現今社會的發展，人們對石油的需求越來越大。但是石化燃料終會耗盡，並帶來空氣污染。所以發展乾淨、應用範圍廣、取之不盡、用之不竭的替代能源為目前當務之急。1991 年 Gr?tzel 教授發表關於二氧化鈦染料敏化太陽電池的應用，開啟了太陽能電池的新紀元。在本篇研究中，將探討用不同的二氧化鈦電極結構應用在染料敏化太陽能電池上。我們針對不同的二氧化鈦結構做了 X 光繞射、接觸角、紫外光?可見光光譜等分析。結果證明以具高比表面積的奈米結晶性半導體材料供染料吸附，確實可有效提升電池整體效能。從研究結果可以證明二氧化鈦電極和 TCPP 染料接觸面積的重要性，它對於染料敏化太陽能電池效率的提昇，扮演重要關鍵的角色。

The life of mankind with the development of the technology becomes more convenience and comfortable. It also makes us to need more energy, and the development of new energy becomes very important in this year. Recently, a new type of solar cell based on dye-sensitized nano-crystalline titanium dioxide has been developed by Gr?tzel and coworkers. Dye-sensitized solar cells based on nano-crystalline TiO2 electrodes are currently attracting widespread attention as a low cost alternative to conventional inorganic photovoltaic devices. In this research, applications of different TiO2 electrode structures on dye-sensitized solar cell were investigated. We investigate these different TiO2 electrode structures by X-ray diffraction (XRD), contact angle, ultraviolet-visible spectrophotometer (UV/Vis spectrophotometer). These results provide clear evidence for the contact area between TiO2 electrode and TCPP sensitizer plays an important role on the efficiency of dye-sensitized solar cell.