Impact Analysis of Metallization Design and Recombination Losses on Performance of Crystalline Silicon Solar Cells
Author:
Amin Nowshad1ORCID, Santhiran Sathiswary1, Kassim Nabilah Mat1ORCID, Alkahtani Ammar Ahmed1ORCID, Islam Mohammad Aminul2ORCID, Mohd Yusof Mohd Yusrizal3
Affiliation:
1. Institute of Sustainable Energy (ISE), Universiti Tenaga Nasional (@UNITEN, The National Energy University), Kajang 43000, Selangor, Malaysia 2. Department of Electrical Engineering, Faculty of Engineering, Universiti Malaya, Jalan University, Kuala Lumpur 50603, Selangor, Malaysia 3. TNB Renewables Sdn. Bhd. (TRe), 16A Persiaran Barat, Petaling Jaya 46050, Selangor, Malaysia
Abstract
Using Griddler software, this study aims to select the optimal metallization design by analyzing the impact of the number and sizes of busbars and fingers on a solar cell’s performance. There is interest in the PV industry to reduce the finger size toward 25 μm in upcoming years. It is shown that an increase in the number and size of busbars and fingers causes an increase in the fill factor; however, with regards to the cell’s efficiency, the shading factor should be considered in addition to the size and number of metal contacts. The results of this study indicate that solar cells’ efficiency could be increased by 0.33–0.84% when using five busbars and a finger width of 35 μm. Moreover, this increase is achieved by reducing the emitter resistance to less than 60 ohm/sq and considering a recombination rate of about 165 fA/cm2.
Funder
Universiti Tenaga Nasional (@UNITEN, The Energy University) through TNB Seeding Grant
Subject
Energy (miscellaneous),Energy Engineering and Power Technology,Renewable Energy, Sustainability and the Environment,Electrical and Electronic Engineering,Control and Optimization,Engineering (miscellaneous),Building and Construction
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