利用吡啶添加剂提高钙钛矿太阳能电池的光伏性能(英)  

Improvement of The Performance of Planar Heterojunction Perovskite Solar Cells by Using Pyridine as Additive

作　　者：李志成 王亚凌[1,2] 杨银[1,2] 曹焕奇 秦文静[1,2] 杨利营[1,2] 纪伟伟[3,4] 印寿根[1,2] 

机构地区：[1]天津理工大学显示材料与光电器件教育部重点实验室,天津300384 [2]天津市光电显示材料与器件重点实验室、天津理工大学材料科学与工程学院,天津300384 [3]天津大学化工学院,天津300072 [4]中国电子科技集团第18研究所,天津300384

出　　处：《发光学报》2017年第11期1503-1509,共7页Chinese Journal of Luminescence

基　　金：国家自然科学基金(51402214,61504097);天津市自然科学基金(17JCYBJC21000,14JCYBJC42800);国家重点科学仪器设备发展项目(2014YQ120351);天津教委项目(20140423)资助~~

摘　　要：研究了吡啶作为添加剂对一步法制备甲胺铅碘钙钛矿太阳能电池光电性能的影响。利用SEM、AFM、XRD、UV-Vis、PL等手段研究了不同吡啶掺杂浓度对制备的CH_3NH_3Pb I_3薄膜的表面形貌、结晶度和光学性能的影响。研究结果表明:少量的吡啶掺杂可以提高钙钛矿薄膜的覆盖率及降低薄膜的表面粗糙度。当在CH_3NH_3Pb I_3前驱体溶液中添加体积分数为1%的吡啶时,制备的钙钛矿太阳能电池的能量转换效率达到7.33%,而未加吡啶的对比器件效率仅为1.01%。进一步添加吡啶会导致钙钛矿材料的降解。An efficient one-step solution method was demonstrated to prepare CH3NH3PbI3 perovskite solar cells by adding pyridine to the precursor solution. The film morphology,crystallinity,and optical properties of CH3NH3PbI3 perovskite films were investigated by SEM,AFM,XRD,UV-Vis and PL. The results show that the perovskite film properties（ coverage of perovskite films and surface morphology） can be manipulated by incorporating a small amount of pyridine.The adding of pyridine is helpful to obtain a smooth,continuous and dense morphology. With the optimized pyridine volume fraction of 1%,the power conversion efficiency of 7. 33% with Jscof 14. 64 mA/cm^2,Vocof 0. 82 V,and FF of 0. 61 is obtained for the planar device structure. By contrast,the power conversion efficiency of the device without pyridine is only 1. 01%. However,the further increase of the content of pyridine can result in the decomposition of perovskite,because the pyridine can easily form complexes with perovskite and induce the perovskite dissociation.

关 键 词：钙钛矿太阳能电池 添加剂 形貌 吡啶 

分 类 号：TM914.4[电气工程—电力电子与电力传动]