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Efficiency of back contact-back junction solar cells with variable contact in the emitter

Abstract:

As renewable energy becomes more sustainable and more viable than it has ever been, more and more countries are turning ‘green’ and reverting to sustainable ways. We have carried out the study of a cell Back Contact - Back Junction (BC-BJ) solar cell with an alone contact in the issuer who has as efficiency of 22.027%. This work presents a simulation of BC-BJ, with variation (50Â µm, 100Â µm) and mobility of a second contact along the emitter, the inclusion of a second contact variable and being moved through the emitter presents an improvement in efficiency at a midpoint of the cell. Increasing the second contact of 50Â µm in the emitter with a position of 500Â µm has as efficiency of 22.152% in the same position with the contact of 100Â µm has as efficiency of 22.109%, On having increased the second issuer in the cell BC-BJ achieved an increase in the efficiency of 0.042% between the two contacts and between the efficiency of a single contact in the cell.