Texturing of the back reflector for light trapping enhancement in micromorph thin film solar cells

Kuang Chieh Lai, Fu Ji Tsai, Jen Hung Wang, Chih Hung Yeh, Mau Phon Houng

研究成果: Article同行評審

3 引文 斯高帕斯(Scopus)

摘要

The effects of textured back reflectors on light trapping in a-Si:H/μc-Si:H tandem cells are investigated with textured ZnO:Ga (GZO) back contacts obtained by surface wet etching. It is observed that rough back reflectors in fabricated tandem solar cells increase the short circuit current density of the bottom cells by 8%, which is attributed to light-trapping improvement. It is shown that enhanced longer wavelength light trapping is mainly attributable to improved light scattering at the back side by comparing identical a-Si:H/μc-Si:H tandem solar cells, both with a GZO back reflector but only one with a textured back reflector. The effectiveness of the textured GZO back reflector is also demonstrated in a textured a-Si:H/μc-Si:H tandem cell with a bottom cell thickness of 2 μm, which showed higher conversion efficiency than the reference cell.

原文English
頁(從 - 到)3946-3949
頁數4
期刊Thin Solid Films
519
發行號11
DOIs
出版狀態Published - 2011 三月 31

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

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