首页|Self-polarized RGB device realized by semipolar micro-LEDs and perovskite-in-polymer films for backlight applications
Self-polarized RGB device realized by semipolar micro-LEDs and perovskite-in-polymer films for backlight applications
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In backlighting systems for liquid crystal displays,conventional red,green,and blue(RGB)light sources that lack polariz-ation properties can result in a significant optical loss of up to 50%when passing through a polarizer.To address this in-efficiency and optimize energy utilization,this study presents a high-performance device designed for RGB polarized emissions.The device employs an array of semipolar blue μLEDs with inherent polarization capabilities,coupled with mechanically stretched films of green-emitting CsPbBr3 nanorods and red-emitting CsPbI3-Cs4PbI6 hybrid nanocrystals.The CsPbBr3 nanorods in the polymer film offer intrinsic polarization emission,while the aligned-wire structures formed by the stable CsPbI3-Cs4PbI6 hybrid nanocrystals contribute to substantial anisotropic emissions,due to their high dielec-tric constant.The resulting device achieved RGB polarization degrees of 0.26,0.48,and 0.38,respectively,and exhib-ited a broad color gamut,reaching 137.2%of the NTSC standard and 102.5%of the Rec.2020 standard.When com-pared to a device utilizing c-plane LEDs for excitation,the current approach increased the intensity of light transmitted through the polarizer by 73.6%.This novel fabrication approach for polarized devices containing RGB components holds considerable promise for advancing next-generation display technologies.
School of Electronic Science and Engineering,Fujian Engineering Research Center for Solid-State Lighting,Xiamen University,Xiamen 361005,China
Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province(IKKEM),Xiamen 361005,China
Department of Photonics and Graduate Institute of Electro-Optical Engineering,College of Electrical and Computer Engineering,Yang Ming Chiao Tung University,Hsinchu 30010,China
Semiconductor Research Center,Hon Hai Research Institute,Taipei 11492,China
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国家自然科学基金福建省自然科学基金福建省科技计划中央高校基本科研业务费专项Compound semiconductor technology Collaborat-ive Innovation Platform project of FuXiaQuan National Independent In-novation Demon
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