全文总字数：3714字
1. 毕业设计（论文）的内容和要求
本论文以钙钛矿蓝光发光二极管为研究背景，通过引入阳离子表面活性剂添加剂，优化氯溴掺杂的钙钛矿蓝光器件性能，同时研究不同类添加剂对氯溴掺杂蓝光器件相分离现象的影响。
本论文课题名称为阳离子表面活性剂对混合卤素钙钛矿性能影响的研究，根据文献报道，表面活性剂显著提高混合卤素钙钛矿薄膜的均匀性，进而提升器件性能，本课题拟引入阳离子表面活性剂类添加剂，通过优化比例，浓度，退火温度及转速等条件，并通过EQE测试系统测试器件性能，制备出高效的钙钛矿蓝光器件。
同时改变阳离子表面活性剂添加剂种类，分别制备最优器件，分析不同阳离子表面活性剂添加剂对氯溴掺杂钙钛矿蓝光器件相分离现象的影响。
2. 实验内容和要求
实验内容及要求包括以下几个方面：（1）含有和不含阳离子表面活性剂氯溴掺杂钙钛矿蓝光钙钛矿薄膜与器件的制备。
（2）通过SEM，AFM，荧光光谱仪等设备对薄膜进行表征，通过EQE测试系统对器件性能进行表征。
（3）优化制备不同种类阳离子表面活性剂的蓝光器件。
3. 参考文献
1. Yi, C. et al. Intermediate-phase-assisted low-temperature formation of γ-CsPbI3 films for high-efficiency deep-red light-emitting devices. Nat. Commun. 11, 4736 (2020).2. Cheng, L. et al. Multiple-Quantum-Well Perovskites for High-Performance Light-Emitting Diodes. Adv. Mater. 32, 1904163 (2020).3. Cao, Y. et al. Perovskite light-emitting diodes based on spontaneously formed submicrometre-scale structures. Nature 562, 249253 (2018).4. Lin, K. et al. Perovskite light-emitting diodes with external quantum efficiency exceeding 20 per cent. Nature 562, 245248 (2018).5. Chiba, T. et al. Anion-exchange red perovskite quantum dots with ammonium iodine salts for highly efficient light-emitting devices. Nat. Photon. 12, 681687 (2018).6. Chen, Z. et al. High-performance color-tunable perovskite light emitting devices through structural modulation from bulk to layered film. Adv. Mater.29, 1603157 (2017).7. Wang, Q., Ren, J., Peng, X.-F., Ji, X.-X. Yang, X.-H. Efficient sky-blue perovskite light-emitting devices based on ethylammonium bromide induced layered perovskites. ACS Appl. Mater. Interfaces 9, 2990129906 (2017).8. Tang, X. et al. Local observation of phase segregation in mixed-halide perovskite. Nano Lett. 18, 21722178 (2018).9. Vashishtha, P. Halpert, J. E. Field-driven ion migration and color instability in red-emitting mixed halide perovskite nanocrystal light-emitting diodes. Chem. Mater. 29, 59655973 (2017).10. Saidaminov, M. I. et al. Suppression of atomic vacancies via incorporation of isovalent small ions to increase the stability of halide perovskite solar cells in ambient air. Nat. Energy 3, 648654 (2018).11. Leijtens, T. et al. Towards enabling stable lead halide perovskite solar cells; interplay between structural, environmental, and thermal stability. J. Mater. Chem. A 5, 1148311500 (2017).12. Shang, Y., Li, G., Liu, W. Ning, Z. Quasi-2D inorganic CsPbBr3 perovskite for efficient and stable light-emitting diodes. Adv. Funct. Mater. 28, 1801193 (2018).13. Chen, P. et al. Charge-transfer versus energy- transfer in quasi-2D perovskite light-emitting diodes. Nano Energy 50, 615622 (2018).14. Chang, J. et al. Enhanced performance of red perovskite light-emitting diodes through the dimensional tailoring of perovskite multiple quantum wells. J. Phys. Chem. Lett. 9, 881886 (2018).15. Kumawat, N. K. et al. Band gap tuning of CH3NH3Pb(Br1xClx)3 hybridperovskite for blue electroluminescence. ACS Appl. Mater. Interfaces 7, 1311913124 (2015).16. Aditya Sadhanala et al. Blue-Green Color Tunable Solution Processable Organolead ChlorideBromide Mixed Halide Perovskites for Optoelectronic Applications. Nano Lett. 15, 60956101 (2015)
4. 毕业设计（论文）计划
毕业设计进程安排第1-4周：阅读文献，了解本组前期工作，并深入了解本领域方法并分析第5-9周：制备并表征钙钛矿薄膜性能第9-15周：优化器件结构与条件。
第16-18周：整理论文，准备答辩
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