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|標題:||The effects of the thickness of TiO2 films on the performance of dye-sensitized solar cells||作者:||Kao, M.C.
|關鍵字:||TiO2;Short-circuit photocurrent;Open-circuit voltage;Dye-sensitized;solar cell||Project:||Thin Solid Films||期刊/報告no：:||Thin Solid Films, Volume 517, Issue 17, Page(s) 5096-5099.||摘要:||
Nanocrystalline anatase TiO2 thin films with different thicknesses (0.5-2.0 mu m) have been deposited on ITO-coated glass substrates by a sol-gel method and rapid thermal annealing for application as the work electrode for dye-sensitized solar cells (DSSC). From the results, the increases in thickness of TiO2 films can increase adsorption of the N3 dye through TiO2 layers to improve the short-circuit photocurrent (J(sc)) and open-circuit voltage (V-oc), respectively. However, the J(sc) and V-oc of DSSC with a TiO2 film thickness of 2.0 mu m (8.5 mA/cm(2) and 0.61 V) are smaller than those of DSSC with a TiO2 film thickness of 1.5 mu m (9.2 mA/cm(2) and 0.62 V). It could be due to the fact that the increased thickness of TiO2 thin films also resulted in a decrease in the transmittance of TiO2 thin films thus reducing the incident light intensity on the N3 dye. An optimum power conversion efficiency (71) of 2.9% was obtained in a DSSC with the TiO2 film thickness of 1.5 pm. (c) 2009 Elsevier B.V. All rights reserved.
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