Results 1 to 10 of about 200,461 (334)

Josephson Light-Emitting Diode [PDF]

Physical Review Letters, 2010
We consider an optical quantum dot where an electron level and a hole level are coupled to respective superconducting leads. We find that electrons and holes recombine producing photons at discrete energies as well as a continuous tail. Further, the spectral lines directly probe the induced superconducting correlations on the dot.
Recher, P. (author), Nazarov, Y.V. (author), Kouwenhoven, L.P. (author)   +2 more
openaire   +6 more sources

Enhanced light extraction by optimizing near-infrared perovskite-based light emitting diode (PeLED) [PDF]

Scientific Reports
One of the outstanding optoelectronic devices is perovskite-based light emitting diodes (PeLEDs) that have diverse applications according to the wavelength of produced light.
Nava Tabibifar, Mehdi Eskandari, Farhad Akbari Boroumand, Davood Fathi, Saeed Rahimi   +4 more
doaj   +2 more sources

3.5 × 3.5 μm2 GaN blue micro-light-emitting diodes with negligible sidewall surface nonradiative recombination

Nature Communications, 2023
Micro-light-emitting diode displays are generating considerable interest as a promising technology for augmented-reality glasses. However, the fabrication of highly efficient and ultra-small ( 
Xuelun Wang, Xixi Zhao, Tokio Takahashi, Daisuke Ohori, Seiji Samukawa   +4 more
doaj   +1 more source

Design and Development of Simple and Low-cost Light Source for Laparoscopic Surgery

Journal of Nepal Health Research Council, 2022
Background: The existing medical light source device used in laparoscopy surgery is very costly and is not yet developed in Nepal. This study aimed to build a light source device that is cost-effective and passes all the testing parameters like Light ...
Dikshya Chhetri, Shruti Bhandari, Aishwarya Shahi Thakuri, Aayushma Pokharel, Paras Poudel   +4 more
doaj   +1 more source

BAlGaN light‐emitting diode emitting at 350 nm

Electronics Letters, 2023
In this work, the authors report the first demonstration of an ultraviolet light‐emitting diode (LED) with boron‐containing quantum wells (QWs). Secondary ion mass spectrometry measurements revealed a B concentration of 1% in the first QW with an ...
Peter Milner, Vitaly Z. Zubialevich, Thomas O'Connor, Sandeep M. Singh, Davinder Singh, Brian Corbett, Peter J. Parbrook   +6 more
doaj   +1 more source

Light-emitting diode stimulates radiodermatitis recovery [PDF]

Acta Cirúrgica Brasileira, 2021
Purpose To evaluate the effect of light-emitting diode (LED) in an experimental model of radiodermatitis. Methods Ten male Wistar rats weighing 200–250 g were analyzed.
Cristina Pires Camargo, Heloisa Andrade Carvalho, Feres Camargo Maluf, Alexandre Agostinho da Cruz Sousa, Paulo Otavio Maluf Perin, Marcela Maluf Perin, Julio Morais-Besteiro, Rolf Gemperli   +7 more
doaj   +1 more source

Research Progress in the Preparation of Phosphor for White Light Emitting Diode [PDF]

MATEC Web of Conferences, 2022
As a solid-state lighting source, white light emitting diode (LED) has become the most promising green lighting energy source in the 21st century with its three advantages of energy-saving, environmentalfriendly and green-oriented.
Li Xueye
doaj   +1 more source

Progress in the development of the display performance of AR, VR, QLED and OLED devices in recent years

Journal of Information Display, 2022
The remarkable progress of virtual reality, augmented reality, quantum dot light-emitting diode, and organic light-emitting diode as next-generation displays has overcome the leadership of the liquid crystal display during the last two years.
Ho Jin Jang, Jun Yeob Lee, Geun Woo Baek, Jeonghun Kwak, Jae-Hyeung Park   +4 more
doaj   +1 more source

Energy efficiency assessment of power electronic drivers and LED lamps in Li-Fi communication systems

Energy Reports, 2021
Light-fidelity (Li-Fi) communication systems have gained increased concerns as new and alternative paradigm for wireless communications. Through the increased applications of light emitting diode (LED) lamps for lighting in indoor and outdoor ...
Anwaar M. Damerdash, Doaa Abdelhameed, Mokhtar Aly, Emad M. Ahmed, Mohamed A. Ahmed   +4 more
doaj   +1 more source

Improving Mini-LED Pattern Quality by Using Distributed Bragg Reflector and Digital Twin Technology

Crystals, 2022
Fine-pitch backlight technology is rapidly evolving along with display technology, and chips are increasingly designed for direct integration with modules.
Shu-Hsiu Chang, Che-Hsuan Huang, Chatherine Langpoklakpam, Konthoujam James Singh, Chien-Chung Lin, Hao-Chung Kuo   +5 more
doaj   +1 more source