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材料导报  2022, Vol. 36 Issue (2): 21010190-6    https://doi.org/10.11896/cldb.21010190
  无机非金属及其复合材料 |
一种咪唑基离子液体钝化制备的高效反式钙钛矿太阳能电池
张尧, 毕恩兵, 茹鹏斌, 陈汉
上海交通大学材料科学与工程学院金属基复合材料国家实验室,上海 200240
Surface Passivation of Perovskite Film Using Imidazole-based Ionic Liquid for Efficient Inverted Solar Cells
ZHANG Yao, BI Enbing, RU Pengbin, CHEN Han
State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240,China
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摘要 有机-无机杂化卤素钙钛矿晶体表面的缺陷浓度远高于其内部,严重影响了钙钛矿太阳能电池的光电转化效率和稳定性。通过开发多功能钝化剂可有效降低钙钛矿表面的缺陷密度,是进一步提高钙钛矿薄膜质量的一种有效途径。本研究中,我们首次应用了一种多功能的钝化材料: 1-腈丙基-3-甲基咪唑氯盐,将其涂敷到钙钛矿表面可以同时钝化铅离子和碘离子缺陷,使载流子寿命延长两倍以上。最终,通过钝化甲脒铅碘钙钛矿表面,反式钙钛矿太阳能电池开路电压提高了40 mV,光电转化效率达到22.53%。同时,这种离子液体钝化处理使得太阳能电池的稳定性有所提升,封装器件在空气中60 ℃和AM1.5G标准光照条件下以最大功率点效率追踪500 h,效率仍保持在90%以上。
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张尧
毕恩兵
茹鹏斌
陈汉
关键词:  钙钛矿太阳能电池  缺陷  离子液体  咪唑  钝化    
Abstract: Since the defect on the surface of the halide perovskite crystal is more prevalent than that in the internal lattice, it seriously affects the improvement of the photoelectric conversion efficiency and stability of the perovskite solar cells. It is an effective way to further improve the quality of perovskite by reducing the density of defects on the surface of perovskite by developing a multifunctional passivator. In this paper, we first applied a multi-functional passivation material: 1-cyanopropyl-3-methylimidazole chloride salt. Coating it on the perovskite can simultaneously passivate the lead ion defects and the iodide ion defects on the surface of the perovskite, and increase the carrier lifetime by more than twice. Through this method, the photoelectric conversion efficiency of the perovskite solar cells achieved 22.53% with 40 mV enhancement on the open circuit voltage. The ionic liquid passivation could also improve the stability of solar cells. Encapsulated devices retained more than 90% of their initial efficiency after 500 h of maximum power point operation under AM1.5G illumination at 60 ℃ in air.
Key words:  perovskite solar cells    defect    ionic liquid    imidazole    passivation
出版日期:  2022-01-25      发布日期:  2022-01-26
ZTFLH:  TM914  
基金资助: 上海市自然科学基金(17ZR1414800; 20ZR1424900); 国家自然科学基金(51902198); 国家创新人才博士后计划与国家博士后基金(BX201700302; 2018M640388)
通讯作者:  Chen.han@sjtu.edu.cn;Enbing.Bi@hotmail.com21010190-1   
作者简介:  张尧,2017年6月毕业于哈尔滨工业大学,材料科学与工程专业,获得学士学位。于2018年9月进入上海交通大学攻读硕士学位,研究方向为钙钛矿太阳能电池。陈汉,博士,上海交通大学副教授。2005年开始在日本福井大学从事电化学方面研究,2010年获得电化学博士学位;2010年开始在日本国立物质材料研究所从事有机/无机太阳电池方面的研究。2012年至今在上海交通大学材料科学与工程学院从事有机/无机太阳电池方面的研究。其主要研究工作包括新型太阳电池工作机理、新材料和大面积制膜方法的开发、高效率器件的制备等。在Nature、Science、Joule、Nature Communications、Advanced Materials、Energy and Environmental Science 等国际著名期刊发表SCI 学术论文50多篇。毕恩兵,工学博士,毕业于上海交通大学,主要从事无机、有机半导体物理和太阳能电池器件的研究。曾在日本物质材料研究所和美国托莱多大学进行访问和博士后研究。在Science 、Nature、Energy、 Joule、Nature Communications、Energy and Environmental Science 、 Advanced Energy Materials等国际著名刊物上发表学术论文30余篇,申请专利近30项。
引用本文:    
张尧, 毕恩兵, 茹鹏斌, 陈汉. 一种咪唑基离子液体钝化制备的高效反式钙钛矿太阳能电池[J]. 材料导报, 2022, 36(2): 21010190-6.
ZHANG Yao, BI Enbing, RU Pengbin, CHEN Han. Surface Passivation of Perovskite Film Using Imidazole-based Ionic Liquid for Efficient Inverted Solar Cells. Materials Reports, 2022, 36(2): 21010190-6.
链接本文:  
http://www.mater-rep.com/CN/10.11896/cldb.21010190  或          http://www.mater-rep.com/CN/Y2022/V36/I2/21010190
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