Akın, Ü.Çelik, İlhamiAvcı, ÇağrıTuğluoğlu, NihatYüksel, Ömer Faruk2020-03-262020-03-262019Akın, Ü., Çelik, İ., Avcı, Ç., Tuğluoğlu, N., Yüksel, Ö. F. (2019). Some Optical Properties of Melanin Thick Film. Materials Today: Proceedings, 18, 1972-1977.2214-7853https://doi.org/10.1016/j.matpr.2019.06.688https://hdl.handle.net/20.500.12395/38204International Congress on Semiconductor Materials and Devices (ICSMD) -- AUG 17-19, 2017 -- Selcuk Univ, Konya, TURKEYThe melanin obtained from brown-black sheep wool was prepared in the form of thick film by using drop casting method on the soda-lime glass substrate. The optical properties of the melanin thick film have been investigated by means of the optical measurements. It was observed that the thick film showed high transmittance value nearly up to 84 % in the IR spectral region and it showed very high absorbance in both UV and visible regions. From standard optical analysis, it was observed that melanin thick film had the properties of the semiconductors with indirect band gap, and the band gap energy value was found as 1.24 eV. Also, it was seen that calculated refractive index of the melanin thick film varies between 1.37 and 1.63 throughout the spectral region considered. (C) 2019 Elsevier Ltd. All rights reserved.eninfo:eu-repo/semantics/openAccessMelanin Thick FilmOptical PropertiesConference Object1819721977WOS:000495858400024N/A