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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 4 — Feb. 15, 2010
  • pp: 3893–3904

Modeling the efficiency of Förster resonant energy transfer from energy relay dyes in dye-sensitized solar cells

Eric T. Hoke, Brian E. Hardin, and Michael D. McGehee  »View Author Affiliations


Optics Express, Vol. 18, Issue 4, pp. 3893-3904 (2010)
http://dx.doi.org/10.1364/OE.18.003893


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Abstract

Förster resonant energy transfer can improve the spectral breadth, absorption and energy conversion efficiency of dye sensitized solar cells. In this design, unattached relay dyes absorb the high energy photons and transfer the excitation to sensitizing dye molecules by Förster resonant energy transfer. We use an analytic theory to calculate the excitation transfer efficiency from the relay dye to the sensitizing dye accounting for dynamic quenching and relay dye diffusion. We present calculations for pores of cylindrical and spherical geometry and examine the effects of the Förster radius, the pore size, sensitizing dye surface concentration, collisional quenching rate, and relay dye lifetime. We find that the excitation transfer efficiency can easily exceed 90% for appropriately chosen dyes and propose two different strategies for selecting dyes to achieve record power conversion efficiencies.

© 2010 OSA

OCIS Codes
(160.2540) Materials : Fluorescent and luminescent materials
(260.2160) Physical optics : Energy transfer
(350.6050) Other areas of optics : Solar energy
(160.4236) Materials : Nanomaterials

ToC Category:
Solar Energy

History
Original Manuscript: December 16, 2009
Revised Manuscript: February 3, 2010
Manuscript Accepted: February 6, 2010
Published: February 11, 2010

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

Citation
Eric T. Hoke, Brian E. Hardin, and Michael D. McGehee, "Modeling the efficiency of Förster resonant energy transfer from energy relay dyes in dye-sensitized solar cells," Opt. Express 18, 3893-3904 (2010)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-4-3893


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