Fabrication of Nano-TiO2 Coating for Dye-sensitized Solar Cell by Vacuum Cold Spraying at Room Temperature
Deposition of nanocrystalline TiO2 coatings at low temperatures is becoming more attractive due to the possibility for continuous roll production of coatings for assembly lines of dye-sensitized solar cell at a low cost. In this study, porous nano-TiO2 coatings were deposited by vacuum cold spraying at room temperature on a conducting glass substrate using commercial P25 nanocrystalline TiO2 powder. The microstructure of TiO2 coatings was characterized by field emission scanning electron microscopy and N2 adsorption test. A commercial dye (N719) was adsorbed on the surface of TiO2 particles within the coating to assemble a dye-sensitized solar cell. The cell performance was evaluated employing simulated solar light at an intensity of 100 mW/cm2. The results showed that TiO2 coatings were deposited by the agglomerates of nano-TiO2 powders. The BET test of the assprayed TiO2 coatings yielded a porosity of 49％ and an average pore size of 17 nm. The assembled solar cell yielded a short-circuit current density of 7.3 mA/cm2 and an energy conversion efficiency of 2.4％. The test result indicates that vacuum cold spraying was a promising method to deposit nanocrystalline TiO2 coating at low temperature applied to the dye-sensitized solar cell.
S.-Q. Fan C.-J. Li G.-J. Yang L.-Z. Zhang J.-C. Gao Y.-X. Xi
State Key Laboratory for Mechanical Behavior of Materials School of Materials Science and Engineerin Applied Chemistry Department, School of Science, Xian Jiaotong University Xian, Shaanxi, P. R. Chi
国际会议
北京
英文
2007-05-14（万方平台首次上网日期，不代表论文的发表时间）