TU-C-I-609-09: Towards Low-Dose Soft-Tissue Visualization in Megavoltage Imaging: Initial Evaluation of a Prototype High Quantum Efficiency Segmented Crystal-Based Portal Imager

2005 ◽  
Vol 32 (6Part15) ◽  
pp. 2081-2081
Author(s):  
Amit Sawant ◽  
Larry E Antonuk ◽  
Youcef El-Mohri ◽  
Yixin Li ◽  
Yi Wang ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Quantum Efficiency ◽  
Low Dose ◽  
Initial Evaluation ◽  
High Quantum Efficiency ◽  
High Quantum ◽  
Megavoltage Imaging

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 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

Composition Screening in Blue-Emitting Li4Sr1+xCa0.97–x(SiO4)2:Ce3+ Phosphors for High Quantum Efficiency and Thermally Stable Photoluminescence

2017 ◽  
Vol 9 (36) ◽  
pp. 30746-30754 ◽  
Author(s):  
Jingchen Zhang ◽  
Jilin Zhang ◽  
Wenli Zhou ◽  
Xiaoyu Ji ◽  
Wentao Ma ◽  
...  
Keyword(s):  
Quantum Efficiency ◽  
Thermally Stable ◽  
High Quantum Efficiency ◽  
High Quantum
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