Optimization of front metal contact design of Industrial Si solar cells using photoluminescence imaging technique

Silver (Ag) based front contact metallisation is a crucial process step in industrial Si solar cell fabrication. Lesser front metal coverage leads to high resistive losses, whereas higher coverage results in shadowing loss as well as increased metal-induced recombination losses. Both scenarios imped...

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Bibliographic Details
Main Authors: Behera, Siddharth, KP, Sreejith, Khan, Almouzzam, Kumbhar, Sandeep, Kottantharayil, Anil, Basu, Prabir K., Kumar Sharma, Ashok
Format: Conference Proceeding
Language:English
Subjects:
Biased photoluminescence
Industrial Si solar cells
Metal-induced recombination
Series resistance
Silver metal contact
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Summary:Silver (Ag) based front contact metallisation is a crucial process step in industrial Si solar cell fabrication. Lesser front metal coverage leads to high resistive losses, whereas higher coverage results in shadowing loss as well as increased metal-induced recombination losses. Both scenarios impede the power conversion efficiency of solar cells. Therefore, it is essential to monitor the shadow, resistive, and metal-induced recombination losses associated with the design of front Ag contact. In this work, we demonstrate the application of photoluminescence (PL) imaging technique in association with the other conventional characterization techniques used in the optimization of front contact metallisation.
ISSN:2214-7853
2214-7853
DOI:10.1016/j.matpr.2020.08.368