Solid-state dye-sensitized mesoporous TiO2 solar cells with high photon-to-electron conversion efficiencies

被引:3273
作者
Bach, U
Lupo, D
Comte, P
Moser, JE
Weissörtel, F
Salbeck, J
Spreitzer, H
Grätzel, M [1 ]
机构
[1] Swiss Fed Inst Technol, Inst Photon & Interfaces, CH-1015 Lausanne, Switzerland
[2] Hoechst Res & Technol Deutschland GmbH & Co KG, D-65926 Frankfurt, Germany
[3] Max Planck Inst Polymer Res, D-55128 Mainz, Germany
关键词
D O I
10.1038/26936
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Solar cells based on dye-sensitized mesoporous films of TiO2 are low-cost alternatives to conventional solid-state devices' Impressive solar-to-electrical energy conversion efficiencies have been achieved with such films when used in conjunction with liquid electrolytes(2), Practical advantages may be gained by the replacement of the liquid electrolyte with a solid charge-transport material. Inorganic p-type semiconductors(3,4) and organic materials(5-9) have been tested in this regard, but in all cases the incident monochromatic photon-to-electron conversion efficiency remained low. Here we describe a dye-sensitized heterojunction of TiO2 with the amorphous organic hole-transport material 2,2',7,7'-tetrakis(N,N-di-p-methoxyphenyl-amine)9,9'-spirobifluorene (OMeTAD; refs, 10 and 11). Photoinduced charge-carrier generation at the heterojunction is very efficient, A solar cell based on OMeTAD converts photons to electric current with a high yield of 33%.
引用
收藏
页码:583 / 585
页数:3
相关论文
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