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

3 引文 (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

指紋

Texturing
reflectors
solar cells
trapping
augmentation
Solar cells
thin films
cells
Wet etching
Short circuit currents
Light scattering
Conversion efficiency
Current density
Cells
Wavelength
short circuit currents
light scattering
Thin film solar cells
etching
current density

All Science Journal Classification (ASJC) codes

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

引用此文

Lai, Kuang Chieh ; Tsai, Fu Ji ; Wang, Jen Hung ; Yeh, Chih Hung ; Houng, Mau-phon. / Texturing of the back reflector for light trapping enhancement in micromorph thin film solar cells. 於: Thin Solid Films. 2011 ; 卷 519, 編號 11. 頁 3946-3949.
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abstract = "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.",
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Texturing of the back reflector for light trapping enhancement in micromorph thin film solar cells. / Lai, Kuang Chieh; Tsai, Fu Ji; Wang, Jen Hung; Yeh, Chih Hung; Houng, Mau-phon.

於: Thin Solid Films, 卷 519, 編號 11, 31.03.2011, p. 3946-3949.

研究成果: Article

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AU - Wang, Jen Hung

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AU - Houng, Mau-phon

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AB - 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.

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