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Nano-structured photovoltaic cell design for high conversion efficiency by optimizing various parameters

conference contribution
posted on 02.06.2020, 00:00 authored by N Shelat, Narottam DasNarottam Das, Mohammad KhanMohammad Khan, S Islam
This paper investigates the effect of different types of nano-grating structures embossed on top of the substrate of solar photovoltaic (PV) cell for high conversion efficiency. The simulation results for light reflection are obtained by using Optiwave finite difference time-domain (Opti-FDTD) software. These nano-grating structures have different shapes, such as triangular, trapezoidal, pillar and parabolic. These nano-grating profiles work as a multilayer anti-reflective coating for GaAs solar cells and reduce the light reflection from the surface of the panel and increase the light trapping capacity inside the solar cell. These structures allow the gradual change in refractive index and provide a high transmission and less reflection of light that confirms excellent anti-reflective coating and increased light trapping capacity inside the cell substrate. For this simulation, different periodic shaped arrangements were made to obtain the higher conversion efficiency, the factors considered while develop the design are the aspect ratio (AR), thickness of the nano-grating structure and duty cycles. The simulation result shows that the light reflection loss in pillar shaped nano-grating structures having 150 nm of height and a 50% period (i.e., duty cycle) is ~0.5% only, which is the lowest reflection loss obtained, when compared with the triangular and trapezoidal shaped nano-grating structures, it is approximately 38% more efficient in trapping the incident light.

History

Start Page

1

End Page

6

Number of Pages

6

Start Date

26/11/2019

Finish Date

29/11/2019

eISSN

2474-1507

ISSN

2474-1493

ISBN-13

9781728150444

Location

Nadi, Fiji

Publisher

IEEE

Place of Publication

Online

Peer Reviewed

Yes

Open Access

No

External Author Affiliations

Federation University

Author Research Institute

Centre for Intelligent Systems

Era Eligible

Yes

Name of Conference

29th Australasian Universities Power Engineering Conference (AUPEC 2019)