无机材料学报2024，Vol.39Issue(4)：359-366,中插1-中插2,10.DOI:10.15541/jim20230424
上转换发光纳米材料对钙钛矿太阳能电池迟滞效应和离子迁移动力学的影响
Influence of Upconversion Luminescent Nanoparticles on Hysteresis Effect and Ion Migration Kinetics in Perovskite Solar Cells
摘要
Abstract
Hysteresis effect greatly impacted performance and stability of perovskite solar cells.Ion migration and the resulting accumulation of interface ions were widely recognized as the most important origins.In this study,upconversion luminescent nanoparticles(UCNP)were used to modify the interface of the electron transport layer/perovskite active layer and the intrinsic perovskite active layer,and the effects of UCNP on the morphology,structure,spectral/optoelectronic properties,and ion migration kinetics of perovskite were systematically explored.The results indicated that the device with UCNP modified perovskite active layer has the best photoelectric conversion efficiency(PCE,16.27%)and significantly improves the hysteresis factor(HF,0.05).Furthermore,circuit switching transient optoelectronic technology was employed to investigate the ion migration kinetics without interference from photo-generated carriers,revealing the dual role of UCNP in suppressing ion migration and accumulation during the optoelectronic conversion process of perovskite solar cells.On the one hand,UCNP formed barrier layers that hinder ion accumulation.On the other hand,UCNP infiltrated into grain boundaries of perovskite phase during annealing,hindering ion migration and reducing the recovery voltage from 0.43 V to 0.28 V.The mechanism of carriers and ions interaction was explained based on the polarization-induced trap state model to declare the process of UCNP suppressing the hysteresis of perovskite photovoltaic devices.This work provides effective solution for regulating the hysteresis of perovskite solar cells.关键词
上转换发光纳米材料/钙钛矿太阳能电池/迟滞效应/离子迁移Key words
upconversion luminescent nanoparticles/perovskite solar cell/hysteresis effect/ion migration分类
化学化工引用本文复制引用
于嫚,高荣耀,秦玉军,艾希成..上转换发光纳米材料对钙钛矿太阳能电池迟滞效应和离子迁移动力学的影响[J].无机材料学报,2024,39(4):359-366,中插1-中插2,10.基金项目
国家自然科学基金(21903062,21973112) （21903062,21973112）
陕西省科学技术协会青年人才托举计划项目(20220462) （20220462）
国家级大学生创新创业训练计划项目(202311736016)National Natural Science Foundation of China(21903062,21973112) （202311736016）
Young Talent Fund of Association for Science and Technology in Shaanxi,China(20220462) （20220462）
National College Students'Innovation and Entrepreneurship Training Program(202311736016) （202311736016）
