Light trapping in thin-film silicon solar cells with photonic structures

摘要: Efficient photovoltaic conversion of solar energy requires optimization both light absorption and carrier collection. This manuscript reviews theoretical studies thin-film silicon cells with various kinds ordered disordered photonic structures. Light trapping capabilities these systems are analyzed by means rigorous coupled-wave analysis compared the so-called Lambertian limit as given a fully randomizing scatterer. The best structures found to require proper combinations order disorder, can be fabricated starting from pre-patterned rough substrates. Carrier collection is studied analytic models full electro-optical simulations. results indicate that outperform bulk ones comparable material quality, provided surface recombination kept below critical level, which compatible present-day passivation technologies.