Results 21 to 30 of about 5,944,358 (312)

Novel Red-Emitting Eu³⁺-Doped Y₂(W_xMo_1−xO₄)₃ Phosphor with High Conversion Efficiency for Lighting and Display Applications

Molecules, 2023
In this study, a series of trivalent europium-doped tungstate and molybdate samples were synthesized using an improved sol-gel and high-temperature solid-state reaction method.
Fan Chen, Muhammad Nadeem Akram, Xuyuan Chen   +2 more
doaj   +1 more source

Improvement of Scintillation Detection System Using Plasmonic Aluminum Photocathode [PDF]

Journal of Nuclear Research and Applications, 2023
A large category of nuclear radiation detection systems are based on scintillation detectors. One of the most important and effective subsystems in performance of scintillation detectors is photomultiplier tube.
H. Zaki Dizaji, A. Arabkhorasani, J. Khalilzadeh, Y. Shahamat   +3 more
doaj   +1 more source

Tailoring of Energy Band in Electron-Blocking Structure Enhancing the Efficiency of AlGaN-Based Deep Ultraviolet Light-Emitting Diodes

IEEE Photonics Journal, 2016
Electron-leakage is a deep-rooted problem for nitride-based light-emitting diodes (LEDs), particularly for AlGaN-based deep-ultraviolet (DUV) LEDs. In this paper, a specific design for the electron-blocking structure in AlGaN DUV LEDs, increasing the Al ...
Xiaoli Ji, Jianchang Yan, Yanan Guo, Lili Sun, Tongbo Wei, Yun Zhang, Junxi Wang, Fuhua Yang, Jinmin Li   +8 more
doaj   +1 more source

Influence of Surface Cleaning on Quantum Efficiency, Lifetime and Surface Morphology of p-GaN:Cs Photocathodes

Micromachines, 2022
Accelerator scientists have high demands on photocathodes possessing high quantum efficiency (QE) and long operational lifetime. p-GaN, as a new photocathode type, has recently gained more and more interest because of its ability to form a negative ...
Jana Schaber, Rong Xiang, Jochen Teichert, André Arnold, Petr Murcek, Paul Zwartek, Anton Ryzhov, Shuai Ma, Stefan Gatzmaga, Peter Michel, Nikolai Gaponik   +10 more
doaj   +1 more source

Automotive 3.0 µm Pixel High Dynamic Range Sensor with LED Flicker Mitigation

Sensors, 2020
We present and discuss parameters of a high dynamic range (HDR) image sensor with LED flicker mitigation (LFM) operating in automotive temperature range.
Minseok Oh, Sergey Velichko, Scott Johnson, Michael Guidash, Hung-Chih Chang, Daniel Tekleab, Bob Gravelle, Steve Nicholes, Maheedhar Suryadevara, Dave Collins, Rick Mauritzson, Lin Lin, Shaheen Amanullah, Manuel Innocent   +13 more
doaj   +1 more source

Spatial-Related Community Structure and Dynamics in Phytoplankton of the Ross Sea, Antarctica

Frontiers in Marine Science, 2020
The Ross Sea exhibits the largest continental shelf and it is considered to be the most productive region in Antarctica, with phytoplankton communities that have so far been considered to be driven by the seasonal dynamics of the polynya, producing the ...
Francesco Bolinesi, Maria Saggiomo, Francisco Ardini, Pasquale Castagno, Angelina Cordone, Giannetta Fusco, Paola Rivaro, Vincenzo Saggiomo, Olga Mangoni, Olga Mangoni   +9 more
doaj   +1 more source

QE evolution of bialkali photocathode at cryogenic temperature

Frontiers in Physics, 2023
Photocathode plays an important role in generating high brightness and low emittance electron beam and K-Cs-Sb photocathode is preferred in SRF injectors for its high quantum efficiency, long lifetime, and low thermal emittance.
Yonglong Zhao, Dongming Ouyang, Huamu Xie, Kexin Liu, Senlin Huang   +4 more
doaj   +1 more source

Gain and Losses and Room-Temperature Operation in Interband Cascade Lasers

IEEE Photonics Journal, 2012
Interband cascade laser structures with a different number of cascades and doping types and levels in the separate confinement and in the hole-injection regions were grown.
Geunmin Ryu, Athanasios N. Chryssis, Jeyran Amirloo, Simarjeet Saini, Fred J. Towner, Mario Dagenais   +5 more
doaj   +1 more source

Review of Recent Progress on Advanced Photocathodes for Superconducting RF Guns

Micromachines, 2022
As is well known, the quality of the photocathodes is essential for the stability and reliability of photoinjector operations. Especially for superconducting radio frequency photoinjectors (SRF guns), the photocathode represents one of the most critical ...
Rong Xiang, Jana Schaber
doaj   +1 more source

Exogenous ascorbic acid scarcely ameliorates inhibition of photosynthesis in rice leaves by O3

Plant Production Science, 2017
The role of ascorbic acid on acute O3-induced inhibition of photosynthesis in solution-cultured paddy rice was evaluated. As pre-treatment, ascorbic acid (0, 5, and 10 mM) was added to the culture solution for 5 d before 5 h of O3 exposure (0, .1, and .3 
Hiroki Kobayakawa, Katsu Imai
doaj   +1 more source