摘要
本文使用两步法,通过控制PbI_(2)(DMSO)溶液的浓度制备了不同厚度的有机-无机杂化钙钛矿(MAPbI_(3))光吸收层薄膜,并组装了大面积基于碳电极且无空穴传输层的钙钛矿太阳能电池。对不同厚度MAPbI_(3)光吸收层薄膜的晶相、光吸收性质、表面形貌、元素组成进行分析,并进一步测试了基于MAPbI_(3)薄膜制备的钙钛矿太阳能电池的光伏性能。结果表明,MAPbI_(3)光吸收层薄膜厚度与PbI_(2)(DMSO)浓度呈正相关关系,浓度为1.3 mol/L的PbI_(2)溶液制备的MAPbI_(3)薄膜厚度约为350 nm,具有较好的结晶度和光吸收强度,且薄膜表面致密平整,无明显缺陷,基于350 nm MAPbI_(3)光吸收层的钙钛矿太阳能电池获得了8.48%的光电转换效率。
In this paper,organic-inorganic hybrid perovskite(MAPbI_(3)) optical absorption layer thin film with different thickness was prepared by controlling the concentration of PbI_(2)(DMSO)solution by two-step method,and a large area perovskite solar cell based on carbon electrode hole-free transport layer was assembled.The crystal phase,optical absorption properties,surface morphology and elemental composition of MAPbI_(3) optical absorption layer films with different thickness were analyzed,and the photovoltaic performance of perovskite solar cells prepared based on MAPbI_(3) film were further tested.The results show that the thickness of MAPbI_(3) photoabsorption layer is positively correlated with the concentration of PbI_(2)(DMSO).The thickness of MAPbI_(3) optical absorption layer prepared by 1.3 mol/L PbI_(2) solution is about 350 nm,which has good crystallinity and optical absorption intensity,and the surface of the film is compact and smooth without obvious defects.Finally,the perovskite solar cell based on 350 nm MAPbI_(3) optical absorption layer achieves 8.48%photoelectric conversion efficiency.
作者
楚树勇
张正国
刘海
CHU Shuyong;ZHANG Zhengguo;LIU Hai(Chemical Science and Engineering College,North Minzu University,Yinchuan 750021,China)
出处
《人工晶体学报》
CAS
北大核心
2022年第11期1936-1943,共8页
Journal of Synthetic Crystals
基金
中国科学院西部之光项目(XAB2020YW11)
北方民族大学青年人才科研启动项目(2019KYQD44)
宁夏青年科技托举人才项目(2019TJGC015)。
关键词
碳电极
钙钛矿
太阳能电池
无空穴传输层
光吸收层
光伏性能
carbon electrode
perovskite
solar cell
hole-free transport layer
optical absorption layer
photovolatic performance
