以低溫製程製備可撓式染料敏化太陽能電池的二氧化鈦正電極材料研究

Low temperature process for the preparation of titanium dioxide-based flexible dye-sensitized solar cell positive electrode materials

陳彥凱(Yen-Kai Chen)

指導教授 ： 陳志恆

國立臺北科技大學/工程學院/資源工程研究所/碩士(2014年)

https://doi.org/10.6841/NTUT.2014.00915

摘要

染料敏化太陽電池(DSSC)具有低成本、光敏感度強、製程簡單的優勢。使用可撓式透明導電塑膠基材ITO-PET取代導電玻璃可以使DSSC擁有更低廉的成本、更輕的重量、可彎曲的特性，可運用軟性電子與軟性顯示器上。由於PET塑膠基材不能使用高溫處理，因此必須使用低溫程序以製備正電極的TiO2層，此表面需具有多孔性以在敏化過程中吸附染料分子。此外，對於可撓性而言，在DSSC進行彎曲時需考慮到TiO2層必需要擁有良好的機械強度，且導電特性是必需的。此研究分別以乙二醇與乙醇為溶劑配置TiO2漿料塗佈於ITO-PET上，以低溫熱處理與UV燈照處理法備製TiO2薄膜複合層，搭配可大量生產的加工處理備製ITO-PET正電極材料。經實驗結果，分別以熱處理靜壓加工與UV燈照高溫高壓脫泡加工，備製出的TiO2複合層薄膜具有高機械性、多孔性與導電性。經實驗參數優化可縮短加工時間，製程與設備適合大量生產，所以備製出的複合材料適合用來作可撓式DSSC正電極材料。

關鍵字

染料敏化太陽能電池 ； 可撓式 ； 複合材料

並列摘要

Dye-sensitized Solar Cell (DSSC) has advantages of low cost, strong light sensitivity, simple processing. It can make DSSC have lower cost, lighter weight and flectional characteristics by using flexible transparent conductive plastic substrate ITO-PET to replace conductive glass, which can be used on flexible electronics and flexible display. PET substrate is not available for high temperature process, thus the TiO2 layer of positive electrode must be prepared under low temperature procedure. The surface of TiO2 layer features porosity property that enables to absorb dyes in sensitization process. Furthermore, for flexibility, it has to consider the TiO2 layer’s mechanical strength while the DSSC is bent, and conductivity is also needed. The research brushes TiO2 sizing agent onto ITO-PET with ethylene glycol and ethanol as solvent respectively, and prepares the TiO2 composite film layer by low temperature thermal treatment and UV irradiation processing, and cooperates with positive electrode material ITO-PET capable of mass production. The experimental result shows that the TiO2 composite layer prepared by heat treatment static pressure and UV irradiation HTHP de-aeration procedure is provided with high mechanical strength, porosity and conductivity properties. The optimized experimental parameter can shorten the production time. The processing and its equipments are suitable for mass manufacturing, so the composite material is fit to produce flexible DSSC positive electrode material.

並列關鍵字

Dye-sensitized solar cells ； Flexible ； Composite Materials

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