應用植物染料於染料敏化太陽能電池之研究

A Study of Dye-Sensitized Solar Cell by vegetable dyes and an application

廖祐昀(Yu-Yun Liao)

指導教授 ： 翁豊在

國立虎尾科技大學/工程學院/機械與機電工程研究所/碩士(2010年)

摘要

本研究主要探討不同植物染料（Dye）對於染料敏化太陽能電池（Dye sensitized solar cells, DSSC）之吸收效率。研究中使用P-25二氧化鈦粉末（TiO2 powder）製備為光電極，藉由刮刀成膜法（Doctor Blade Technique）在ITO導電玻璃上進行薄膜塗佈，其膜厚以固定膠帶厚度為基準，最後置於加熱板上以室溫至200℃進行2小時鍛燒；在製作染料過程中以濃度75%之酒精進行洛神花與番薯葉之植物染料萃取，而萃取後之染料濃度則固定在20%以利於往後實驗進行比較；有機染料Black dye則用無水酒精調配為濃度3×10-4M。完成染料敏化太陽能電池製作後，利用太陽光模擬器與紫外可見光光譜（Uv-vis）分別進行I-V特性與染料吸收波長之各參數探討，實驗中同時進行單一染料、混合染料與加入活性碳後之染料其開路電壓（Voc）、短路電流（Isc）、填充因子（FF）、效率（η）及吸收波長（λ）之參數評估。
最後將最佳參數之染料敏化太陽能電池與電子產品進行實際應用，並將電池串聯提高電壓使染料敏化太陽能電池可達到供應小型計算機的電量，且於室內之日光燈與室外之太陽光實際進行測試，以驗證實驗之準確性。

關鍵字：染料敏化太陽能電池、二氧化鈦、刮刀成膜法、植物染料

關鍵字

染料敏化太陽能電池 ； 二氧化鈦 ； 刮刀成膜法 ； 植物染料

並列摘要

The study is mainly discuss the difference of vegetable dyes to absorption efficiency of Dye sensitized solar cells. We use P-25 TiO2 powder to make electrode through Doctor Blade Technique in this study. The ITO surface thin film by coating, the primary of thin film was firmed by tape’s thick, and it was located in sintered at 200℃ for 2h ; the dye manufacture used 75% alcohol to extracted roselle and ipomoea, the extraction of dye concentration to fix at 20%. To compare with the next experiments in easy way ; the black dye used 99% alcohol to allot concentration at 3×10-4M. After Dye sensitized solar cells was finished. Use the 150W-Solar Simulator and UV-Visible Spectrometer to discuss within the parameters of I-V measurement and absorption wavelength. In the same time, we proceed the single dye, mix dye, and add carbon to obtain the parameters of open-circuit voltage, short-circuit current, fill factor, energy conversion efficiency, and absorption wavelength.
Finally, we apply to the best parameters of Dye sensitized solar cells,and the battery in series to increase voltage to make dye-sensitized solar cells can reach the computer's power supply for small, indoor fluorescent light and sunlight outside of the actual conduct of tests to verify the accuracy of experimental.

Keywords: Dye-Sensitized Solar Cell, TiO2 , Doctor Blade Technique, Vegetable dyest

並列關鍵字

Dye-Sensitized Solar Cell ； TiO2 ； Doctor Blade Technique ； Vegetable dyest

參考文獻

[7] S. Guha et al﹐Appl. Phys. Lett 1999﹐74﹐1860

[14] K. S. Narayan and Th. B. Singh,App,. Phys. Lett. 1999,74,3456.

[20] Frank Hurd and Robert Livingston,J. Phys. Chem. 1940,44,865.

[21] S. Chaberek, A. Shepp and R. J. Allen,J. Phys. Chem. 1965,69,641.

[22] S. Chaberek, A. Shepp and R. J. Allen,J. Phys. Chem. 1965,69,647.