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In this letter, the electrical performance in terms of power conversion efficiency (PCE) of Si nanopillar (SiNP)-textured thin-film solar cell is investigated via simulation, where the SiNP physical dimensions were predetermined for optimized solar-energy absorption. Several key factors affecting PCE of the solar cell, e.g., the impact of Si quality in terms of minority carrier lifetime, emitter doping level, and emitter junction depth, is highlighted, and a practical guideline to design high-efficiency SiNP-textured thin-film solar cell is thus provided. The PCE of the structure under investigation can be significantly boosted, compared with the to-date reported Si thin-film solar cell.
Date of Publication: April 2010