新型太阳能电池的制备及器件物理研究
发布时间：2019-06-07 19:37
【摘要】：有机/无机杂化钙钛矿太阳电池作为一种极具潜力的光伏技术,具有制备工艺简单、成本低廉、效率高等诸多优势,因而受到广泛的关注。而有机薄膜太阳能电池和聚合物太阳能电池在制备大面积、轻质、柔性的器件方面具有独特的优势,同样备受关注。本论文研究内容主要包括以下几个方面:1.基于溶液法制备了反置结构MAPb I3钙钛矿太阳能电池,并对其稳态电荷传输特性等相关的光电特性进行了研究。通过调整不同的MAPb I3薄膜厚度,系统地研究了钙钛矿太阳能电池中的载流子迁移率、缺陷密度和电荷复合等性能参数。研究结果表明,在MAPb I3太阳能电池中载流子迁移率可能不是光电流损失的主要限制因素;缺陷态是影响器件性能的重要原因。2.合成Zn O纳米粒子,将其作为电子传输层/空穴阻挡层,并应用于PTB7-Th:PC71BM有机本体异质结太阳能电池中。研究了Zn O纳米粒子的分散剂、粒子层厚度对器件的效率及稳定的影响。研究表明,Zn O纳米粒子对器件效率及稳定性的影响显著。最终在最优化的条件下我们将PTB7-Th:PC71BM太阳能电池的效率,由8.4%提升到了9.2%。3.比较研究了三种不同太阳能电池器件PBDB-T:ITIC、PBDB-T:P(NDI2OD-T2)、PBDB-T:PC71BM的载流子迁移率的温度响应和双分子复合机制。结果表明,即便在载流子不平衡的情况下,PBDB-T:ITIC太阳能电池依然可以达到PCE接近10%的高效率,这主要归功于其具有较高的Jsc,而且器件的光电特性不仅仅与其传输性能相关,还与其电荷复合强度息息相关。最终得出的结论,迁移率的平衡性在一定程度上并不是影响非富勒烯有机太阳能电池器件效率的决定因素。如果想进一步提高非富勒烯有机太阳能电池的效率,可以从抑制双分子复合等方面考虑。
[Abstract]:As a potential photovoltaic technology, organic / inorganic hybrid perovskite solar cells have many advantages, such as simple preparation process, low cost, high efficiency and so on, so they have attracted extensive attention. Organic thin film solar cells and polymer solar cells have unique advantages in preparing large area, light and flexible devices, and have also attracted much attention. The research contents of this paper mainly include the following aspects: 1. MAPb I _ 3 perovskite solar cells with reverse structure were prepared based on solution method, and the related photoelectric characteristics, such as steady-state charge transfer characteristics, were studied. The carrier mobility, defect density and charge recombination in perovskite solar cells were systematically studied by adjusting the thickness of MAPb I3 thin films. The results show that carrier mobility may not be the main limiting factor of photocurrent loss in MAPb I 3 solar cells, and defect state is an important reason affecting device performance. 2. Zn O nanoparticles were synthesized as electron transport layer / hole barrier layer and applied to PTB7-Th:PC71BM organic bulk heterojunction solar cells. The effects of dispersion agent and particle layer thickness on the efficiency and stability of Zn O nanoparticles were studied. The results show that, Zn O nanoparticles have a significant effect on the efficiency and stability of the device. Finally, under the optimized conditions, we increased the efficiency of PTB7-Th:PC71BM solar cells from 8.4% to 9.2%. The temperature response and bimolecule recombination mechanism of carrier mobility of three different solar cell devices PBDB-T:ITIC,PBDB-T:P (NDI2OD-T2) and PBDB-T:PC71BM were compared and studied. The results show that even in the case of carrier imbalance, PBDB-T:ITIC solar cells can still achieve a high efficiency of PCE of nearly 10%, which is mainly due to its high Jsc,. Moreover, the photoelectric characteristics of the device are not only related to its transmission performance, but also related to its charge recombination intensity. Finally, it is concluded that the balance of mobility is not the decisive factor affecting the device efficiency of non-fullerene organic solar cells to a certain extent. If we want to further improve the efficiency of non-fullerene organic solar cells, we can consider the inhibition of bimolecules and so on.
【学位授予单位】：新疆大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM914.4
本文编号：2495032
[Abstract]:As a potential photovoltaic technology, organic / inorganic hybrid perovskite solar cells have many advantages, such as simple preparation process, low cost, high efficiency and so on, so they have attracted extensive attention. Organic thin film solar cells and polymer solar cells have unique advantages in preparing large area, light and flexible devices, and have also attracted much attention. The research contents of this paper mainly include the following aspects: 1. MAPb I _ 3 perovskite solar cells with reverse structure were prepared based on solution method, and the related photoelectric characteristics, such as steady-state charge transfer characteristics, were studied. The carrier mobility, defect density and charge recombination in perovskite solar cells were systematically studied by adjusting the thickness of MAPb I3 thin films. The results show that carrier mobility may not be the main limiting factor of photocurrent loss in MAPb I 3 solar cells, and defect state is an important reason affecting device performance. 2. Zn O nanoparticles were synthesized as electron transport layer / hole barrier layer and applied to PTB7-Th:PC71BM organic bulk heterojunction solar cells. The effects of dispersion agent and particle layer thickness on the efficiency and stability of Zn O nanoparticles were studied. The results show that, Zn O nanoparticles have a significant effect on the efficiency and stability of the device. Finally, under the optimized conditions, we increased the efficiency of PTB7-Th:PC71BM solar cells from 8.4% to 9.2%. The temperature response and bimolecule recombination mechanism of carrier mobility of three different solar cell devices PBDB-T:ITIC,PBDB-T:P (NDI2OD-T2) and PBDB-T:PC71BM were compared and studied. The results show that even in the case of carrier imbalance, PBDB-T:ITIC solar cells can still achieve a high efficiency of PCE of nearly 10%, which is mainly due to its high Jsc,. Moreover, the photoelectric characteristics of the device are not only related to its transmission performance, but also related to its charge recombination intensity. Finally, it is concluded that the balance of mobility is not the decisive factor affecting the device efficiency of non-fullerene organic solar cells to a certain extent. If we want to further improve the efficiency of non-fullerene organic solar cells, we can consider the inhibition of bimolecules and so on.
【学位授予单位】：新疆大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM914.4
【参考文献】
相关期刊论文 前1条
1 李永舫;;聚合物太阳能电池高效共轭聚合物给体和富勒烯受体光伏材料[J];高分子通报;2011年10期
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