Effect of potassium chromate nanoparticles on the optical properties of poly (methyl methacrylate) (PMMA) films
In this work, the authors have presented a study on the variation in optical parameters that occur on doping Poly-methyl-metha crylate (PMMA) thin films with Potassium chromate (K2CrO4) by different weight percentages (1%,2%, 5% and 10%). These pure PMMA and its composite films are of thickness ∼100...
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Published in | Materials today : proceedings Vol. 10; pp. 38 - 45 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
Elsevier Ltd
2019
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Subjects | |
Online Access | Get full text |
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Summary: | In this work, the authors have presented a study on the variation in optical parameters that occur on doping Poly-methyl-metha crylate (PMMA) thin films with Potassium chromate (K2CrO4) by different weight percentages (1%,2%, 5% and 10%). These pure PMMA and its composite films are of thickness ∼100m and have been synthesized using the solution cast technique. The absorbance (A) and transmittance (T %) spectra of these films were recorded in the wavelength range (300-1100) nm using EI 2375 UV-VIS double beam spectrophotometer. From the obtained data, the optical parameters viz. absorption coefficient, extinction coefficient), finesse coefficient (F), refractive index (, real and imaginary parts of dielectric constant , optical conductivity and optical energy gap for indirect transition were evaluated and are found to show variation with increase of K2CrO4 concentration in the mentioned wavelength range. |
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ISSN: | 2214-7853 2214-7853 |
DOI: | 10.1016/j.matpr.2019.02.186 |