摘要
氧气氛下的器件陈化对钙钛矿光伏电池的性能有显著影响。本文研究了通过溶液法组装的溴铅甲胺(MAPbBr3)电池的性能,其中致密的和介孔的Ti O2作为电子传输层,Spiro-OMeTAD作为空穴传输层。将MAPbBr3钙钛矿太阳能电池置于湿度<10%的氧气氛暗箱中不同时间,探究O2对钙钛矿薄膜缺陷的钝化影响,并且采用瞬态光电压(TPV)技术分析陈化前后器件在不同光照时间下的离子迁移。结果表明,陈化处理后,基于MAPbBr3的器件性能得到明显改善,光电转换效率从4.18%提高到6.73%。这种原因可能归结于钙钛矿材料的缺陷态密度降低,因为在黑暗条件下,O2在MAPbBr3钙钛矿太阳能电池中进行扩散,从而起到钝化缺陷的作用。
Device aging under oxygen atmosphere has a significant impact on the performance of perovskite photovoltaic cells.This article investigates the performance of brominated lead methylamine(MAPbBr3)batteries assembled by solution method,with dense and mesoporous TiO2 as the electron transport layer and Spiro OMeTAD as the hole transport layer.The MAPbBr3 perovskite cell is placed in an oxygen atmosphere dark condition with a humidity of<10%for different times to explore the influence of O2 on the passivation of perovskite film defects,and the transient photovoltage(TPV)technology is used to analyze the ion migration of the device before and after aging under different illumination times.The results show that after aging treatment,the performance of devices based on MAPbBr3 has been significantly improved,and the photoelectric conversion efficiency increases from 4.18%to 6.73%.This reason may be attributed to the decrease in defect density of perovskite materials,as under dark conditions,O2 diffuses in MAPbBr3 perovskite solar cells,thereby passivating defects.
作者
苏丽君
陈笑然
李博斐
李瑞环
魏铭蒋
翟瑞
Su Lijun;Chen Xiaoran;Li Bofei;Li Ruihuan;Wei Mingjiang;Zhai Rui(Department of Materials and Chemical Engineering,Taiyuan University,Taiyuan Shanxi 030032,China)
出处
《山西化工》
CAS
2024年第1期3-6,10,共5页
Shanxi Chemical Industry
基金
山西省回国留学人员科研资助项目(2022-183)
山西省自然科学基金青年项目(202203021222414)
山西省高等学校科技创新计划项目(2022L584)
山西省大学生创新创业训练计划项目(TYX2023023)。
