THE TRANSPORT AND RECOMBINATION KINETICS IN DYE-SENSITIZED SOLAR CELLS WITH DIFFERENT NANOPOROUS FILMS
The high light-to-energy conversion efficiencies achieved with dye-sensitized solar cells may be attributed to the nanoporous TiO2 electrodes. Nanoporous electrode films are prepared from different sized anatase TiO2 nanoparticles, of which the crystalline size is 13.4 and 17.5 nm, and DSCs are prepared from these films. Intensity modulated photocurrent spectroscopy has been used to obtain values of the electron diffusion coefficient. Intensity modulated photovoltage spectroscopy is shown to be valuable in achieving the different electron lifetime during the electron transport process resulting from different crystalline size and thickness of TiO2 films. The transport and recombination kinetics was discussed by investigating the change of the absorption coefficient, electron diffusion coefficient and electron lifetime in the cells. The results implied that the films morphology influence the electron transport and back reaction processes.
Linhua Hu Songyuan Dai Linyun Liang Jun Dai Weiqing Liu Kongjia Wang
Division of Solar Energy Materials and Engineering, Institute of Plasma Physics, Chinese Academy of Sciences P.O.Box 1126, Hefei, Anhui, P.R.China
国际会议
2007世界太阳能大会(Proceedings of ISES Solar World Congress 2007)
北京
英文
2007-09-18（万方平台首次上网日期，不代表论文的发表时间）