Results 21 to 30 of about 1,029 (198)

Joint intelligent optimization design of the active region and electron blocking layer for AlGaN-based deep ultraviolet LEDs

AIP Advances
Aiming to enhance the internal quantum efficiency (IQE) of AlGaN-based deep ultraviolet light-emitting diodes (DUV LEDs), the active region based on the V-shaped quantum well (QW) and the electron-blocking layer (EBL) structure are jointly optimized ...
Jinglei Wang, Huimin Lu, Jianhua Ma, Yifan Zhu, Zihua Zhang, Tongjun Yu, Xuecheng Wei, Hua Yang, Jianping Wang   +8 more
doaj   +2 more sources

A 265-Nanometer High-Power Deep-UV Light-Emitting Diode Rapidly Inactivates SARS-CoV-2 Aerosols

mSphere, 2022
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection (COVID-19) is an acute respiratory infection transmitted by droplets, aerosols, and contact.
Hiroshi Ueki, Mutsumi Ito, Yuri Furusawa, Seiya Yamayoshi, Shin-ichiro Inoue, Yoshihiro Kawaoka   +5 more
doaj   +1 more source

High Efficiency Deep Ultraviolet Light-Emitting Diodes With Polarity Inversion of Hole Injection Layer

IEEE Photonics Journal, 2023
In this work, we investigate the performance improvement of N-polar AlGaN-based deep ultraviolet light-emitting diodes (DUV LEDs) by the inversion of the hole injection layer from N-polar to Ga-polar.
Xu Liu, Shengrui Xu, Hongchang Tao, Yanrong Cao, Xinhao Wang, Hengsheng Shan, Jincheng Zhang, Yue Hao   +7 more
doaj   +1 more source

AlGaN-Delta-GaN Quantum Well for DUV LEDs [PDF]

Photonics, 2020
AlGaN-delta-GaN quantum well (QW) structures have been demonstrated to be good candidates for the realization of high-efficiency deep-ultraviolet (DUV) light-emitting diodes (LEDs). However, such heterostructures are still not fully understood. This study focuses on investigation of the optical properties and efficiency of the AlGaN-delta-GaN QW ...
Cheng Liu, Bryan Melanson, Jing Zhang
openaire   +2 more sources

Untersuchung der Duv-Präferenz in Abhängigkeit von korrelierter Farbtemperatur (CCT), Farbgamut und betrachteten Objekten [PDF]

, 2023
Der Weißpunkt einer im Innenraum verwendeten LED-Lichtquelle hat einen entscheidenden Einfluss darauf, ob Menschen die Beleuchtung akzeptieren oder nicht.
Klabes, Julian, Kemmler, Elisabeth, Khanh, Tran Quoc, Myland, Paul   +3 more
core   +1 more source

Quantitative evaluation of SARS-CoV-2 inactivation using a deep ultraviolet light-emitting diode

Scientific Reports, 2021
Inactivation technology for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is certainly a critical measure to mitigate the spread of coronavirus disease 2019 (COVID-19). A deep ultraviolet light-emitting diode (DUV-LED) would be a promising
Takeo Minamikawa, Takaaki Koma, Akihiro Suzuki, Takahiko Mizuno, Kentaro Nagamatsu, Hideki Arimochi, Koichiro Tsuchiya, Kaoru Matsuoka, Takeshi Yasui, Koji Yasutomo, Masako Nomaguchi   +10 more
doaj   +1 more source

High photoluminescence intensity of heterostructure AlGaN-based DUV-LED through uniform carrier distribution

, 2023
We report a numerical analysis of the variation of Aluminium (Al) composition in Al Gallium Nitride (AlGaN)-based Deep-Ultraviolet Light-Emitting Diode (DUV-LED) and its effects on the carrier concentration, radiative recombination, and photoluminescence
Hairol Aman, Mohammad Amirul, Ahmad Noorden, Ahmad Fakhrurrazi, Daud, Suzairi, Ahmad Fajri, Faris Azim, Bahadoran, Mahdi, Abdul Kadir, Muhammad Zamzuri   +5 more
core   +1 more source

Rapid inactivation of human respiratory RNA viruses by deep ultraviolet irradiation from light-emitting diodes on a high-temperature-annealed AlN/Sapphire template

Opto-Electronic Advances, 2023
Efficient and eco-friendly disinfection of air-borne human respiratory RNA viruses is pursued in both public environment and portable usage. The AlGaN-based deep ultraviolet (DUV) light-emission diode (LED) has high practical potentials because of its ...
Ke Jiang, Simeng Liang, Xiaojuan Sun, Jianwei Ben, Liang Qu, Shanli Zhang, Yang Chen, Yucheng Zheng, Ke Lan, Dabing Li, Ke Xu   +10 more
doaj   +1 more source

DataSheet1_A compact portable photoacoustic sensor for sub-ppm level SO2 detection with a DUV-LED and a non-resonant photoacoustic cell.docx

, 2023
A photoacoustic module based on a novel 273 nm deep-ultraviolet light-emitting diode (DUV-LED) was developed for sulfur dioxide (SO2) detection. The DUV-LED with an emission angle of 60° emitted a power of 10 mW.
Lei Dong (165252), Hongpeng Wu (6631811), Yujing Jing (17686029), Chaofan Feng (17686032), Ruyue Cui (9356433), Jiyu Xue (17686035)   +5 more
core   +1 more source

Temperature-dependent study on AlGaN-based deep ultraviolet light-emitting diode for the origin of high ideality factor

AIP Advances, 2021
Deep ultraviolet light-emitting diodes (DUV LEDs) are promising light sources for disinfection, especially during the pandemic of novel coronavirus (COVID-19). Despite much effort in the development of DUV LEDs, the device temperature and ideality factor
Yanjun Liao, Ding Li, Qi Guo, Yufeng Liu, Haiming Wang, Weiguo Hu, Zhong Lin Wang   +6 more
doaj   +1 more source