Results 61 to 70 of about 5,338 (231)

On the Impact of Electron Leakage on the Efficiency Droop for AlGaN Based Deep Ultraviolet Light Emitting Diodes

IEEE Photonics Journal, 2020
In this work, we have investigated the origin of efficiency droop for AlGaN-based deep ultraviolet light-emitting diodes (DUV LEDs). We find that the efficiency droop is likely to be caused by the electron leakage for DUV LEDs studied in this work.
Chunshuang Chu, Kangkai Tian, Jiamang Che, Hua Shao, Jianquan Kou, Yonghui Zhang, Zi-Hui Zhang, Hao-Chung Kuo   +7 more
doaj   +1 more source

An excellent deep-ultraviolet birefringent material based on [BO2]∞ infinite chains

Light: Science & Applications, 2022
Birefringent materials play indispensable roles in modulating the polarization of light and are vital in the laser science and technology. Currently, the design of birefringent materials operating in the deep-ultraviolet region (DUV, λ ≤200 nm) is still ...
Fangfang Zhang, Xinglong Chen, Min Zhang, Wenqi Jin, Shujuan Han, Zhihua Yang, Shilie Pan   +6 more
doaj   +1 more source

Bio‐Derived Nanophotonic Hybrids Enabling Reconfigurable Upconversion for Multilevel Optical Encryption

Laser &Photonics Reviews, EarlyView.
A dual‐gated nanophotonic platform integrates lanthanide‐doped upconversion nanoparticles with a stimuli‐responsive silk–zirconia photonic crystal to enable multilevel optical encryption. Resonant photonic coupling allows hydration‐dependent modulation of visible emission under near‐infrared excitation, achieving reversible switching between decoy and ...
Taehoon Kim, Seohan Yun, Fiorenzo G. Omenetto, Junyong Park   +3 more
wiley   +1 more source

Highly efficient AlGaN-based deep-ultraviolet light-emitting diodes: from bandgap engineering to device craft

Microsystems & Nanoengineering
AlGaN-based light-emitting diodes (LEDs) operating in the deep-ultraviolet (DUV) spectral range (210–280 nm) have demonstrated potential applications in physical sterilization.
Xu Liu, Zhenxing Lv, Zhefu Liao, Yuechang Sun, Ziqi Zhang, Ke Sun, Qianxi Zhou, Bin Tang, Hansong Geng, Shengli Qi, Shengjun Zhou   +10 more
doaj   +1 more source

Solar-blind deep-ultraviolet photodetectors based on solution-synthesized quasi-2D Te nanosheets

Nanophotonics, 2020
Solar-blind deep ultraviolet (DUV) photodetectors with high responsivity (R) and fast response speed are crucial for practical applications in astrophysical analysis, environmental pollution monitoring, and communication.
Cao Rui, Zhang Ye, Wang Huide, Zeng Yonghong, Zhao Jinlai, Zhang Liyuan, Li Jianqing, Meng Fanxu, Shi Zhe, Fan Dianyuan, Guo Zhinan   +10 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

Verrechnungspreise zur Koordination und Erfolgsermittlung

, 2007
Martini JT. Verrechnungspreise zur Koordination und Erfolgsermittlung. Beiträge zur betriebswirtschaftlichen Forschung. Vol 115. Wiesbaden: DUV; 2007.In Theorie und Praxis sind Verrechnungspreise seit langem ein wichtiges und aktuelles Thema.
Martini, Jan Thomas ; https://orcid.org/
core   +1 more source

Nearly Efficiency-Droop-Free AlGaN-Based Ultraviolet Light-Emitting Diodes with a Specifically Designed Superlattice p-Type Electron Blocking Layer for High Mg Doping Efficiency

Nanoscale Research Letters, 2018
This work reports a nearly efficiency-droop-free AlGaN-based deep ultraviolet light-emitting diode (DUV LED) emitting in the peak wavelength of 270 nm. The DUV LED utilizes a specifically designed superlattice p-type electron blocking layer (p-EBL).
Zi-Hui Zhang, Sung-Wen Huang Chen, Chunshuang Chu, Kangkai Tian, Mengqian Fang, Yonghui Zhang, Wengang Bi, Hao-Chung Kuo   +7 more
doaj   +1 more source

Strategische Entwicklung von Unternehmensberatungen — Ein Beitrag aus Sicht der Professional Services Firms Forschung

, 2007
Ringlstetter M, Kaiser S, Kampe T. Strategische Entwicklung von Unternehmensberatungen — Ein Beitrag aus Sicht der Professional Services Firms Forschung. In: Nissen V, ed. Consulting Research.
Kaiser, Stephan, Kampe, Tim ; https://orcid.org/, Ringlstetter, Max, Nissen, Volker   +3 more
core   +1 more source

Characterization of thin films and bulk materials for DUV optical components

, 2022
Paper 64031LApplications of excimer lasers in the deep ultraviolet (DUV) for optical lithography, medicine and material processing are steadily growing together with drastically increasing requirements for low-Ioss optics.
Duparre, A., Schröder, S., Kamprath, M.
core   +1 more source