Results 61 to 70 of about 2,177,698 (204)

Enhanced Performance of an AlGaN-Based Deep-Ultraviolet LED Having Graded Quantum Well Structure

IEEE Photonics Journal, 2019
AlGaN-based deep ultraviolet light-emitting diodes (DUV LEDs) suffer from severe quantum confined Stark effect (QCSE) due to the strong polarization field in the quantum wells (QWs) grown on c-plane substrates.
Huabin Yu, Qian Chen, Zhongjie Ren, Meng Tian, Shibing Long, Jiangnan Dai, Changqing Chen, Haiding Sun   +7 more
doaj   +1 more source

Phase Engineering of Plasma‐Enhanced Atomic Layer Deposited Molybdenum Disulfide Using High Accuracy Direct Writing With Focused Li+ and Ga+ Ion Beams and Ultrashort Pulse Laser

Small, EarlyView.
In the context of phase heterostructures on two‐dimensional materials, a high‐precision direct writing approach is employed. This involves using a focused ion beam to transform molybdenum disulfide to the metallic 1T phase, followed by retransformation via ultrashort pulse laser processing.
Marvin Krüner, Achim Nadzeyka, Malte Jonas Marius Julian Becher, Zhongquan Liao, Detlef Rogalla, André Clausner, Andreas Ostendorf, Michael Kahl, Claudia Bock   +8 more
wiley   +1 more source

Design and Performance Analysis of Electron Blocking Layer free GaN/AlInN/GaN Nanowire Deep-Ultraviolet LED

, 2022
We report on the illustration of the novel electron blocking layer (EBL) free AIlnN nanowire light-emitting diodes (LED) with a single-quantum well (SQW) operating in the deep ultraviolet (DUV) wavelength region (sub-250 nm).
Das, Samadrita, Talukdar, Fazal Ahmed, Crupi, Giovanni, Lenka, Trupti Ranjan, Nguyen, Hieu Pham Trung   +4 more
core   +1 more source

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   +1 more source

Synthesis of a waterproof geopolymer adhesive applied in DUV LEDs packaging

Ceramics International
This paper presents the synthesis of a waterproof geopolymer based on the modification of silicon phosphate (Si3(PO4)4) that adheres to alumina and quartz glass substrate, which can replace traditional organic polymers for packaging deep-ultraviolet light-emitting diodes.
Qinglei Sun, Feifan Fang, Zheng Li, Jiuzhou Zhao, Macarena Mendez Ribo, Yijing Wang, Liang Hao   +6 more
openaire   +2 more sources

Microfluidic Sample Compartmentalization for Biomolecular Concentration Quantification Using a Nanopore Sensor

Small Methods, EarlyView.
We compartmentalize samples into picoliter volumes using a microfluidic device, allowing us to determine biomolecular concentration by counting molecules to depletion within a known volume without calibration. By integrating a nanopore sensor for this counting process, we also obtain real‐time data on the size, shape, and conformation of each ...
Morteza Safari, Juliana Chawich, Ali Najafi Sohi, Martin Charron, Vincent Tabard‐Cossa, Michel Godin   +5 more
wiley   +1 more source

Carrier Transport in a Deep Ultraviolet Mixed Quantum Well Light Emitting Diode

IEEE Photonics Journal
Aluminium Gallium Nitride (AlGaN) based light emitting diodes (LED) are the enabling technology for compact emitters of deep ultraviolet (DUV) radiation and are in high demand for environmental and medical applications.
Friedhard Romer, Gregor Hofmann, Jakob Hopfner, Marcel Schilling, Anton Muhin, Tim Wernicke, Michael Kneissl, Bernd Witzigmann   +7 more
doaj   +1 more source

Integrating Chemical, Electrical, and Photonic Effects Into a Unified ETOP‐Based Plasma Dose Framework

High Voltage, EarlyView.
ABSTRACT In plasma medicine and biological applications, plasmas typically deliver a complex combination of reactive chemical species and multiple physical energy components. However, establishing a unified and comparable dose metric to characterise their integrated biological effects remains a major challenge that continues to limit progress in this ...
Erqi Wu, Jialin Liu, Zhiyu Li, Dawei Liu, Lanlan Nie, Xinpei Lu   +5 more
wiley   +1 more source

Planar Compound Eye Lens for Enhanced Light Extraction Efficiency in AlGaN‐Based Deep Ultraviolet LEDs

Advanced Photonics Research
Total internal reflection prevents photons from escaping deep‐ultraviolet (DUV) LED, resulting in serious energy waste and reduced service life.
Qilong Tan, Jie Zhao, Qixin Li, Huan Liu, Bin Dong, Chenguang He, Zhitao Chen, Wen Zhou, Ningyang Liu   +8 more
doaj   +1 more source

Device Simulation of Hole Transport in 233 nm Multiquantum Well AlGaN‐Based UV LED

physica status solidi (a), Volume 223, Issue 17, 9 September 2026.
Deep‐UV LEDs suffer from low hole injection efficiency. In this work, electro optical simulations of AlGaN DUV LEDs with 6, 12, and 21 quantum wells, emitting at 233 nm, reveal efficient inter‐well hole transport within the active multiple quantum well region. The data are consistent with experimental findings.
Ibrahim Marouf, Friedhard Römer, Marcel Schilling, Franz Biebler, Jakob Höpfner, Massimo Grigoletto, Tim Wernicke, Michael Kneissl, Bernd Witzigmann   +8 more
wiley   +1 more source