Directional emissions from perovskite nanocrystals thin film enabled by metasurface integration through one step spin-coating process
作者机构：State Key Laboratory of High Power Semiconductor LaserSchool of physicsChangchun University of Science and TechnologyChangchun 130022China Department of Electrical and Electronic EngineeringSouthern University of Science and TechnologyShenzhen 518055China Photonics LaboratoryDepartment of Microtechnology and NanoscienceChalmers University of TechnologyGöteborgSE-41296Sweden
出 版 物：《Nano Research》 (纳米研究（英文版）)
年 卷 期：2023年第16卷第5期
页 面：7646-7653页
核心收录：
学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学]
基 金：the National Natural Science Foundation of China(Nos.11804335,61904017,12074045,and 62174079) Science,Technology and Innovation Commission of Shenzhen Municipality(Projects Nos.JCYJ20210324120204011 and KQTD2015071710313656) P.N.N.acknowledges the support of H2020 Research and Innovation Program(Marie Skłodowska-Curie Individual Fellowship Agreement No.101027383)
主 题：solid state light source perovskite light-emitting diodes(LEDs) metasurface integrations on-chip beam shaping beam steering
摘 要：Advances in thin film light-emitting devices have fueled the rapid growth of a new class of solid-state lighting devices,featuring low fabrication cost,high quantum efficiency,broadband spectrum coverage,*** contrast to the conventional inorganic semiconductors that rely on lattice matched high crystalline quality substrate,solution processable thin films eliminate the dependence on the substrate,which is highly desired for the ease and versatility of integrations with foreign *** taking this advantage,this work developed an ultracompact solution to control the directionality of thin film emitters using integrated dielectric metasurface through one step spin-coating *** a proof of concept,directional emissions from perovskite nanocrystal thin film,including collimated light emissions and two-dimensional beam steering,are experimentally ***,our approach,where light emitters were integrated on the back side of substrate after the fabrication of metasurface,judiciously avoids any potential degradation of material optical quality caused by the multi-step ***,it can serve as a generalized scheme to engage the advantageous properties of dielectric metasurface,including the compactness,high efficiency,beam controllability with the emerging thin film light-emitting diodes(LEDs),which is applicable to a wide range of solution processable materials,including organic light-emitting diodes,quantum-dot light emitting diodes,polymer LEDs,and perovskite LEDs,opening up new pathways to develop low-cost and ultra-compact solid state light sources with versatile beams characteristics.
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