QUANTUM EFFICIENCY OF PHOTODETECTORS AT THRESHOLD LUMINOSITIES
نویسندگان
چکیده
منابع مشابه
Optimization of GaAs Amplification Photodetectors for 700% Quantum Efficiency
We investigate the device physics of novel GaAs waveguide photodetectors with integrated photon multiplication. Such detectors have the potential to achieve simultaneously high saturation power, high speed, high responsivity, and quantum efficiencies above 100%. Our device design vertically combines a bulk photodetector ridge waveguide region with laterally confined quantum wells for amplificat...
متن کاملModeling of High Temperature GaN Quantum Dot Infrared Photodetectors
In this paper, we present calculations for different parameters of quantum dot infrared photodetectors. We considered a structure which includes quantum dots with large conduction-band-offset materials (GaN/AlGaN). Single band effective mass approximation has been applied in order to calculate the electronic structure. Throughout the modeling, we tried to consider the limiting factors which dec...
متن کاملHigh efficiency THz photodetectors
We present a review of our latest work on UniTravelling Carrier Photodiodes for high efficiency THz emission. The detectors’ waveguide structure allows for both higher responsivity and saturation power thus achieving the highest published THz figure of merit (PTHz/Popt ) up to 1.5 THz for such devices. We also discuss new material development using solid source MBE and the possibility of monoli...
متن کاملQuantum grid infrared photodetectors
In this letter we introduce a quantum well infrared photodetector ~QWIP! structure, which we refer to as the quantum grid infrared photodetector ~QGIP!. In an ideal structure, a grid pattern with very narrow linewidth is created in the QWIP active region to achieve lateral electron confinement, thereby improving its absorption as well as transport characteristics. In order to realize this detec...
متن کاملCharacterization of Responsivity and Quantum Efficiency of TiO2– Based Photodetectors Doped with Ag Nanoparticles
There is a motivation to reduce the thickness of photodetectore to improve the efficiency of extracting excuted carrier. However, reducing the thickness of thin film also reduces the amount of light absorbed. To alleviate this problem we can use light trapping. Ag Nanoparticles with specific diameters are exposed to improve optical characteristics of TiO2-based photodetectors. Optical propertie...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Sensor Electronics and Microsystem Technologies
سال: 2008
ISSN: 2415-3508,1815-7459
DOI: 10.18524/1815-7459.2008.1.114314