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Nano-structured photovoltaic cell design for high conversion efficiency by optimizing various parameters
conference contribution
posted on 2020-06-02, 00:00 authored by N Shelat, Narottam DasNarottam Das, Mohammad KhanMohammad Khan, S IslamThis 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
1End Page
6Number of Pages
6Start Date
2019-11-26Finish Date
2019-11-29eISSN
2474-1507ISSN
2474-1493ISBN-13
9781728150444Location
Nadi, FijiPublisher
IEEEPlace of Publication
OnlinePublisher DOI
Peer Reviewed
- Yes
Open Access
- No
External Author Affiliations
Federation UniversityAuthor Research Institute
- Centre for Intelligent Systems
Era Eligible
- Yes