Self-polarized RGB device realized by semipolar micro-LEDs and perovskite-in-polymer films for backlight applications
用于背光应用的聚合物膜中的半极性微型LED和钙钛矿实现的自偏振RGB器件
バックライト応用のためのポリマー膜中の半極性マイクロLEDとペロブスカイトによる自己偏光RGB素子
백라이트 응용을 위한 폴리머 필름의 반극성 마이크로 LED 및 칼슘 티타늄으로 구현된 자가 편광 RGB 부품
Dispositivos rgb autopolarizados implementados por microled semipolar y Perovskita en películas poliméricas para aplicaciones de retroiluminación
Dispositifs RGB auto - polarisants réalisés à partir de micro - led semi - polaires et de pérovskite dans des films polymères pour applications de rétro - éclairage
Аппаратура RGB с полуполярной микросветодиодной и перовскитной поляризацией в полимерной пленке для подсветки
Tingwei Lu 卢霆威 ¹, Yue Lin 林岳 ¹ ², Tianqi Zhang 张添齐 ¹, Yue Huang 黄岳 ¹, Xiaotong Fan 范小通 ¹, Shouqiang Lai 赖寿强 ¹, Yijun Lu 吕毅军 ¹ ², Hao-Chung Kuo 郭浩中 ³ ⁴, Zhong Chen 陈忠 ¹ ², Tingzhu Wu 吴挺竹 ¹ ², Rong Zhang 张荣 ¹ ²
¹ School of Electronic Science and Engineering, Fujian Engineering Research Center for Solid-State Lighting, Xiamen University, Xiamen 361005, China
中国 厦门 厦门大学电子科学与技术学院 福建省固态照明工程研究中心
² Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM), Xiamen 361005, China
中国 厦门 嘉庚创新实验室（福建能源材料科学与技术创新实验室）
³ Department of Photonics and Graduate Institute of Electro-Optical Engineering, College of Electrical and Computer Engineering, Yang Ming Chiao Tung University, Hsinchu 30010, China
中国 新竹 台湾阳明交通大学 电机学院 光子学系 光电工程研究所
⁴ Semiconductor Research Center, Hon Hai Research Institute, Taipei 11492, China
中国 台北 鸿海研究院半导体研究中心
In backlighting systems for liquid crystal displays, conventional red, green, and blue (RGB) light sources that lack polarization properties can result in a significant optical loss of up to 50% when passing through a polarizer. To address this inefficiency 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 dielectric constant.
The resulting device achieved RGB polarization degrees of 0.26, 0.48, and 0.38, respectively, and exhibited a broad color gamut, reaching 137.2% of the NTSC standard and 102.5% of the Rec. 2020 standard. When compared 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.
