染敏太陽能電池用之高表面積二氧化鈦之製備及性質

Preparation and Properties of the Dye-Sensitized Solar Cells based on High Surface Area Titanium Oxide

韓繼中(Chi-Chung Han)

指導教授 ： 陳玉惠

中原大學/理學院/化學研究所/碩士(2006年)

https://doi.org/10.6840/cycu200600493

摘要

本論文主要先自製高表面積之中孔洞二氧化鈦粒子（T10），以供製備染料敏化太陽能電池（Dye-Sensitized Solar Cells, DSSCs）之工作電極使用及研究其性質，並與市售之二氧化鈦粒子（P25）所組成之DSSCs的光電流效應相比較。
實驗顯示，本研究所製備的T10表面積為市售P25的七倍之多，以此二種不同表面積之二氧化鈦粒子為材料探討不同的變因(含：TiCl4處理、染料吸附量、染料濃度、及染料吸附時間等)製備之工作電極，對DSSCs轉化效率之影響。結果得知，以T10為材料所製備之工作電極經過TiCl4的處理之後，不但可以改善電極表面的孔隙缺點，組裝成DSSCs之後也呈現出優於P25的轉換效率與閉路電流的數值。另外，比對TEM、BET與DSSCs的I-V測量結果得知，T10電極具有毛細現象的作用，其染料吸附速度較P25快且吸附量較多，進而有效提升DSSCs的閉路電流與轉換效率。綜合各項實驗結果顯示，自製二氧化鈦之高表面積有助於提升DSSCs整體的效能。

關鍵字

二氧化鈦 ； 染敏太陽能電池 ； 染料敏化

並列摘要

In this study, a home-made mesoporous titanium oxide powder (T10) was prepared and used as the working electrode material to prepare the Dye Sensitized Solar Cells (DSSCs). The photovoltaic properties of the as-prepared DSSCs were studied and compared with that of the DSSCs
prepared with the commercial TiO2 nanoparticles, P25.
It was found that the surface area of T10 was six times larger than that of P25 nanoparticles. The effect of various parameters, which included thickness of titanium oxide thin film, concentration of dye solution, immersing time and TiCl4 treatment, on the efficiencies of the
DSSCs prepared by T10 and P25 was investigated.
The results showed that the efficiency of the as-prepared DSSC was increased by treatment of TiCl4, increasing thickness of TiO2 film, enlarging dye concentration and prolonging dye immersing time. In all, The efficiencies of the T10-based DSSCs were higher than the P25-based DSSCs. This was mainly ascribed to the morphology and the high surface
area of T10 nanoparticles.

並列關鍵字

dye sensitized solar cell ； mesoporous tio2

參考文獻

[29] J.J.M. Halls, C. A. Walsh, N.C. Greenham, E.A. Marseglia, R.H. Friend, S.C. Moratti and A.B. Holmes, Nature, 376(1995), 498

[30] A.J. Breeze, Z. Schlesinger and S.A. Carter, Physical Review,

[10] K. A. Bertness, Sarah R. Kurtz, D. J. Friedman, A. E. Kibbler, C. Kramer, and J. M. Olson, Applied Physics Letters, 65(1994), 989-991

[3] A. Lin, X.J. Wong, Y.X. Li, L. Chou, J. Solar Energy Materials & Solar cells, 62 (2000), 149-155.

[9] Hollands, K.G.T, Solar Energy, 54(1995), 1-2.