scholarly journals Frequency Response Simulation Analysis of Waveguide Photodetectors

2017 ◽  
Vol 9 (4) ◽  
pp. 1
Author(s):  
Joao Paulo N. Torres ◽  
Jorge Pereira
Keyword(s):  
Numerical Analysis ◽  
Frequency Response ◽  
Quantum Efficiency ◽  
Simulation Analysis ◽  
Longitudinal Direction ◽  
High Quantum Efficiency ◽  
High Quantum ◽  
Absorption Of Light ◽  
High Bandwidth ◽  
Current Flows

In waveguide photodetectors the bandwidth and the quantum efficiency may be specified almost independently because the absorption of light is in the longitudinal direction whereas the current flows in the transversal direction. Then, these devices may combine high bandwidth with high quantum efficiency. In this paper a detailed numerical analysis of the frequency response of waveguide photodetectors is presented. The calculations show that the capacitive effects limit the bandwidth but that by an appropriate choice of a series inductance the maximum bandwidth almost doubles.

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

High Quantum Efficiency at Low Bias AlxGa1-xN p-i-n Photodiodes

2001 ◽  
Vol 188 (1) ◽  
pp. 283-287 ◽  
Author(s):  
J.C. Campbell ◽  
C.J. Collins ◽  
M.M. Wong ◽  
U. Chowdhury ◽  
A.L. Beck ◽  
...  
Keyword(s):  
Quantum Efficiency ◽  
High Quantum Efficiency ◽  
High Quantum
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