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標題: Fabrication and Characterization of NP-TiO2 Thin Films for High Efficiency Dye-Sensitized Solar Cell Application
作者: Kuo, C.Y.
Lien, S.Y.
Wu, Z.S.
Shieu, F.S.
Chen, C.F.
期刊/報告no:: Nanoscience and Nanotechnology Letters, Volume 3, Issue 2, Page(s) 195-199.
摘要: In this research, the fabrication technique of Titanium-Dioxide (TiO2) with Anatase nano-particles thin film (NP-TiO2) electrode prepared by sol gel processes application which with more porous and specific surface area for dye-sensitized solar cells (DSSCs) was investigated.(1-5) NP-TiO2 thin films with different thickness (1 similar to 10 mu m) have been deposited on ITO coated glass substrates by a spin-coating method, and then annealing for application as the working electrode for DSSCs at 400 degrees C for 1 hour. The effects of NP-TiO2 on the morphology and phase stability have been discussed. The performance of DSSCs with different NP-TiO2 thickness was observed. The results show the dependencies of the open circuit voltage (V-OC), short circuit photocurrent density (J(SC)), fill factor (FF) and conversion efficiency (eta) on NP-TiO2 thickness for active layer of DSSC. It was found that the V-OC and FF decrease as the increase of the NP-TiO2 thickness. J(SC) increases strongly with increasing NP-TiO2 thickness and is reduced when NP-TiO2 thickness is increased by thickness of 7 mu m. The best result of DSSCs with a J(SC) of 13.4 mA/cm(2), V-OC of 0.7 V, and FE of 0.57, corresponding to an overall 71 of 5.4% are obtained under solar simulator with AM 1.5 G, 100 mW/cm(2). This study provides clear evidence for the contact area between NP-TiO2 electrode thickness and dye plays an important role on the efficiency of DSSCs.
ISSN: 1941-4900
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