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Study of Highly Increased Photonic Band Gaps Extension in One Dimensional Metallo-Organic Multilayer Photonic Structure
Current Issue
Volume 1, 2013
Issue 1 (December)
Pages: 13-25   |   Vol. 1, No. 1, December 2013   |   Follow on         
Paper in PDF Downloads: 11   Since Aug. 28, 2015 Views: 1853   Since Aug. 28, 2015
Authors
[1]
Sanjay Srivastava, Department of Materials Science and Metallurgical Engineering, Maulana Azad National Institute of Technology, India.
Abstract
In this paper, we show theoretically that the reflectance spectra of one dimensional multilayer metal-organic periodic structure (1D MOPS) can be enhanced due to the addition of the organic constituents. We have used simple transfer matrix method to calculate the absorption, transmittance and reflectance of the 1D MOPS systems. The organic component like N,N’-bis-(1-naphthyl)-N,N’diphenyl-1; 1biphenyl-4; 4diamine (NPB) absorbs the light in ultra-violet, visible and infrared electromagnetic region and the structure with Ag-metal also having the tendency to absorb the light by the plasmaonic action and their refractive can be calculated from Drude equation. The reflectance spectra of multilayer 1D MOPS containing a variable number periodic of Ag/N,N’-bis-(1-naphthyl)-N,N’diphenyl-1; 1biphenyl-4; 4diamine (NPB) structure are calculated taking optical constant of NPB and Ag. The optical band gap and reflectance spectra of 1D MOPS of the considered structure is obtained in the visible and near infrared regions either with the variation of the metal layer thickness or thickness of the organic layer. From the results under investigation through TMM, tunability in the optical band gap was observed either change in thickness of the other layer 1/ or 2 or the angle of the incident. Due to optical absorption of the light in the different region of electromagnetic spectrum due to either N,N’-bis-(1-naphthyl)-N,N’diphenyl-1; 1biphenyl-4; 4diamine (NPB) or silver metal, the optical band gap of 1DMOPS shows the shift of band edges of λL and λR from ultra-violet to visible and the infrared with change the optical constant.
Keywords
Photonic Crystals, Dielectric and Organic Layer, TE and TM-Mode
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