發(fā)布時間：2018-01-29 07:16

  本文關鍵詞： 聚合物太陽能電池 本體異質(zhì)結 苯并二噻吩 硫?qū)僭?寡聚噻吩　出處：《北京交通大學》2017年碩士論文　論文類型：學位論文

【摘要】：與傳統(tǒng)的無機太陽能電池相比,有機太陽能電池具有成本低、重量輕、柔性和可大面積制造等優(yōu)點。對光活性層材料的改進,尤其是對共軛聚合物材料結構和性能的改進是目前聚合物太陽能電池的研究熱點之一。為了探究共軛聚合物材料對光伏電池性能的影響,本文采用給體-受體組合的分子策略制備了兩個系列八種聚合物太陽能電池給體材料。其中,以苯并二噻吩為給體單元,呋喃(噻吩/硒吩)并異苯并噻吩二酮為受體單元所合成的聚合物材料的光電特性與受體單元中所含有不同硫?qū)僭佑嘘P。研究和探討了雜原子對聚合物構型,聚合物的可加工性,電學性能,光學性能,薄膜形貌,光電轉(zhuǎn)換性能等方面的影響。在實驗中,我們還發(fā)現(xiàn)通過添加不同比例的1,8-二碘辛烷可以對其薄膜形貌產(chǎn)生不同程度的優(yōu)化,光電轉(zhuǎn)換效率顯示出很大的差別。對于苯并二噻吩與苯并二噻吩二酮共聚的聚合物材料,在添加0.5%的1,8-二碘辛烷后,所制備的光伏器件的最高光電轉(zhuǎn)換效率達到了 9%。此外,本文還研究了以苯并二噻吩二酮為受體單元,不同的寡聚噻吩為給體單元的聚合物材料中的噻吩數(shù)目和鏈接方式對共軛聚合物光電性能的影響。通過對電學性能,光學性能以及光電轉(zhuǎn)換性能的比較,發(fā)現(xiàn)當n=2時,相應的聚合物具有最佳的光電轉(zhuǎn)換性能。
[Abstract]:Compared with traditional inorganic solar cells, organic solar cells have the advantages of low cost, light weight, flexibility and large area fabrication. Especially the improvement of the structure and properties of conjugated polymer materials is one of the hot spots of polymer solar cells. In order to explore the impact of conjugated polymer materials on the performance of photovoltaic cells. In this paper, two series of eight kinds of polymer solar cell donor materials were prepared by using donor-receptor combination molecular strategy, in which benzodithiophene was used as donor unit. The photoelectric properties of polymer materials synthesized by furan (thiophene / selenophene) and isobenzothiophene diketone are related to the different sulfur atoms in the receptor unit. The influences of processability, electrical properties, optical properties, film morphology, photoelectric conversion properties and so on. In the experiment, we also found that by adding different proportion of 1. 8-diiodooctane can optimize the morphology of the films to varying degrees, and the photoelectric conversion efficiency is very different. For the polymeric materials of benzodithiophene and benzodithiophene diketone copolymerization. The maximum photovoltaic conversion efficiency of the photovoltaic device was up to 9 after the addition of 0.5% (1 / 8-diiodooctane). In addition, the benzodithiophene diketone was used as the receptor unit. The effects of thiophene number and linking mode on the photoelectric properties of conjugated polymers with different oligomeric thiophene as donor units. The electrical, optical and photoelectric properties of the conjugated polymers were compared. It is found that when n = 2:00, the corresponding polymer has the best photoelectric conversion performance.
【學位授予單位】：北京交通大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TM914.4

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本文編號：1472869