Modified-DBR-based semi-omnidirectional multilayer anti-reflection coating for tandem solar cells

doi:10.1088/1674-1056/23/2/028803

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.

Keywords: antireflection coating distributed bragg reflector solar cell

Received: 17 March 2013
Revised: 04 May 2013
Accepted manuscript online:

PACS:	88.40.jm	(Thin film III-V and II-VI based solar cells)
	88.40.hj	(Efficiency and performance of solar cells)
	88.40.jp	(Multijunction solar cells)
	84.60.Jt	(Photoelectric conversion)

Corresponding Authors: Ali Bahrami
E-mail: abahrami@iust.ac.ir

About author: 88.40.jm; 88.40.hj; 88.40.jp; 84.60.Jt

Cite this article:

Ali Bahrami, Shahram Mohammadnejad, Nima Jouyandeh Abkenar Modified-DBR-based semi-omnidirectional multilayer anti-reflection coating for tandem solar cells 2014 Chin. Phys. B 23 028803

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Modified-DBR-based semi-omnidirectional multilayer anti-reflection coating for tandem solar cells

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