Photonic crystal silicon based structures for thin film solar cell

E. Drouard; Y. Park; O. El Daif; X. Letartre; P. Viktorovitch; A. Fave; A. Kaminski; M. Lemiti; C. Seassal

doi:10.1117/12.851866

30 November 2009 Photonic crystal silicon based structures for thin film solar cell

E. Drouard, Y. Park, O. El Daif, X. Letartre, P. Viktorovitch, A. Fave, A. Kaminski, M. Lemiti, C. Seassal

Proceedings Volume 7635, Display, Solid-State Lighting, Photovoltaics, and Optoelectronics in Energy; 76350G (2009) https://doi.org/10.1117/12.851866
Event: Asia Communications and Photonics, 2009, Shanghai, Shanghai , China

Abstract

A design is proposed to significantly increase the absorption of a thin layer of absorbing material such as amorphous silicon. This is achieved by patterning a one-dimensional photonic crystal (1DPC) in this layer. Indeed, by coupling the incident light into slow Bloch modes of the 1DPC, we can control the photon lifetime and then, enhance the absorption integrated over the whole solar spectrum. Optimal parameters of the 1DPC maximize the integrated absorption in the wavelength range of interest, up to 45% in both S and P polarization states instead of 33% for the unpatterned, 100 nm thick amorphous silicon layer. Moreover, the absorption is tolerant with respect to fabrication errors, and remains relatively stable if the angle of incidence is changed.

Citation Download Citation

E. Drouard, Y. Park, O. El Daif, X. Letartre, P. Viktorovitch, A. Fave, A. Kaminski, M. Lemiti, and C. Seassal "Photonic crystal silicon based structures for thin film solar cell", Proc. SPIE 7635, Display, Solid-State Lighting, Photovoltaics, and Optoelectronics in Energy, 76350G (30 November 2009); https://doi.org/10.1117/12.851866

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