High quantum efficiency of depth grade doping negative-electron-affinity GaN photocathode

2010 ◽  
Vol 97 (6) ◽  
pp. 063104 ◽  
Author(s):  
Xiangyang Guo ◽  
Xiaohui Wang ◽  
Benkang Chang ◽  
Yijun Zhang ◽  
Pin Gao
Keyword(s):  
Quantum Efficiency ◽  
Electron Affinity ◽  
Negative Electron Affinity ◽  
High Quantum Efficiency ◽  
High Quantum

Modulation of optical properties of ZnS QDs embedded glasses through aluminum and manganese doping

2021 ◽  
Author(s):  
Kai Li ◽  
Ying Ye ◽  
Wenchao Zhang ◽  
Yuzhou Hu ◽  
Ying Yang ◽  
...  
Keyword(s):  
Optical Properties ◽  
Quantum Efficiency ◽  
High Quantum Efficiency ◽  
Information Display ◽  
Manganese Doping ◽  
High Quantum

Nontoxic cadmium-free ZnS and ZnSe QDs QDs with high quantum efficiency have drawn considerable attention for information display. Applications of ZnS and ZnSe QDs are limited by their short emission...

scholarly journals The degradation of quantum efficiency in negative electron affinity GaAs photocathodes under gas exposure

2014 ◽  
Vol 47 (5) ◽  
pp. 055110 ◽  
Author(s):  
N Chanlek ◽  
J D Herbert ◽  
R M Jones ◽  
L B Jones ◽  
K J Middleman ◽  
...  
Keyword(s):  
Quantum Efficiency ◽  
Electron Affinity ◽  
Negative Electron Affinity ◽  
Gas Exposure

scholarly journals Highly Efficient Near-Infrared Detector Based on Optically Resonant Dielectric Nanodisks

Nanomaterials ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 428
Author(s):  
Reza Masoudian Saadabad ◽  
Christian Pauly ◽  
Norbert Herschbach ◽  
Dragomir N. Neshev ◽  
Haroldo T. Hattori ◽  
...  
Keyword(s):  
Quantum Efficiency ◽  
High Speed ◽  
Near Infrared ◽  
Infrared Detector ◽  
High Quantum Efficiency ◽  
Fast Detection ◽  
High Quantum ◽  
Resonant Modes ◽  
Infrared Wavelengths ◽  
Dielectric Metasurface

Fast detection of near-infrared (NIR) photons with high responsivity remains a challenge for photodetectors. Germanium (Ge) photodetectors are widely used for near-infrared wavelengths but suffer from a trade-off between the speed of photodetection and quantum efficiency (or responsivity). To realize a high-speed detector with high quantum efficiency, a small-sized photodetector efficiently absorbing light is required. In this paper, we suggest a realization of a dielectric metasurface made of an array of subwavelength germanium PIN photodetectors. Due to the subwavelength size of each pixel, a high-speed photodetector with a bandwidth of 65 GHz has been achieved. At the same time, high quantum efficiency for near-infrared illumination can be obtained by the engineering of optical resonant modes to localize optical energy inside the intrinsic Ge disks. Furthermore, small junction capacitance and the possibility of zero/low bias operation have been shown. Our results show that all-dielectric metasurfaces can improve the performance of photodetectors.

A novel high quantum efficiency SiGe Phototransistor detector

2021 ◽  
Author(s):  
Yang Xiang ◽  
Hongyun Xie ◽  
Yin Sha ◽  
Ruilang Ji ◽  
Fu Zhu ◽  
...  
Keyword(s):  
Quantum Efficiency ◽  
High Quantum Efficiency ◽  
High Quantum

CaAlSiN3:Eu2+ translucent ceramic: a promising robust and efficient red color converter for solid state laser displays and lighting

2016 ◽  
Vol 4 (35) ◽  
pp. 8197-8205 ◽  
Author(s):  
Shuxing Li ◽  
Qiangqiang Zhu ◽  
Le Wang ◽  
Daiming Tang ◽  
Yujin Cho ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Solid State ◽  
Quantum Efficiency ◽  
Solid State Laser ◽  
High Quantum Efficiency ◽  
State Laser ◽  
High Quantum ◽  
Red Color ◽  
Color Converter

Translucent CaAlSiN3:Eu2+ ceramic with a unique microstructure shows enhanced thermal stability and high quantum efficiency.

High quantum efficiency red emitting α-phase La2W2O9:Eu3+ phosphor

2019 ◽  
Vol 772 ◽  
pp. 905-911 ◽  
Author(s):  
Qu Cheng ◽  
Fuqiang Ren ◽  
Qi Lin ◽  
Hao Tong ◽  
Xiangshui Miao
Keyword(s):  
Quantum Efficiency ◽  
High Quantum Efficiency ◽  
High Quantum ◽  
Α Phase
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