新型碳六十衍生物之合成及其有機太陽能電池之應用研究

Synthesis of novel C60 derivatives and the application in organic solar cells

徐偉倫(Wei-Lung Hsu)

指導教授 ： 芮祥鵬 ； 王立義

國立臺北科技大學/工程學院/有機高分子研究所/碩士(2007年)

摘要

近來能源危機，太陽能電池的研究漸漸被重視，在全固態的有機太陽能電池方面，使用poly(3-hexylthiophene) (P3HT)及[6,6]-phenyl C61-butyric acid methyl ester (PCBM)作為光作用層所形成的系統最被廣為研究，且其能量轉換效率已可達到約5%。由於元件的效率與碳六十衍生物的能階及其在溶劑的溶解度與聚集行為息息相關。因此，本研究之主要目的在於合成一種具有良好溶解性的新型碳六十衍生物。首先，異丙基苯醇和丙二酸在DCC及HOBT的存在下進行酯化反應，合成出bis(4-isopropylbenyl)malonate再跟碳六十在鹼性的環境下進行Bingel reaction ，由於鹼性環境下被脫氫而跟鹵素鍵結，接著碳上的鹵素游離，而使碳六十上有了一對未鍵結的電子對，再去跟bis(4-isopropylbenyl)malonate反應出我們的產物bis(4-isopropylbenyl)(1,2-methanofullerene C60)-61,61- Dicarboxylate (IBMDC)。然後，我們分別以1H-NMR、13C-NMR、UV-vis、FT-IR、MALDI-TOF MS及EA等儀器分析鑑定其化學結構，並以UV測定材料能隙(band gap) ，再製備做成元件，探討元件製作條件如:IBMDC和導電高分子的掺混比例及製作元件所需退火的溫度時間而去觀察材料在元件上有何應用及效果，並以AFM所得到的奈米形態輔助說明。

關鍵字

有機光伏打電池 ； 碳六十 ； Bingel reaction

並列摘要

Photovoltaic cells containing organic semiconductors have attracted considerable attention because their electrical and optical properties can be varied widely, and generally they can be fabricated more easily than inorganic photovoltaic cells. In solid state organic solar cell, using blends of poly (3-hexylthiophene) (P3HT) and [6,6]-phenyl C61-butyric acid methyl ester (PCBM) as active layers were widely studied, and its energy conversion efficiency can up to about 5%. The main purpose of this research is to synthesize a new type of C60 derivatives with good solubility. Chemical structures were analyzed by 1H-NMR, 13C-NMR, UV-vis, MALDI-TOF MS, and EA. The bandgap of thus-prepared materials can be determined by UV-vis. Furthermore, the devices were fabricated, and the parameters for optimizing device performance, like the ratio of IBMDC and conducting polymer, annealing temperature, etc. were studied and discussed. The morphology of the blends revealing nano-scale phase separation was obtained by AFM.

並列關鍵字

Bingel reaction ； Fullerene ； Organic Photovoltaic cell

參考文獻

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