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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 4 — Feb. 15, 2010
  • pp: 3746–3753

High efficiency thin-film crystalline Si/Ge tandem solar cell

G. Sun, F. Chang, and R. A. Soref  »View Author Affiliations


Optics Express, Vol. 18, Issue 4, pp. 3746-3753 (2010)
http://dx.doi.org/10.1364/OE.18.003746


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Abstract

We propose and simulate a photovoltaic solar cell comprised of Si and Ge pn junctions in tandem. With an anti-reflection film at the front surface, we have shown that optimal solar cells favor a thin Si layer and a thick Ge layer with a thin tunnel hetero-diode placed in between. We predict efficiency ranging from 19% to 28% for AM1.5G solar irradiance concentrated from 1 ~ 1000 Suns for a cell with a total thickness ~100 μm.

© 2010 OSA

OCIS Codes
(160.6000) Materials : Semiconductor materials
(350.6050) Other areas of optics : Solar energy

ToC Category:
Solar Energy

History
Original Manuscript: December 14, 2009
Revised Manuscript: January 6, 2010
Manuscript Accepted: January 6, 2010
Published: February 5, 2010

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

Citation
G. Sun, F. Chang, and R. A. Soref, "High efficiency thin-film crystalline Si/Ge tandem solar cell," Opt. Express 18, 3746-3753 (2010)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-4-3746


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References

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