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    题名: 探討階梯式五環芳烴高分子使用溶液製程法應用於高效率有機光伏電池
    作者: 楊昀修;Yang,Yun-Siou
    贡献者: 化學學系
    关键词: 階梯式高分子;溶液製程法;有機光伏電池;Ladder type polymer;solution processed;organic photovoltic
    日期: 2016-08-08
    上传时间: 2016-10-13 12:46:47 (UTC+8)
    出版者: 國立中央大學
    摘要: 近年來環保意識抬升,且石化燃料蘊藏量日益減少,因此尋找其他替代能源成為重要的議題,高分子太陽能電池 (PSCs) 因材料多元,可以溶液加工,便於大面積製作,且具可撓性,因而受到廣泛研究,階梯式高分子 (Ladder Type Polymer) 兼具平整的骨架及擴張的π共軛系統,可縮小高分子能隙並提高載子遷移率,適合用來當作 P - 型材料,另外,文獻曾報導polyethyl-enimine ethoxylated(PEIE)作為有機電子傳遞層,可以提高元件的光電轉換效率,本實驗使用的階梯式P -型高分子Donor單元分別為Benzene-thiophene-pyrrole、Thiophene-Benzene-pyrrole、Thiophene-thiophene-pyrrole,搭配N型材料的PCBM製作成反式有機太陽能電池,並於電子傳遞層與活性層之間添加PEI E有機電子傳遞層,實驗結果顯示 Donor單元為thiophene-thiophene-pyrrole的階梯式高分子在P/N比例為1:2,熱退火溫度120度時,所製備之主動層有最好的表面形貌,P型材料與N型材料所形成的Domain size大小適中,且有最高的電洞遷移率3.39×10-3 cm2V-1s-1,及最紅位移吸收波長,因此所組裝之元件有最高的光電流密度為14.28mA/cm2,光電轉換效率達6.04%。
    ;Recently,due to the raising in the environmental concern and the dwindling of the fossil fuel reserves, looking for other alternative energy sources become an important activity, Polymer solar cells (PSCs) is one of the possible energy resources under extensively studied,due to the diversity in material use,possible large-scale production through solution processing,and can be flexibility and thus subject to extensive research,Ladder type polymer with planer skeleton and expanded π-conjugated system,will have small energy gap and high carrier mobility for using as P-type material in PSC,Furthermore, it has been reported that polyethyl-enimine ethoxylated (PEIE) can apply as an electron transport layer to improve the power conversion efficiency of the cell.In this study I used three Ladder type polymers as the P-type polymer donor,PCBM as an N-type material to fabricate inverted organic solar cells, Extra PEIE layer was also added inbetween the electron transfer layer and the active layer, The results shows that when thiophene-thiophene-pyrrole ladder polymer was used as p-type, the P / N ratio of the active layer is 1: 2, thermal annealing temperature is 120 degrees, the resulting active film has proper morphology and high hole mobility of 3.39 × 10-3 cm2V-1s-1, Therefore, the corresponding inverted PSC has the highest photocurrent density of 14.28 mA/cm2 and power conversion efficiency of 6.04%.
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