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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 3 — Feb. 10, 2014
  • pp: 2860–2867

Flexible-textured polydimethylsiloxane antireflection structure for enhancing omnidirectional photovoltaic performance of Cu(In,Ga)Se2 solar cells

Shou-Yi Kuo, Ming-Yang Hsieh, Hau-Vei Han, Fang-I Lai, Tsung-Yeh Chuang, Peichen Yu, Chien-Chung Lin, and Hao-Chung Kuo  »View Author Affiliations

Optics Express, Vol. 22, Issue 3, pp. 2860-2867 (2014)

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Because of the Sun’s movement across the sky, broadband and omnidirectional light harvesting is a major development in photovoltaic technology. This study reports the fabrication and characterization of flexible-textured polydimethylsiloxane (PDMS) film on Cu(In,Ga)Se2 (CIGS) solar cells, which is one of the simplest and cheapest peel-off processes for fabricating a three-dimensional structure. A cell containing a textured PDMS film enhanced the short-circuit current density from 22.12 to 23.93 mA/cm2 in a simulated one-sun scenario. The omnidirectional antireflection of CIGS solar cells containing various PDMS films is also investigated. This study uses an angle-resolved reflectance spectroscope to investigate the omnidirectional and broadband optical properties of the proposed PDMS film. This improvement in light harvesting is attributable to the scattering of the PDMS film and the gradual refractive index profile between the PDMS microstructures and air. The flexible-textured PDMS film is suitable for creating an antireflective coating for a diverse range of photovoltaic devices.

© 2014 Optical Society of America

OCIS Codes
(040.5350) Detectors : Photovoltaic
(160.4760) Materials : Optical properties

ToC Category:
Thin Films

Original Manuscript: November 7, 2013
Revised Manuscript: January 10, 2014
Manuscript Accepted: January 10, 2014
Published: January 31, 2014

Shou-Yi Kuo, Ming-Yang Hsieh, Hau-Vei Han, Fang-I Lai, Tsung-Yeh Chuang, Peichen Yu, Chien-Chung Lin, and Hao-Chung Kuo, "Flexible-textured polydimethylsiloxane antireflection structure for enhancing omnidirectional photovoltaic performance of Cu(In,Ga)Se2 solar cells," Opt. Express 22, 2860-2867 (2014)

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