Journal
SOLAR ENERGY MATERIALS AND SOLAR CELLS
Volume 95, Issue 2, Pages 800-803Publisher
ELSEVIER
DOI: 10.1016/j.solmat.2010.09.018
Keywords
Rare earth; YAG; Dye-sensitized solar cells; Spectral response
Funding
- National University of Singapore
- Office of Naval Research, USA
- Chinese National Nature Science Foundation
- Shanghai Light-Tech Project
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In order to demonstrate efficiency improvement of solar cells through utilization of frequency-shifted sub-band-gap photons, we prepared Y3Al5O12 transparent ceramics co-doped with 3.0 at% Yb3+ and 0.5 at% Er3+ (YAG:3.0Yb/0.5Er) by solid state reaction. The material's upconversion luminescence was investigated and it was found that near-infrared light could be effectively converted to green light centered at 563 nm, where a dye-sensitized solar cell normally possessed high spectral response. Using a thin disk of YAG:3.0Yb/0.5Er transparent ceramics attached to the rear of the dye-sensitized solar cell, the near-infrared response of the dye-sensitized solar cell was enhanced, due to the frequency upconversion. (C) 2010 Elsevier B.V. All rights reserved.
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