Results 1 to 10 of about 19,360,112 (295)

Perovskite Downconverters for Efficient, Excellent Color-Rendering, and Circadian Solid-State Lighting. [PDF]

Nanomaterials (Basel), 2019
He Z, Zhang C, Chen H, Dong Y, Wu ST.
europepmc   +2 more sources

The Optical Properties of InGaN/GaN Nanorods Fabricated on (-201) β-Ga₂O₃ Substrate for Vertical Light Emitting Diodes

Photonics, 2021
We fabricated InGaN/GaN nanorod light emitting diode (LED) on (-201) β-Ga2O3 substrate via the SiO2 nanosphere lithography and dry-etching techniques. The InGaN/GaN nanorod LED grown on β-Ga2O3 can effectively suppress quantum confined Stark effect (QCSE)
Jie Zhao, Weijiang Li, Lulu Wang, Xuecheng Wei, Junxi Wang, Tongbo Wei   +5 more
doaj   +1 more source

Two-Dimensional Transient Temperature Distribution Measurement of GaN Light-Emitting Diode Using High Speed Camera

IEEE Journal of the Electron Devices Society, 2021
We put forward a non-contact method for determining the transient two-dimensional (2D) temperature distribution of light emitting diodes (LEDs).
Guangheng Xiao, Wujun Du, Zhiyun Wang, Guolong Chen, Lihong Zhu, Yulin Gao, Zhong Chen, Ziquan Guo, Yijun Lu   +8 more
doaj   +1 more source

Size-Dependent Quantum Efficiency of Flip-Chip Light-Emitting Diodes at High Current Injection Conditions

Photonics, 2021
Versatile applications call for InGaN-based light-emitting diodes (LEDs) to operate at ultra-high current densities with high quantum efficiency. In this work, we investigated the size-dependent effects of the electrical and optical performance of LEDs ...
Xingfei Zhang, Yan Li, Zhicong Li, Zhenlin Miao, Meng Liang, Yiyun Zhang, Xiaoyan Yi, Guohong Wang, Jinmin Li   +8 more
doaj   +1 more source

Millimeter Thin and Rubber-Like Solid-State Lighting Modules Fabricated Using Roll-to-Roll Fluidic Self-Assembly and Lamination. [PDF]

Adv Mater, 2015
Park SC, Biswas S, Fang J, Mozafari M, Stauden T, Jacobs HO.   +5 more
europepmc   +2 more sources

Wafer-Scale Semipolar Micro-Pyramid Lighting-Emitting Diode Array

Crystals, 2021
InGaN-based micro-structured light-emitting diodes (µLEDs) play a critical role in the field of full-color display. In this work, selected area growth (SAG) of a micro-pyramid LED array was performed on a 2-inch wafer-scale patterned SiO2 template ...
Shuo Zhang, Yan Yan, Tao Feng, Yue Yin, Fang Ren, Meng Liang, Chaoxing Wu, Xiaoyan Yi, Junxi Wang, Jinmin Li, Zhiqiang Liu   +10 more
doaj   +1 more source

Investigation of Efficiency and Droop Behavior Comparison for InGaN/GaN Super Wide-Well Light Emitting Diodes Grown on Different Substrates

IEEE Photonics Journal, 2014
In this work, efficiency droop of InGaN/GaN multiple-quantum-well LEDs with super wide well (WW) is discussed by comparing the external quantum efficiency (EQE) of GaN grown on sapphire and FS-GaN substrates.
Tongbo Wei, Lian Zhang, Xiaoli Ji, Junxi Wang, Ziqiang Huo, Baojun Sun, Qiang Hu, Xuecheng Wei, Ruifei Duan, Lixia Zhao, Yiping Zeng, Jinmin Li   +11 more
doaj   +1 more source

High Luminous Efficacy Phosphor-Converted Mass-Produced White LEDs Achieved by AlN Prebuffer and Transitional-Refraction-Index Patterned Sapphire Substrate

Nanomaterials, 2022
Constant advance in improving the luminous efficacy (ηL) of nitride-based light-emitting diodes (LEDs) plays a critical role for saving measurable amounts of energy.
Shuo Zhang, Meng Liang, Yan Yan, Jinpeng Huang, Yan Li, Tao Feng, Xueliang Zhu, Zhicong Li, Chenke Xu, Junxi Wang, Jinmin Li, Zhiqiang Liu, Xiaoyan Yi   +12 more
doaj   +1 more source

A Transmission-Type Testing System for Measuring Optical Characteristics of Phosphors for Remote-Phosphor-Based White LEDs

IEEE Photonics Journal, 2016
In this paper, we have proposed a transmission-type testing system for determining optical characteristics of remote-phosphor plates in white light-emitting diodes (WLEDs).
Sijia Dang, Ziquan Guo, Weilin Huang, Yulin Gao, Yijun Lu, Yue Lin, Tienmo Shih, Lihong Zhu, Hongli Lu, Zhong Chen   +9 more
doaj   +1 more source

Prediction of Lumen Depreciation and Color Shift for Phosphor-Converted White Light-Emitting Diodes Based on A Spectral Power Distribution Analysis Method

IEEE Access, 2017
The spectral power distribution (SPD) is considered as the figureprint of a light emitting diode (LED). Based on the analysis on its SPD, a method to predict both lumen depreciation and color shift for the phosphor converted white LEDs (pc-LEDs) is ...
Cheng Qian, Jiajie Fan, Xuejun Fan, Guoqi Zhang   +3 more
doaj   +1 more source