Results 1 to 10 of about 1,228,728 (251)

Enhanced Light Output Power on Near-Infrared Light-Emitting Diodes with TITO/Ag Multilayer Reflector

Micromachines, 2022
A titanium–indium tin oxide (TITO) multilayer reflector was investigated to improve the light efficiency of high-power, near-infrared, light-emitting diodes (NIR-LEDs).
Hyung-Joo Lee, In-Kyu Jang, Dae-Kwang Kim, Yu-Jung Cha, Sung Woon Cho   +4 more
doaj   +3 more sources

Interdigital Structure Enhanced the Current Spreading and Light Output Power of GaN-Based Light Emitting Diodes [PDF]

IEEE Access, 2020
In this manuscript, blue light emitting diodes (LEDs) with comb-shaped mesa and interdigital electrodes structure based on gallium nitride (GaN) are presented.
Jie Ding, Lingjuan Che, Xiao Chen, Tao Zhang, Yongdan Huang, Zengli Huang, Zhongming Zeng, Hulin Zhang, Sunan Ding, Hui Yang   +9 more
doaj   +2 more sources

Output Power Monitoring of Ultraviolet Light-Emitting Diode via Sapphire Substrate

Photonics, 2020
Ultraviolet (UV) light plays an important role in air/water/surface sterilization now. Maintaining a certain light intensity is often required to attain the targeted effect. In this paper, on-chip power monitoring of a UV-A light-emitting diode (LED) via
Ching-Hua Chen, Jia-Jun Zhang, Chang-Han Wang, Tzu-Chieh Chou, Rui-Xiang Chan, Pinghui S. Yeh   +5 more
doaj   +3 more sources

Prediction of water-light output in water-light complementary systems [PDF]

E3S Web of Conferences, 2021
With the increasing demand of electricity consumption for social development, China has vigorously promoted the development of renewable energy such as wind and solar energy in recent years.
Yan Tian Xiao, Fan Hui Ying, Guo Su
doaj   +1 more source

Influence of Thin Fluorine Resin Film on DUV LED Packaging Devices

Applied Sciences, 2023
Amorphous fluorine resin is a promising material that can be used for the encapsulation of deep-ultraviolet light-emitting diodes (DUV LEDs) to promote the light output, due to its light characteristics which mean it shows no absorption in the DUV ...
Wenbo Li, Leming Tang, Yong Yang, Zhicong Zhang, Guanghui Li, Meixin Feng, Qiming Xu, Qian Sun   +7 more
doaj   +1 more source

Epoxy Molding Compound Lead Frames With Silicone Resin for Encapsulating AlGaN-Based UVB Light-Emitting Diodes

IEEE Access, 2021
In this paper we report epoxy molding compound lead frames (EMC-LFs) with encapsulated silicone as a simple and inexpensive packaging for AlGaN-based ultraviolet-B (UVB) light-emitting diodes (LEDs) displaying high light extracting efficiencies (LEE) and
Tsung-Yen Liu, Shih-Ming Huang, Mu-Jen Lai, Rui-Sen Liu, Yi-Tsung Chang, Wen-Hong Sun, Ray-Ming Lin   +6 more
doaj   +1 more source

Improving the External Quantum Efficiency of High-Power GaN-Based Flip-Chip LEDs by Using Sidewall Composite Reflective Micro Structure

Micromachines, 2021
For high-power applications, it is important to improve the light extraction efficiency and light output of the vertical direction of LEDs. Flip-chip LEDs (FCLEDs) with an Ag/SiO2/distributed Bragg reflector/SiO2 composite reflection micro structure (CRS)
Liang Xu, Kaiping Fan, Huiqing Sun, Zhiyou Guo   +3 more
doaj   +1 more source

Introducing an n-type electron deceleration layer to enhance the luminous efficiency of AlGaN-based DUV-LEDs

Frontiers in Physics, 2023
The internal quantum efficiency (IQE) of conventional AlGaN-based deep-ultraviolet (DUV) light-emitting diodes (LEDs) is seriously limited by the poor and inhomogeneous carrier injection.
Qiao Wang, Kang Zhang, Dan Lin, Xihui Liang, Yunzhou Liu, Shan Zhang, Hualong Wu, Wei Zhao   +7 more
doaj   +1 more source

Demonstration of Efficient Ultrathin Side-Emitting InGaN/GaN Flip-Chip Light-Emitting Diodes by Double Side Reflectors

Nanomaterials, 2022
This work proposes an InGaN/GaN multiple-quantum-well flip-chip blue ultrathin side-emitting (USE) light-emitting diode (LED) and describes the sidewall light emission characteristics for the application of backlight units in display technology.
Tae Kyoung Kim, Abu Bashar Mohammad Hamidul Islam, Yu-Jung Cha, Seung Hyun Oh, Joon Seop Kwak   +4 more
doaj   +1 more source

Improvement in Light Output of Ultraviolet Light-Emitting Diodes with Patterned Double-Layer ITO by Laser Direct Writing

Nanomaterials, 2019
A patterned double-layer indium-tin oxide (ITO), including the first unpatterned ITO layer serving as current spreading and the second patterned ITO layer serving as light extracting, was applied to obtain uniform current spreading and high light ...
Jie Zhao, Xinghuo Ding, Jiahao Miao, Jinfeng Hu, Hui Wan, Shengjun Zhou   +5 more
doaj   +1 more source