- 學位論文
以無電鍍法製備二氧化鈦-銀複合電極在染料敏化太陽能電池上之應用
Synthesis of TiO2-Ag Electrode Using Electroless Route for DSSC Application
摘要
為了提升染料敏化太陽能電池之光電轉換效率，因此利用無電鍍法在Degussa-P25粉末上鍍銀，希望藉由增加陽極之電子傳導性而達到增加光電轉換效率之目的。 以無電鍍法製備二氧化鈦-銀會造成粉末嚴重團聚，此種團聚現象會導致短路電流降低，因此光電轉換效率不如預期;藉由在450℃持溫30分鐘作熱處理，可以減少此種團聚現象，提升短路電流值，光電轉換效率最高可達4.5%。 利用旋轉塗佈兩種不同粉末之方法製作二氧化鈦-銀複合式電極，可以進一步增加短路電流值並提升光電轉換效率，光電轉換效率最高可達4.8%。 以添加直接還原之銀粉製作陽極，雖然可避免無電鍍法鍍銀時之粉末團聚現象，因此能增進短路電流值並提高光電轉換效率，但是會造成銀粉混合不均勻而無法進一步探討，光電轉換效率最高可達4.0%。
並列摘要
In order to enhance the conversion efficiency of DSSC, the experiment deposits Ag-island on Degussa-P25 using Electroless Route. Ag-island could increase electric conductivity of anode. The lower conversion efficiency of DSSC and the lower short current in Electroess Route, because the agglomerates strongly of Degussa-P25. The powder via thermal treatment in 450℃ for 30 min reduces the agglomeration of Degussa-P25, and increases the short current. The conversion efficiency of DSSC is 4.5%. Spin coating two different powders for fabricating TiO2-Ag Electrode increases the conversion efficiency of DSSC further. The highest conversion efficiency of DSSC is 4.8%. Mixing Ag-island and Degussa-P25 directly could avoid the agglomeration, and increases the short current. But “Uniform” is a problem of Mixing. The conversion efficiency of DSSC is 4.0%.