钙钛矿纳米线无模板定向成膜及其线偏振发光研究

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Template-freeOrderedPerovskiteNanowireFilmsfor LinearlyPolarizedLuminescence

2.i-Lab，Suzhou InstituteofNano-TechandNano-Bionics，ChineseAcademyofSciences，Suzhou215123，China;

3.CollegeofMaterialsScienceandEngineering，Hohai University，Nanjing2111oo，China） *Corresponding Authors，E-mail：pxwang2020@sinano.ac.cn; qchen2011@sinano.ac.cn

Abstract：With intrinsic linearly polarized luminescence properties，perovskite nanowires have atracted widespreadattention.However，in theabsence of template-asisted alignmentduring film formation，perovskitenanowiresaredifculttoachieveuniformorientation，therebylimitingtheirpotentialapplicationsinlinearlypolarizedluminescence.In this work，weaddress the challenge of template-free oriented film formationof perovskitenanowires by combining the regulation of their aggegation structures in suspension with the scalable blade coating process.By optimizingthe suspension concentration andthe shear force during blade coating，we haveachieved perovskite nanowire films with a photoluminescence polarization degree of 66.7% and an electroluminescence polarization degree of （20 27.5% . This study presents a novel approach for the large-scale and cost-effctive fabrication of high-performance linearly polarized luminescent devices.

Key words：metal halideperovskites；semiconducting nanowires；bladecoating；orientationoptimization；linearly polarized light-emitting diode

1引言

金属卤化物钙钛矿材料因其溶液加工的兼容性、低廉的成本、连续可调的半导体带隙、高的缺陷容忍度以及出色的量子产率等显著优势[-2]，成为下一代显示技术的候选发光材料之一。（剩余14710字）