电纺SnO_(2)∶PVP复合纳米线/带制备及其在钙钛矿太阳能电池中的应用  

Preparation of Electrospun SnO_(2)∶PVP Composite Nanowires/Nanobelts and Their Application in Perovskite Solar Cells

作　　者：韩帅 孙钦军[1,3] 吕红燕 范雪婷 高利岩[1] 郝玉英[2,3] Han Shuai;Sun Qinjun;LüHongyan;Fan Xueting;Gao Liyan;Hao Yuying(School of Physics,Taiyuan University of Technology,Taiyuan 030024,China;School of Electronic Information and Optical Engineering,Taiyuan University of Technology,Taiyuan 030024,China;Key Lab of Advanced Transducers and Intelligent Control System of Ministry of Education,Taiyuan University of Technology,Taiyuan 030024,China)

机构地区：[1]太原理工大学物理学院,太原030024 [2]太原理工大学电子信息与光学工程学院,太原030024 [3]太原理工大学新型传感与智能控制教育部重点实验室,太原030024

出　　处：《微纳电子技术》2023年第11期1736-1745,共10页Micronanoelectronic Technology

基　　金：国家自然科学基金项目(62074108);山西省科技重大专项项目(20201101012);山西省平台基地专项(201605D131038);山西省基础研究项目(20210302124094,20210302124163,20210302124629,20210302124392);区域创新与发展联合基金项目(U21A20102);山西浙大先进材料与化学工程研究所基金项目(2022SX-TD019)。

摘　　要：利用静电纺丝技术制备SnO_(2)∶聚乙烯吡咯烷酮(PVP)复合纳米线(NW)和纳米带(NB),然后将其应用到钙钛矿太阳能电池(PSC)来提高器件性能。首先利用静电纺丝和高温氧化制备出表面光滑、分布均匀、覆盖率可控的SnO_(2)∶PVP NW,随后通过溶剂处理展宽得到SnO_(2)∶PVP NB。分别将其作为电子传输层应用于钙钛矿太阳能电池,器件结构为氧化铟锡(ITO)/SnO_(2)/SnO_(2)∶PVP NW(NB)/FAx MA1-xPbIyCl3-y/Spiro-OMeTAD/Ag。研究发现,在纺丝接收时间70 s内,覆盖率随接收时间线性增加。与参考器件相比,覆盖率31%的SnO_(2)∶PVP NW加入钙钛矿太阳能电池的光电转换效率(PCE)基本没有变化。将溶剂处理后得到的SnO_(2)∶PVP NB加入钙钛矿太阳能电池,其器件的PCE从18.52%提高到20.96%。同时,由于PVP对钙钛矿具有良好的钝化作用,器件的稳定性也得到较大的改善,12天后归一化效率仍然保持在约90%。SnO_(2)∶polyvinyl pyrrolidone(PVP)composite nanowires(NWs)and nanobelts(NBs)were prepared by electrospinning technology and then applied to perovskite solar cells(PSCs)to improve the performance of the devices.SnO_(2)∶PVP NWs with smooth surface,uniform distribution and controllable coverage rate were prepared by electrostatic spinning and high temperature oxidation.Then SnO_(2)∶PVP NBs were obtained by solvent treatment broadening.They were respectively applied to perovskite solar cells as electron transport layers.And the device structure is indium tin oxide(ITO)/SnO_(2)/SnO_(2)∶PVP NWs(NBs)/FAx MA1-xPbIyCl3-y/Spiro-OMeTAD/Ag.It is found that the coverage rate increases linearly with the receiving time within 70 s of spinning reception time.Compared to reference devices,the perovskite solar cells with SnO_(2)∶PVP NWs of 31%coverage rate show little change in photoelectric conversion efficiency(PCE).The PCE of the perovskite solar cell with SnO_(2)∶PVP NBs increases from 18.52%to 20.96%.Meanwhile,due to the good passivation effect of PVP on perovskite,the stability of the device is greatly improved,and the normalized efficiency remains at about 90%after 12 days.

关 键 词：纳米线 纳米带 钙钛矿太阳能电池(PSC) 静电纺丝 纳米材料 复合材料 

分 类 号：TB383[一般工业技术—材料科学与工程] TM914.4[电气工程—电力电子与电力传动]