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New Light Trapping in Thin Film Solar Cells Using Textured Photonic Crystals

  • Lirong Zeng (a1), Yasha Yi (a1), Ching-Yin Hong (a1), Xiaoman Duan (a1) and Lionel C. Kimerling (a1)...

A novel light trapping scheme is developed to enhance the optical path length in solar cells by using a photonic structure as the backside reflector. This structure combines a reflection grating on the substrate with an over-deposited distributed Bragg reflector (DBR). With this structure, the optical path length can be enhanced by more than 104 times with very little reflection loss. In turn, solar cell efficiency is predicted to be enhanced enormously.

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[1] Hamakawa, Y. (Ed.), Thin-Film Solar Cells, Next generation Photovoltaics and Its Applications, Springer, Berlin; New York, 2004.
[2] Chopra, K. L., Paulson, P.D., and Dutta, V.., Prog. Photovolt.: Res. Appl. 12, 69 (2004).
[3] Green, Martin A., Silicon Solar Cells, Advanced Principles & Practice, University of New South Wales, Sydney, Australia, 1995.
[4] Schade, H. and Smith, Z., J. Appl. Phys., 57, 568 (1985).
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MRS Online Proceedings Library (OPL)
  • ISSN: -
  • EISSN: 1946-4274
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