利用不同塑化劑製備膠態電解質應用於太陽能電池

Application of Different Plasticizers for the Gel-state Electrolytes Used in the Dye-sensitized Solar Cells

楊舜翔(Shun-Siang Yang)

指導教授 ： 王賢達

國立臺北科技大學/工程學院/有機高分子研究所/碩士(2011年)

摘要

現今的染料敏化太陽能電池大多是以液體電解質為主，但是此類電解質存在著許多缺點，主要是容易洩漏的缺點，降低了電池的使用時間，而外洩的化學物質亦對人體有毒害等等。因此在本研究採用添加塑化劑的方式，與PVDF-HFP製備成膠態電解質，並將其應用在太陽能電池上。
研究中是先比較不同的TiO2粉末(利用SEM與XRD觀察)在不同的晶相對於太陽能電池效率的影響。而後再以多加一層散射層的方式來提升電池的效率。電解質方面則是利用乙腈(Acetonitrile)和丙烯碳酸酯(Propylene Carbonate)兩種塑化劑，添加不同重量比的PVDF-HFP再摻入0.6 M NaI + 0.06 M I2 + 0.5 M TBP(4-tert-Butylpyridine)來製備膠態電解質。
將不同塑化劑所得到的膠態電解質組裝在電池上，並觀察不同塑化劑對於光電轉換效率的影響。經由電池效率的比較之後，可得知利用乙腈作為塑化劑所製成的膠態電解質相對於以丙烯碳酸酯為主所製成的膠態電解質可帶來較好的效果，當應用在染料敏化太陽能電池方面，所製成的膠態電解質可達到液態電解質八成的光電轉換效率。

關鍵字

含氟高分子 ； 染料敏化太陽能電池 ； 塑化劑 ； 膠態電解質

並列摘要

Gel-state electrolytes have been prepared using 0.6M NaI + 0.06M I2 + 0.5 M tert-butylpyridine + 8-10％poly(vinylidenefluoride-co-hexafluoropropylene)
[PVDF-HFP] with different plasticizers -acetonitrile、propylene carbonate and mixture of acetonitrile and propylene carbonate . The dye-sensitized solar cells (DSSC) have been assembled from anode containing Anatase TiO2 absorption and diffraction layers with N719 dye, Pt cathode and above gel-state electrolytes. The best photoelectric conversion efficiency (η=7.53％)was obtained from DSSC prepared with gel-state electrolyte of acetonitrile and 9％ PVDF-HFP.The second one (η=7.3) was from DSSC with gel-state electrolyte of the mixture of acetonitrile (9) and propylene carbonate (1) and 7％ PVDF-HFP. These DSSC conversion efficacies were about 86-89％ relative to that of DSSC using the same electrolyte without PVDF-HFP polymer.

並列關鍵字

dye-sensitzed solar cell ； plasticizers ； gel-state electrolyte

參考文獻

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