有机与杂化太阳能电池的界面调控与交流阻抗谱研究
发布时间：2018-11-22 07:13
【摘要】：有机聚合物太阳能电池由于其低成本、轻重量、可溶液加工以及可制备成柔性器件等优势,逐渐成为热点研究领域之一。然而与传统无机硅等电池器件相比,有机聚合物太阳能电池稳定性差、聚合物载流子迁移率低等,使光电转换效率较低,所以对有机太阳能电池修饰工艺和有机无机杂化太阳能电池应运而生。本文主要采用交流阻抗谱测试对有机与杂化太阳能电池进行了分析研究,通过分析聚合物光电器件的Cole-Cole图、Bode图、C-F特性和C-V特性,对太阳能电池器件的等效电路模型和载流子迁移率进行研究和分析。主要研究内容如下:对器件结构为ITO/P3HT:PCBM/Mo O3/Al和ITO/修饰层/P3HT:PCBM/Al的聚合物太阳电池进行修饰层作用研究,并用交流阻抗谱进行修饰器件与空白器件两类体系的介电性能研究。采用电化学沉积方法和蒸镀方法制备致密硫化银纳米薄膜,为了确定致密硫化银纳米薄膜的最佳制备工艺,本论文研究了不同电化学沉积条件及其表面活性剂(柠檬酸)和蒸镀工艺对薄膜形貌和晶体结构的影响,发现在沉积电压4 V、沉积时间3 min、p H=3且无柠檬酸的条件下和蒸镀条件下均可以获得结晶度高、表面质量好的硫化银纳米薄膜。在制备致密硫化银纳米薄膜的基础上,本论文制备了含有硫化银的杂化太阳能电池,并对器件结构为ITO/P3HT:Ag2S(电化学沉积)/Al和ITO/P3HT:Ag2S(蒸镀)/Al的杂化太阳能电池进行交流阻抗谱的测试研究,进而分析了这两种工艺条件下器件的介电响应。
[Abstract]:Organic polymer solar cells have become one of the hot research fields due to their advantages of low cost, light weight, solution processing and fabrication of flexible devices. However, compared with traditional inorganic silicon and other battery devices, organic polymer solar cells have poor stability and low polymer carrier mobility, resulting in lower photoelectric conversion efficiency. Therefore, the modification process of organic solar cells and organic and inorganic hybrid solar cells came into being. In this paper, the organic and hybrid solar cells are studied by means of AC impedance spectroscopy. The Cole-Cole, Bode, C-F and C-V characteristics of polymer photovoltaic devices are analyzed. The equivalent circuit model and carrier mobility of solar cell devices are studied and analyzed. The main contents are as follows: the effect of the modified layer on the polymer solar cells with ITO/P3HT:PCBM/Mo O3/Al and ITO/ P3HT:PCBM/Al structure is studied. The dielectric properties of modified devices and blank devices were studied by AC impedance spectroscopy. Dense silver sulfide nanocrystalline films were prepared by electrochemical deposition and evaporation. In order to determine the optimum preparation process of dense silver sulfide nanocrystalline films, In this paper, the effects of different electrochemical deposition conditions, surfactant (citric acid) and evaporation on the morphology and crystal structure of the films were studied. It was found that the deposition voltage was 4 V and the deposition time was 3 min,. Silver sulphide nanocrystalline films with high crystallinity and good surface quality can be obtained under the condition of no citric acid and evaporation. Based on the preparation of dense silver sulfide nanocrystalline thin films, hybrid solar cells containing silver sulfide were prepared in this paper. The electrochemical deposition (ITO/P3HT:Ag2S) / Al and ITO/P3HT:Ag2S (evaporation) / Al hybrid solar cells were measured by AC impedance spectroscopy, and the dielectric responses of the hybrid solar cells were analyzed.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM914.4
[Abstract]:Organic polymer solar cells have become one of the hot research fields due to their advantages of low cost, light weight, solution processing and fabrication of flexible devices. However, compared with traditional inorganic silicon and other battery devices, organic polymer solar cells have poor stability and low polymer carrier mobility, resulting in lower photoelectric conversion efficiency. Therefore, the modification process of organic solar cells and organic and inorganic hybrid solar cells came into being. In this paper, the organic and hybrid solar cells are studied by means of AC impedance spectroscopy. The Cole-Cole, Bode, C-F and C-V characteristics of polymer photovoltaic devices are analyzed. The equivalent circuit model and carrier mobility of solar cell devices are studied and analyzed. The main contents are as follows: the effect of the modified layer on the polymer solar cells with ITO/P3HT:PCBM/Mo O3/Al and ITO/ P3HT:PCBM/Al structure is studied. The dielectric properties of modified devices and blank devices were studied by AC impedance spectroscopy. Dense silver sulfide nanocrystalline films were prepared by electrochemical deposition and evaporation. In order to determine the optimum preparation process of dense silver sulfide nanocrystalline films, In this paper, the effects of different electrochemical deposition conditions, surfactant (citric acid) and evaporation on the morphology and crystal structure of the films were studied. It was found that the deposition voltage was 4 V and the deposition time was 3 min,. Silver sulphide nanocrystalline films with high crystallinity and good surface quality can be obtained under the condition of no citric acid and evaporation. Based on the preparation of dense silver sulfide nanocrystalline thin films, hybrid solar cells containing silver sulfide were prepared in this paper. The electrochemical deposition (ITO/P3HT:Ag2S) / Al and ITO/P3HT:Ag2S (evaporation) / Al hybrid solar cells were measured by AC impedance spectroscopy, and the dielectric responses of the hybrid solar cells were analyzed.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM914.4
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