摘要
无机铯铅卤素钙钛矿具有出色的光学和电子性能,已发展成为现代光电子纳米器件的新兴材料。本文配置溶有铯铅碘钙钛矿(CsPbI3)与聚偏氟乙烯(Polyvinylidene difluoride,PVDF)的前驱体溶液,采用静电纺丝方法,原位合成CsPbI3/PVDF复合纤维。该纤维表面光滑,直径约为100 nm,内部均匀分布着平均直径约为20 nm的CsPbI3纳米晶粒。采用CsPbI3/PVDF复合纤维构筑的压电纳米发电机的开路电压(Voc)为9.18 V,短路电流密度为97.72 nA/cm2,输出电流Isc居于中等水平。研究表明,CsPbI3/PVDF复合纤维是构筑压电纳米发电机的可选材料,在机械能量收集和运动传感技术中具有广阔的应用前景。
The inorganic cesium lead halide perovskite has become an emerging material for modern photoelectron nano-devices due to its excellent optical and electronic properties.In this work,the CsPbI3/PVDF composite fiber is synthesized with the in-situ growth method via electrospinning.The electrospun fiber is about 100 nm in diameter with smooth surface.Meanwhile,CsPbI3 nanocrystals(NCs)with a mean diameter of about 20 nm are distributed inside the fiber matrix evenly.The open circuit voltage(Voc)of the CsPbI3/PVDF composite fiber based piezoelectric nanogenerator(PENG)is 9.18 V,and the short circuit current density(the density of Isc)is 97.72 nA/cm2.This work demonstrates that CsPbI3/PVDF composite fiber is an optional alternative material for constructing piezoelectric nanogenerator and has broad application capability in mechanical energy collection and motion sensing technology.
作者
陈慧颖
刘成
杨涛
侯新梅
CHEN Huiying;LIU Cheng;YANG Tao;HOU Xinmei(Collaborative Innovation Center of Steel Technology,University of Science and Technology Beijing,Beijing 100083,China;Technical Center of Maanshan Iron&Steel Co.,Ltd.,Maanshan 243003,China)
出处
《辽宁科技大学学报》
CAS
2021年第1期43-49,共7页
Journal of University of Science and Technology Liaoning
基金
国家自然科学基金(52025041、51974021、51902020)
中央高校基本业务科研经费(FRF-TP-18-045A1、FRF-TP-19-004B2Z)。
