合成應用於溶液製程高分子太陽能電池的含苯並 [1,2-b:4,5-b’]二噻吩基共聚物;Synthesis of Benzo[1,2-b:4,5-b′]dithiophene-Based Copolymers for Solution Processed Polymer Solar Cells

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题名:	合成應用於溶液製程高分子太陽能電池的含苯並 [1,2-b:4,5-b’]二噻吩基共聚物;Synthesis of Benzo[1,2-b:4,5-b′]dithiophene-Based Copolymers for Solution Processed Polymer Solar Cells
作者:	吳幼琦;Wu,Yu-Qi
贡献者:	化學學系
关键词:	高分子太陽能電池;P-型材料;塊材異質接面;Polymer solar cell;P-type semiconductors;Bulk Heterojunction
日期:	2015-08-07
上传时间:	2015-09-23 10:53:04 (UTC+8)
出版者:	國立中央大學
摘要:	隨著科技的發展，石化燃料蘊藏量日益減少，尋找其他符合經濟效益的替代能源，是目前非常重要的議題。高分子太陽能電池(PSCs)因可以用塗佈或Roll-to-Roll方式製作，可大面積化以及可撓曲性，製程簡單、成本低廉，因而受到廣泛的注意，D-A (D = Donor; A = Acceptor)共聚物一般具有較高的光吸收係數，且其光電性質可藉由改變D或A的結構(或強度)而調整，常用於作為有機太陽能電池主動層中的P-型材料。本篇論文設計以((2-ethylhexyl)oxy) Benzo[1,2-b:4,5- b′]-Dithiophene (BDT) Donor單元搭配(4-(hexyloxy)phenyl)-Quino- xaline (Q)或(4(hexyloxy)phenyl)Pyrido[3,4-b]pyrazine (P) Acceptor單元，並加入了Thiophene (T)或3-Hexylthiophene (RT)進行結構修飾，合成出可作為PSCs主動層P-型材料的六個共聚物，PBDTQ、PTBDTQ、PRTBDTQ、PBDTP、PTBDTP以及PRTBDTP，探討不同Acceptor單元與主鏈修飾對於共聚物光電性質的影響，並搭配N-型材料奈米碳球PC71BM混摻為主動層，組裝成高分子太陽能電池並測試元件光電表現，其中以PTBDTP作為主動層所組裝的反相太陽能電池具有最高光電轉換效率，為4.40%。;The gradually decrease in the fossil fuel reserves pushes the scientists to search for alternative cost-effective energy resources. Polymer solar cell (PSC) which can be fabricated by spin-coating or roll-to-roll processes is one of the potential further green energy resource due to some advantages such as light-weight, mechanical flexibility, simple processing, low cost, and large-area device can be fabricated by roll-to-roll method. D-A (D: Donor; A: Acceptor) copolymers which generally having high absorption coefficient and adjustable (by donor and acceptor units) optical properties, have been widely used as a P-type semiconductors in the active layer of PSCs. In this thesis we designed and synthesized six new D-A copolymers including PBDTQ、PTBDTQ、PRTBDTQ、PBDTP、PTBDTP and PRTBDTP. These copolymers were synthesized by stille coupling of ((2-ethylhexyl)oxy)benzo[1,2-b:4,5-b′]- dithiophene (BDT) donor unit with (4-(hexyloxy)phenyl)quinoxaline (Q) or (4(hexyloxy)phenyl)pyrido[3,4-b]pyrazine (P) acceptor unit. Furthermore, thiophene (T) or 3-hexylthiophene (RT) was also introdued in the main chain to adjust the optical property of the copolymers. The effects of the acceptor unit and side chain modifications on the optoelectronic properties of copolymers were investigated. The bulk heterojunction (BHJ) polymer solar cells based on these copolymers fabricated via solution process were also explored. When PC71BM was used as a N-type material, PTBDTP based inverted BHJ device has the maximum efficiency of 4.40%.
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