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基于咔唑的有機太陽能電池材料的設計合成與性能研究

發(fā)布時間:2018-05-16 21:33

  本文選題:聚合物太陽能電池 + 染料敏化劑 ; 參考:《南昌航空大學》2014年碩士論文


【摘要】:有機太陽能電池不僅具有材料來源廣泛、價格低廉、工藝簡單等優(yōu)點,而且通過對其材料的設計可以調(diào)控太陽能電池器件的性能。本文主要對聚合物太陽能電池和染料敏化太陽能電池的原理和結(jié)構(gòu)進行了簡單的介紹,,并對其研究現(xiàn)狀和反展趨勢進行了概述,設計并合成了新型的具有Donor-Acceptor結(jié)構(gòu)的共軛聚合物材料和具有Donor-π-Acceptor結(jié)構(gòu)的染料敏化劑,并對其性能進行了相應的測試,最后將聚合物材料制成了兩種不同的太陽能電池器件進行了測試和分析。 (1)合成了含咔唑結(jié)構(gòu)的單體與帶烷氧基側(cè)鏈和帶噻吩側(cè)鏈的苯并二噻吩衍生物和與帶有不同官能團的含噻吩結(jié)構(gòu)的單體進行共聚,得到了PC2和PC3兩個聚合物,并對這個兩個聚合物的各項性能進行了測試,發(fā)現(xiàn)它們都具有良好的熱穩(wěn)定性和寬吸收光譜,這兩個聚合物的電化學能帶隙和光學能帶隙結(jié)果相近,都屬于低能帶隙聚合物,最后將聚合物與PC60BM進行共混制成了光活性層,并將此活性層制成的器件進行光電轉(zhuǎn)換效率的測試。 (2)合成兩種雙溴單體和一種雙錫化合物通過Stille偶合反應合成了一系列的聚合物,發(fā)現(xiàn)通過改變兩種雙溴單體的比例可以調(diào)節(jié)聚合物的能級,從而獲得較低能帶隙的聚合物。并對這些聚合物的各項性能進行了測試,發(fā)現(xiàn)它們都具有良好的熱穩(wěn)定性和寬吸收光譜,這兩個聚合物的電化學能帶隙和光學能帶隙結(jié)果相近,都屬于低能帶隙聚合物,最后將聚合物與二氧化鈦進行共混制成了雜化活性層,并將此活性層制成的雜化器件進行光電轉(zhuǎn)換效率的測試。 (3)合成了三種以咔唑作為電子給體,噻吩環(huán)和苯環(huán)作為共軛體系,氰基乙酸作為電子受體合成新型的染料敏化劑。并且設計保持給體和受體保持不變,通過改變共軛體系,發(fā)現(xiàn)噻吩環(huán)的增加使染料敏化劑材料的紫外可見吸收光譜發(fā)生了紅移。
[Abstract]:Organic solar cells not only have the advantages of wide range of materials, low price and simple process, but also can control the performance of solar cell devices through the design of materials. In this paper, the principle and structure of polymer solar cells and dye sensitized solar cells are briefly introduced, and their research status and trend of reverse development are summarized. A novel conjugated polymer material with Donor-Acceptor structure and a dye sensitizer with Donor- 蟺 -acceptor structure were designed and synthesized. Finally, two kinds of solar cell devices made of polymer materials were tested and analyzed. The monomer containing carbazole structure was synthesized by copolymerization with benzodithiophene derivatives with alkoxy side chain and thiophene side chain and with thiophene with different functional groups. Two polymers, PC2 and PC3, were obtained. The properties of the two polymers were tested. It was found that the two polymers had good thermal stability and wide absorption spectra. The results of the electrochemical band gap and optical band gap of the two polymers were similar, and they were both low energy band gap polymers. Finally, the photoactive layer was prepared by blending the polymer with PC60BM, and the photoelectric conversion efficiency of the device was measured. A series of polymers were synthesized by Stille coupling reaction. It was found that the energy levels of the polymers could be adjusted by changing the ratio of the two dibromogenic monomers, thus the polymers with lower energy band gap could be obtained. The properties of these polymers were tested. It was found that they all had good thermal stability and wide absorption spectra. The results of electrochemical band gap and optical band gap of these two polymers were similar, and they were both low energy band gap polymers. Finally, the hybrid active layer was prepared by blending the polymer with titanium dioxide, and the photoelectric conversion efficiency of the hybrid device was measured. Three new dye sensitizers were synthesized using carbazole as electron donor thiophene ring and benzene ring as conjugate system and cyanoacetic acid as electron acceptor. By changing the conjugated system, it is found that the increase of thiophene ring makes the UV-Vis absorption spectra of dye sensitizer materials red shift.
【學位授予單位】:南昌航空大學
【學位級別】:碩士
【學位授予年份】:2014
【分類號】:TM914.4;O631

【參考文獻】

相關期刊論文 前1條

1 梁茂,陶占良,陳軍;染料敏化太陽能電池中的敏化劑[J];化學通報;2005年12期



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