Modified-DBR-based semi-omnidirectional multilayer anti-reflection coating for tandem solar cells |
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Authors: | Ali Bahrami Shahram Mohammadnejad Nima Jouyandeh Abkenar |
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Affiliation: | Nanoptronics Research Center, Department of Electrical and Electronics Engineering, Iran University of Science and Technology, Tehran 16846-13114, Iran |
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Abstract: | In this paper,multilayer antireflection coatings are designed by modifying the thickness of two and three paired layer distributed Bragg reflector(DBR)structure.Our proposed DBR-based structures show antireflection behaviors,in spite of the reflection treatment in traditional DBR structures.Firstly,the proposed structures are designed to be equivalent to the theoretical ideal triple-layer(TL)antireflection coating(ARC).Therefore,the problem of finding a suitable material for the middle layer of triple structure is solved.Simulation results show the significant equivalency for the reflectance of proposed structures to the ideal TL ARC at the same wavelengths and incident angles.Also,the design of the structure is changed in order to present the constant reflectance coefficient over a wide range of wavelengths.This structure enhances the omni-directionality of the multilayer ARC. |
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Keywords: | antireflection coating distributed bragg reflector solar cell |
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