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Vol.4 , No. 4, Publication Date: Jun. 7, 2018, Page: 58-67
 have been investigated. In order to investigate the optical properties, a simulation program was developed. Famous computing language “MATLAB” was chosen as the coding language because of its high ability to generate ideal graph. The optical properties (refractive index, transmittance, extinction coefficient, absorption coefficient etc.) were studied as a function of wavelength in the range from 330nm to 1110nm. The refractive indices, extinction coefficients, absorption coefficients, dielectric constants were also studied. The transmittance spectra of ZnO thin films deposited on various substrates were investigated for different thicknesses (150nm, 400nm, 800nm) of the ZnO films. The effects of interference on transmission spectra were also investigated. Fused silica and BaF<sub>2</sub> are the best substrates for the deposition of the ZnO thin film and give good reason for its applications in opto-electronic devices.&picture=http://www.aascit.org/aascit/decorators/img/journal/891.jpg)
| [1] | Sangita Das, Department of Physics, Comilla University, Kotbari, Comilla, Bangladesh. |
| [2] | Sujan Kumar Das, Department of Physics, Jahangirnagar University, Savar, Dhaka, Bangladesh. |
| [3] | Shyamal Ranjan Chakraborty, Department of Physics, University of Chittagong, Chittagong, Bangladesh. |
| [4] | Arun Kumar Deb, Department of Physics, University of Chittagong, Chittagong, Bangladesh. |
ZnO is an important II-VI semiconductor material for devices with possible applications such as piezo-electric transducers, spin functional devices, gas sensors, transparent electronics in solar cell, UV light emitters, surface acoustic waves and smart windows. In this study, the optical properties of ZnO thin films deposited on various substrates (quartz, sapphire, KDP, fused silica, BK7 glass, BaF2, GeO2 and diamond) have been investigated. In order to investigate the optical properties, a simulation program was developed. Famous computing language “MATLAB” was chosen as the coding language because of its high ability to generate ideal graph. The optical properties (refractive index, transmittance, extinction coefficient, absorption coefficient etc.) were studied as a function of wavelength in the range from 330nm to 1110nm. The refractive indices, extinction coefficients, absorption coefficients, dielectric constants were also studied. The transmittance spectra of ZnO thin films deposited on various substrates were investigated for different thicknesses (150nm, 400nm, 800nm) of the ZnO films. The effects of interference on transmission spectra were also investigated. Fused silica and BaF2 are the best substrates for the deposition of the ZnO thin film and give good reason for its applications in opto-electronic devices.
Keywords
Optoelectronics, Thin Film, ZnO, Simulation, Matlab
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