Cell Efficiency Enhancement in Industrial Monocrystalline Silicon Solar Cells Using New Low-Cost Chemical Passivation Process
In this work, we report a low-cost, industrially viable chemical oxidation process (named as NCPRE-oxide process) using sodium hypochlorite (NaOCl) solution applicable to 5-inch pseudo-square monocrystalline silicon Al-BSF solar cells. Introduction of this new ultrathin oxide layer in between silicon nitride layer and silicon shows the improvement in the open circuit voltage and thereby the efficiency of solar cells.
We would like to acknowledge the efforts of R. Manoj Kumar and Binny Nair for their assistance in characterization. This work was carried out at the National Centre for Photovoltaic Research and Education (funded by the Ministry of New and Renewable Energy, Government of India) at IIT Bombay.
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