改善低溫二氧化鈦漿料應用在軟性染料敏化太陽能電池上

The Study of Low Temperature TiO2 Paste for Flexible Dye Sensitized Solar Cells

林佳鋒(Chia-Feng Lin)

指導教授 ： 蘇昭瑾

國立臺北科技大學/工程學院/有機高分子研究所/碩士(2014年)

https://doi.org/10.6841/NTUT.2014.00362

摘要

軟性染料敏化太陽能電池具有輕巧、可彎曲和方便攜帶的優點，但軟性基板與二氧化鈦(Titanium dioxide，TiO2)附著力較差且無法適用於高溫製程，使得電池轉換效率降低，因此本研究首先利用UV-O3和加壓的方式提高二氧化鈦和軟性基材ITO-PEN之間的附著力，來提升短路電流進而增加光電轉換效率。經研究結果顯示，經由150 kg/cm2的壓力加壓後的TiO2工作電極，光電轉換效率由1.30 %提升至3.84 %。從以上的結果得知，使用加壓後的工作電極因TiO2薄膜較為緻密以及與ITO-PEN之間附著力的增加，而能有效提升電子傳遞速率進而提高染料敏化太陽能電池的效率。第二部分為加入黏著劑二異丙氧基二氯化鈦增加TiO2與ITO-PEN之間的鍵結。經研究結果顯示，加入300 μL、0.5 M的黏著劑的TiO2工作電極，光電轉換效率可提升14.6 %。從結果得知，加入黏著劑增強TiO2薄膜與ITO-PEN之間附著力，使加壓後達到更高的效率。

關鍵字

軟性 ； 低溫 ； 染料敏化太陽能電池 ； ITO-PEN ； 加壓

並列摘要

Due to the advantages of light weight, flexibility and portability, flexible dye-sensitized solar cells (DSSCs) have attracted much attention on green energy technology. However, the photo to electricity conversion efficiency of the flexible DSSCs has been limited due to the poor adhesion between the flexible substrate and TiO2 film as well as the limited process temperature (below 150 °C). The aim of this study is to enhance the conversion efficiency by treating the substrate surface physically and chemically and modifying the paste. First, we used the UV-O3 and compressing pretreatment process on ITO-PEN (Indium Tin Oxide coating on polyethylene naphthalate) substrate to enhance the TiO2/substrate adhesion. The results of that conversion efficiency increases from 1.30 % to 3.84 % because of the resultant high-dense TiO2 thin film. Secondly, we modified the paste by adding dichlorotitanium diisopropoxide [TiCl2(OPr)2] to enhance the bonding between the TiO2 and ITO-PEN. With the addition of 300 μL、0.5 M TiCl2(OPr)2 in to the original paste, the DSSCs efficiency increases up to 14.6 %. Therefore, the stronger adhesion between the TiO2 and ITO-PEN was formed to enhance the conversion efficiency of the cells, and achieve higher conversion efficiency by compressing process.

並列關鍵字

flexible ； low temperature ； dye-sensitized solar cells ； ITO-PEN ； compress

參考文獻

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