Enhancing near-infrared solar cell response using upconverting transparentceramics |
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| Authors: | M. Liu Yalin LuZ.B. Xie G.M. Chow |
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| Affiliation: | a Department of Materials Science and Engineering, University of Science and Technology of China, 96 Jinzhai Road, Hefei City 230026, PR China
b Department of Materials Science and Engineering, National University of Singapore, Kent Ridge, Singapore 117574, Singapore |
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| Abstract: | 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. |
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| Keywords: | Rare earth YAG Dye-sensitized solar cells Spectral response |
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