Efficient light trapping in ultrathin-crystalline-silicon solar cells using TiO2 nanosphere arrays

Jian Wang; Chenbo Wang; Daxue Du; Xiaoya Duan; Taoran Zhang; Qizhu Lu; Haiyan Wang; Zhaopeng Xu

doi:10.1117/12.2506400

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15 November 2018 Efficient light trapping in ultrathin-crystalline-silicon solar cells using TiO₂ nanosphere arrays

Jian Wang, Chenbo Wang, Daxue Du, Xiaoya Duan, Taoran Zhang, Qizhu Lu, Haiyan Wang, Zhaopeng Xu

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Proceedings Volume 10964, Tenth International Conference on Information Optics and Photonics; 109645P (2018) https://doi.org/10.1117/12.2506400
Event: Tenth International Conference on Information Optics and Photonics (CIOP 2018), 2018, Beijing, China

Abstract

Ultrathin-crystalline-silicon solar cell is important for its low cost and flexibility, but its efficiency is low. Light trapping technology is a useful way to improve the efficiency. In this paper, we design a TiO₂ nanosphere arrays on the top of the ultrathin-crystalline-silicon solar cells with 2-μm-thickness to achieve advanced light trapping property. The finite element method is used to study the optical properties of the sphere nanostructure on the ultrathin-crystalline-silicon solar cells. The light trapping ability is systematically studied by COMSOL multiphysics. The results show that the sphere nanostructure can highly increase the light absorption of the ultrathin-crystalline-silicon in the wavelengths from 300 to 1200 nm. The average absorption rate increases by 58.63% compared to 2-μm-thick crystalline silicon.

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Jian Wang, Chenbo Wang, Daxue Du, Xiaoya Duan, Taoran Zhang, Qizhu Lu, Haiyan Wang, and Zhaopeng Xu "Efficient light trapping in ultrathin-crystalline-silicon solar cells using TiO₂ nanosphere arrays", Proc. SPIE 10964, Tenth International Conference on Information Optics and Photonics, 109645P (15 November 2018); https://doi.org/10.1117/12.2506400

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