View Item 

Optimization of nano-grating structure to reduce the reflection losses in gaas solar cells

Access Status
Open access
Authors
Das, Narottam
Islam, Syed
Date
2012
Type
Conference Paper

Metadata
Show full item record
Citation
Das, N. and Islam, S. 2012. Optimization of nano-grating structure to reduce the reflection losses in gaas solar cells, in 22nd Australasian Universities Power Engineering Conference 2012 (AUPEC), Sep 26-29 2012. Bali, Indonesia: IEEE.
Source Title
Proceedings of the Australasian Universities Power Engineering Conference 2012
Source Conference
22nd Australasian Universities Power Engineering Conference 2012 (AUPEC2012)
Additional URLs
ISBN
School
Department of Electrical and Computer Engineering
Remarks

Copyright © 2012 IEEE. Personal use of this material is permitted. Permission from IEEEmust be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

URI
Collection
Abstract

In this paper, finite-difference time domain (FDTD) method is used to simulate the reflection losses of subwavelength grating (SWG) structure in GaAs solar cells. The SWG structures make an excellent alternative antireflective (AR) coating due to its capacity to reduce the reflection losses in GaAs solar cells. The SWG structures allow the gradual change in refractive index that confirm excellent AR and light trapping properties, when compare with planar thin film structures. The nanorod (nano-grating) structure acts as a single layer AR coating, whereas the triangular (conical or perfect cone) and parabolic (or truncated cone) shaped grating structures act as a multilayer AR coating. Simulation results show that the reflection loss of triangular (conical or perfect cone) shaped nano-grating structure having a 300 nm grating height and a 830 nm period is ~2%, which is about 28% less than that of flat type substrates.