Nano-structured GaAs Solar Cell Design, Simulation and Analysis for Conversion Efficiency Improvement

Tan, Shiyao and Das, Narottam and Helwig, Andreas and Islam, Syed (2018) Nano-structured GaAs Solar Cell Design, Simulation and Analysis for Conversion Efficiency Improvement. In: 2018 Australasian Universities Power Engineering Conference (AUPEC 2018), 27-30 Nov, 2018, Auckland, New Zealand.


Abstract

This paper discusses nano-structured GaAs solar cell design and analysis for conversion efficiency improvement by increasing the light transmission and absorption, reducing the light reflection. The focus of this research is to construct different type of nano-grating shaped GaAs solar cells with various nano-grating heights and pitches, to compare the simulation results and find a suitable nano-structure that can provide higher conversion efficiency. Finite difference time domain (FDTD) simulation tool is used to simulate and calculate the light reflection, transmission and absorption for different nano-grating shapes, such as, parabolic, triangular, trapezoidal and rectangular. Based on the simulation results, it has been confirmed that the light reflection of parabolic shaped nano-grating structures is higher than triangular nano-grating structures, but it is lower than rectangular and trapezoidal shaped nano-grating structures. Moreover, the simulation results confirmed that the light transmission of parabolic shaped nano-grating structures is about 62.3% having a 200-nm grating height and an 810-nm grating pitch, which is about 22% higher than the rectangular (i.e., flat) type substrates.


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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Faculty/School / Institute/Centre: Current - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering (1 Jul 2013 -)
Faculty/School / Institute/Centre: Current - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering (1 Jul 2013 -)
Date Deposited: 12 Aug 2020 05:02
Last Modified: 30 Sep 2020 22:30
Uncontrolled Keywords: Conversion efficiency; Finite-difference time-domain method; GaAs solar cells; Light reflection;transmission;and absorption; Nano-grating structure; Solar or renewable energy
Fields of Research (2008): 09 Engineering > 0906 Electrical and Electronic Engineering > 090608 Renewable Power and Energy Systems Engineering (excl. Solar Cells)
Fields of Research (2020): 40 ENGINEERING > 4008 Electrical engineering > 400803 Electrical energy generation (incl. renewables, excl. photovoltaics)
Socio-Economic Objectives (2008): B Economic Development > 85 Energy > 8505 Renewable Energy > 850504 Solar-Photovoltaic Energy
B Economic Development > 85 Energy > 8598 Environmentally Sustainable Energy Activities > 859899 Environmentally Sustainable Energy Activities not elsewhere classified
Identification Number or DOI: https://doi.org/10.1109/AUPEC.2018.8757873
URI: http://eprints.usq.edu.au/id/eprint/37511

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