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

被引：0
|
作者：
Andreani, Lucio Claudio [1 ]
Bozzola, Angelo [1 ]
Kowalczewski, Piotr [1 ]
Liscidini, Marco [1 ]
机构：
[1] Univ Pavia, Dept Phys, Via Bassi 6, I-27100 Pavia, Italy
来源：
PHOTONIC CRYSTAL MATERIALS AND DEVICES XI | 2014年 / 9127卷
关键词：
Thin-film solar cells; light trapping; Lambertian limit; photonic structures; order and disorder; carrier collection; electro-optical simulations; surface recombination; ROUGH; OPTIMIZATION;
D O I：
10.1117/12.2054521
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Efficient photovoltaic conversion of solar energy requires optimization of both light absorption and carrier collection. This manuscript reviews theoretical studies of thin-film silicon solar cells with various kinds of ordered and disordered photonic structures. Light trapping capabilities of these systems are analyzed by means of rigorous coupled-wave analysis and compared with the so-called Lambertian limit as given by a fully randomizing light scatterer. The best photonic structures are found to require proper combinations of order and disorder, and can be fabricated starting from pre-patterned rough substrates. Carrier collection is studied by means of analytic models and by full electro-optical simulations. The results indicate that thin-film silicon solar cells can outperform bulk ones with comparable material quality, provided surface recombination is kept below a critical level, which is compatible with present-day surface passivation technologies.
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页数：10
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