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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 3 — Feb. 1, 2010
  • pp: 2682–2694

Enhancing InGaN-based solar cell efficiency through localized surface plasmon interaction by embedding Ag nanoparticles in the absorbing layer

Jyh-Yang Wang, Fu-Ji Tsai, Jeng-Jie Huang, Cheng-Yen Chen, Nola Li, Yean-Woei Kiang, and C. C. Yang  »View Author Affiliations

Optics Express, Vol. 18, Issue 3, pp. 2682-2694 (2010)

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The use of localized surface plasmon (LSP) interaction for significantly enhancing InGaN absorption near its band edge and the overall efficiency of an InGaN-based solar cell by embedding Ag nanoparticles (NPs) in the InGaN absorbing layer is numerically demonstrated. The generation of LSP resonance on the embedded Ag NPs and the NP scattering can produce a field distribution in the InGaN layer for enhancing absorption. It is shown that the embedded Ag NPs do not significantly affect the transport of the photo-generated carriers. The distortion of static electrical stream lines in the solar cell due to the embedded Ag NP leads to a decrease of photocurrent by only a few percents. Based on the material parameter values we use, unless the surface recombination velocity at the interface between the Ag NP and surrounding InGaN is extremely high, Ag NP embedment in the absorbing layer of an InGaN-based solar cell can enhance its efficiency by up to 27%. Such an increase is significantly larger than that achieved by depositing metal NP on the top surface of a solar cell.

© 2010 OSA

OCIS Codes
(240.6680) Optics at surfaces : Surface plasmons
(350.6050) Other areas of optics : Solar energy

ToC Category:
Solar Energy

Original Manuscript: November 23, 2009
Revised Manuscript: January 1, 2010
Manuscript Accepted: January 18, 2010
Published: January 25, 2010

Virtual Issues
Focus Issue: Solar Concentrators (2010) Optics Express

Jyh-Yang Wang, Fu-Ji Tsai, Jeng-Jie Huang, Cheng-Yen Chen, Nola Li, Yean-Woei Kiang, and C. C. Yang, "Enhancing InGaN-based solar cell efficiency through localized surface plasmon interaction by embedding Ag nanoparticles in the absorbing layer," Opt. Express 18, 2682-2694 (2010)

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