PBHTBT高分子合成與其光電性質研究

Synthesis and Optoelectronic Studies of Poly[4,7-Bis(3-hexylthiophene-5-yl)benzo-2,1,3-thiadiazole] (PBHTBT)

王冠傑(Kuan-Chieh Wang)

指導教授 ： 蔣見超

國立中正大學/工學院/化學工程學系/碩士(2013年)

摘要

本論文先以Stille coupling reaction合成小分子單體4,7-Bis(4-hexylthiophen-2-yl)benzo[c][1,2,5]thiadiazole(BHTBT)後，並藉由FeCl3氧化聚合法聚合出高分子Poly[4,7-Bis(3-hexyl-5-thiopheneyl)benzo-2,1,3-thiadiazole]（PBHTBT）。
透過1H-NMR及液相層析質譜儀LC-MS分析其結構和分子量，證明成功合出高純度小分子BHTBT；而聚合後的高分子PBHTBT經由1H-NMR圖譜鑑定其結構；經由AFM觀察高分子塗佈在ITO玻璃上的表面型態；經由TGA發現其具有良好的熱穩定性；在DSC分析中則觀察到有Tg點及Tm點，顯示PBHTBT為一結晶性材料；利用UV-Vis分析其吸收光譜；由循環伏安實驗量測高分子的化學能隙；並探討該高分子之熱性質、及光電性質。
最後，將PBHTBT製成有機太陽能電池，使用PBHTBT與PCBM依重量比例混合配成溶液，做為有機太陽能電池的主動層，藉此探討高分子PBHTBT對太陽能電池效率之影響。

關鍵字

光電材料 ； 氧化聚合反應 ； 共軛導電高分子 ； 施蒂勒反應

並列摘要

The study is to synthesis Poly[4,7-Bis(3-hexyl-5-thiopheneyl)benzo-2,1,3-thiadiazole]（PBHTBT） by oxidation polymerization. First, we prepare BHTBT monomer by Stille coupling reaction, and then use FeCl3 as oxidant to polymerise BHTBT into PBHTBT.
The 1H-NMR spectrum and LC-MS spectrum show that the monomer has high purity. Also, the structure of PBHTBT was proved by 1H-NMR, and the surface appearance was observed by AFM. TGA results corroborate the good thermal stability. DSC analyses show that PBHTBT has Tg and Tm point, which mean PBHTBT is a crystalline material. The band gap was investigated by CV. The absorption spectra were analyzed via UV-Vis.
The application on solar cell of this polymer material was explored using this material as the active layer of solar cell.

並列關鍵字

photoelectric materials ； oxidation polymerization ； conjugated polymers ； Stille reaction

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