Published: 31 January 2022 Article ID 0027
POMPI MOJUMDER MOHAMMAD JELLUR RAHMAN MD ABU HASHAN BHUIYAN SHAMIMA CHOUDHURY
Plasma polymerized 2-vinylpyridine (PP2VP) thin films have been synthesized under glow discharge using a capacitively coupled system. In the scanning electron microscope images, surface morphology of the PP2VP thin films isobserved to be very smooth and crack free. Fourier transform infrared spectra of the thin films clearly indicate that structural change occurs during the polymerization process. The information about the electronic structure and theexistence of both direct and indirect optical transitions in the PP2VP thin films have been ascertained by the ultraviolet– visible spectroscopic studies. The bandgaps for the allowed indirect and direct transitions of the as-deposited PP2VP thin films are obtained as 1.82 ± 0.10 and 3.30 ± 0.03 eV, respectively. To understand the optical response of the PP2VP thin films elaborately, different optical parameters, such as extinction coefficient, Urbach energy, refractive index, steepness parameter, optical conductivity, etc., are estimated.
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Bulletin of Materials Science
Volume 46, 2023
All articles
Continuous Article Publishing mode
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Dr Shanti Swarup Bhatnagar for Science and Technology
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Posted on July 25, 2019Click here for Editorial Note on CAP Mode
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