臺灣博碩士論文加值系統

在此論文中，我們成功在氧化銦錫玻璃(ITO glass)上製備出表面修飾鉑電極，並應用在染料敏化太陽能電池(dye-sensitized solar cells，DSSC)。其中，鉑電極的製備採用PVP-Pt法，亦即使用poly(N-vinyl-2-pyrrolidone)聚合物形成鉑納米簇來進行熱處理，製成表面鉑修飾之電極。我們利用紫外-可見光吸收光譜(UV-Vis absorption spectroscopy，UV-Vis)、循環伏安法(cyclic voltammetry，CV)、和塔弗方程式(Tafel)來鑑定其光物理及電化學性質。此外，我們也將不同條件的鉑電極製成染敏電池元件，使用N719染料和I^-/I_3^-電解質，鑑定其元件效率的不同參數，包含電流密度-電壓圖(current-voltage plot，J-V plot)、電化學阻抗譜(electrochemical impedance spectroscopy，EIS)來探討電極製作條件與效率的關係。結果顯示鉑電極的製作參數與元件效率等表現有明顯的關係。其中，在使用相同PVP情況下，經較高溫(350°C)熱處理之鉑電極所製備之元件有較大的開環電壓(VOC)及較差的短路電流(JSC)，與填充因子(FF)；在使用相同熱處理溫度下，當使用過量(500 mg)或較大分子量(m.w. 55000)之PVP製作鉑電極時，其元件之V_OC與J_SC值相對較低，原因可能是PVP過度包覆Pt奈米粒子，無法有效媒介碘電解質之還原；當PVP使用克數偏少(25 mg)則同樣無法有效幫助Pt奈米粒子對碘電解質之還原，使V_OC 、Jsc偏低。使用m.w. 8000、125 mg之PVP並於270°C熱處理製作之PVP-Pt電極，所製成之染敏太陽能電池可得到PCE為7.167%的最佳轉換效率，其VOC為0.704 V，JSC為17.756 mA cm-2，FF 為0.573。

In this paper, we successfully fabricated platinum electrodes by surface modification on indium tin oxide (ITO glass) and used these electrodes for the application in dye-sensitized solar cells (DSSCs). The PVP-Pt protocol was used for the preparation of platinum electrodes, that is, the use of polymeric substract, poly(N-vinyl-2-pyrrolidone) (abbreviated as PVP), to form platinum nanoclusters for further sintering to prepare surfaces-deposited platinum electrodes. We used UV-Vis absorption spectroscopy (UV-Vis), cyclic voltammetry (CV), and Tafel equation to identify its photophysical and electrochemical properties. In addition, we also made platinum electrodes under different conditions into dye-sensitive battery elements, using N719 dye and I^-/I_3^--electrolyte, to identify different parameters of the element efficiency, including current-voltage plot (current-voltage plot, J-V plot) and electrochemical impedance spectroscopy (EIS) to explore the relationship between electrode fabrication conditions and efficiency. The results show that the fabrication parameters of platinum electrodes have a significant relationship with the performance of element efficiency. Among them, in the case of using the same PVP, the element prepared by the platinum electrode heat-treated at a higher temperature (350 °C) has a larger open-circuit voltage (VOC) and a poorer short-circuit current (JSC), and fill factor (FF) ; For components made with the same heat treatment temperature, when the number of grams of PVP is excessive (500 mg) or the molecular weight is large, due to the entanglement of PVP, it cannot effectively coat Pt nanoparticles and mediate the reduction of iodine electrolyte, so that VOC and Jsc are reduced, PVP When the number of grams is less (25 mg), the iodine electrolyte cannot be fully captured, resulting in lower VOC and Jsc. Using M.W. 8000, 125 mg of PVP and a PVP-Pt electrode made by heat treatment at 270 °C, the dye-sensitive solar cell can obtain the best conversion efficiency of PCE of 7.167 %, VOC of 0.704 V, and JSC of 17.756 mA cm-2, FF is 0.573.

中文摘要 I
英文摘要 III
致謝 V
目錄 VI
圖目錄 VII
表目錄 X
一、緒論 1
1-1 光伏效應(Photovolatic effect) 2
1-2 太陽能電池 4
1-3太陽能電池參數 6
1-4 染料敏化太陽能電池(Dye-sensitized solar cell, DSSCs) 8
1-5 電化學方法 16
1-6 線性掃描伏安法（Linear Sweep Voltammetry） 20
1-7 塔弗方程式（Tafel equation） 22
1-8 電化學阻抗譜(Electrochemical Impedance Spectroscopy，EIS) 23
1-9 文獻回顧 28
1-10研究背景與動機 44
二、實驗方法 45
2-1 一般方法 46
2-2 實驗步驟 49
三、結果與討論 54
四、結論 79
五、參考文獻 81

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