2 April 2004 Down conversion of high-energy photons in anatase-based TiO2 solar cells
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For improving solar efficiencies, down conversion of high-energy photons to visible lights is discussed. The losses due to thermalization of charge carriers generated by the absorption of high-energy photons, can largely be reduced in a solar cell if more than one electron-hole pair can be generated per incident photon. The solar cell consists of dye-sensitized anatase-based TiO2, approximately 30 nm particle size, 6 μm thickness, and 6 x 6 mm2 active area, Pt counter electrode and T3/T2 electrolyte. Down conversion phosphor LiGdF4:Eu(LGF) located on the front surface of the solar cells. And we measured the photo-current, current-voltage characteristics, and down-characteristics, and down-conversion efficiency of the down conversion system.
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Hyun-Ju Kim, Hyun-Ju Kim, Jae-Sung S. Song, Jae-Sung S. Song, Boo-Kun Koo, Boo-Kun Koo, Dong-Yun Lee, Dong-Yun Lee, Won-Jae Lee, Won-Jae Lee, Jung-Hyuk Koh, Jung-Hyuk Koh, "Down conversion of high-energy photons in anatase-based TiO2 solar cells", Proc. SPIE 5276, Device and Process Technologies for MEMS, Microelectronics, and Photonics III, (2 April 2004); doi: 10.1117/12.530167; https://doi.org/10.1117/12.530167

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