Down conversion of high-energy photons in anatase-based TiO2 solar cells

Hyun-Ju Kim; Jae-Sung S. Song; Boo-Kun Koo; Dong-Yun Lee; Won-Jae Lee; Jung-Hyuk Koh

doi:10.1117/12.530167

2 April 2004 Down conversion of high-energy photons in anatase-based TiO₂ solar cells

Hyun-Ju Kim, Jae-Sung S. Song, Boo-Kun Koo, Dong-Yun Lee, Won-Jae Lee, Jung-Hyuk Koh

Proceedings Volume 5276, Device and Process Technologies for MEMS, Microelectronics, and Photonics III; (2004) https://doi.org/10.1117/12.530167
Event: Microelectronics, MEMS, and Nanotechnology, 2003, Perth, Australia

Abstract

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.

Citation Download Citation

Hyun-Ju Kim, Jae-Sung S. Song, Boo-Kun Koo, Dong-Yun Lee, Won-Jae Lee, and 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); https://doi.org/10.1117/12.530167

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