1. 毕业设计（论文）的内容和要求
本课题将制备Br元素掺杂CH3NH3PbI3钙钛矿太阳能电池。
通过在PbI2前驱体溶液中，加入少量的PbBr2，制备出铅层，最终再使用CH3NH3I（MAI）前驱体溶液制备出含有Br元素的CH3NH3PbI3钙钛矿太阳能电池。
通过控制铅溶液中的I/Br比，制备出含有不同Br元素量的CH3NH3PbI3钙钛矿太阳能电池，研究Br元素掺杂量对于钙钛矿薄膜形貌的影响，太阳能电池器件性能的影响。
2. 参考文献
根据毕业要求指点10.3，毕设期间要进行研究现状调查与总结，要求在开题报告及毕业设计（论文）中涉及的英文文献不少于30篇，其中英文文献不少于5篇，1篇英文文献要翻译为中文。
以下是与本课题相关的部分文献列表：（提供适当参考文献，学生自己按需补充）[1] J. Wei, Q. Zhao, H. Li, C.L. Shi, J.J. Tian, G.Z. Cao, D.P. Yu, Perovskite solar cells:Promise of photovoltaics, Sci. Sin. Tech. 44 (2014) 801-821.[2] M.A. Green, E.D. Dunlop, D.H. Levi, J. Hohl-Ebinger, M. Yoshita, A.W.Y. Ho-Baillie, Solar cell efficiency tables (Version 54), Prog. Photovoltaics 27 (2019) 565-575.[3] J. Cui, H.L. Yuan, J.P. Li, X.B. Xu, Y. Shen, H. Lin, M.K. Wang, Recent progress in efficient hybrid lead halide perovskite solar cells, Sci. Technol. Adv. Mater. 16 (2015) 036004.[4] Z.L. Zhang, B.Q. Men, Y.F. Liu, H.P. Gao, Y.L. Mao, Effects of precursor solution composition on the performance and I-V hysteresis of perovskite solar cells based on CH3NH3PbI3-xClx, Nanoscale. Res. Lett. 12 (2017) 84.[5] A. Kojima, K. Teshima, Y. Shirai, T. Miyasaka, Organometal halide perovskites as visible-light sensitizers for photovoltaic cells, J. Am. Chem. Soc. 131 (2009) 6050-6051.[6] Y.H. Tang, H.F Yang., X.G. Huang, L.X. Wang, Q.T. Zhang, S.W. Or, Low-pressure assisted solution synthesis of CH3NH3PbI3-xClx perovskite solar cells, Ceram. Int. 44 (2018) 11603-11609.[7] C. Wehrenfennig, M. Liu, H.J. Snaith, M.B. Johnston, L.M. Herz, Charge-carrier dynamics in vapour-deposited films of the organolead halide perovskite CH3NH3PbI3xClx, Energ. Environ. Sci. 7 (2014) 2269-2275.[8] G. Xing, N. Mathews, S. Sun, S.S. Lim, Y.M. Lam, M. Graetzel, S. Mhaisalkar, T.C. Sum, Long-range balanced electron- and hole-transport lengths in organic-inorganic CH3NH3PbI3, Science 342 (2013) 344-347.[9] W.S. De, J. Holovsky, S.J. Moon, P. Loeper, B. Niesen, M. Ledinsky, F.J. Haug, J.H. Yum, C. Ballif, Organometallic Halide Perovskites: Sharp Optical Absorption Edge and Its Relation to Photovoltaic Performance, J. Phys. Chem. Lett. 5 (2014) 1035-1039.[10] M.M. Lee, J. Teuscher, T. Miyasaka, T.N. Murakami, H.J. Snaith, Efficient hybrid solar cells based on meso-superstructured organometal halide perovskites, Science 338 (2012) 643-647.[11] M. Liu, M.B. Johnston, H.J. Snaith, Efficient planar heterojunction perovskite solar cells by vapour deposition, Nature 501 (2013) 395-398.[12] J.H. Im, C.R. Lee, J.W. Lee, S.W. Park, N.G. Park, 6.5% efficient perovskite quantum-dot-sensitized solar cell, Nanoscale 3 (2011) 4088-4093.[13] U. Bach, D. Lupo, P. Comte, J.E. Moser, F. Weissortel, J. Salbeck, H. Spreitzer, M. Graetzel, Solid-state dye-sensitized mesoporous TiO2 solar cells with high photon-to-electron conversion efficiencies, Nature 395 (1998) 583-585.[14] M.C. Wu, S.H. Chan, M.H. Jao, W.F. Su, Enhanced short-circuit current density of perovskite solar cells using Zn-doped TiO2 as electron transport layer, Sol. Energ. Mat. Sol. C. 157 (2016) 447-453.[15] W.S. Yang, J.H. Noh, N.J. Jeon, Y.C. Kim, S. Ryu, J. Seo, S.I. Seok, High-performance photovoltaic perovskite layers fabricated through intramolecular exchange, Science 348 (2015) 1234-1237.
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