Ultraviolet photodiodes based on AlGaN solid solutions
نویسندگان
چکیده
منابع مشابه
Si-Based ZnO Ultraviolet Photodiodes
Semiconductor-based ultraviolet (UV) photodiodes have been continuously developed that can be widely used in various commercial, civilian areas, and military applications, such as optical communications, missile launching detection, flame detection, UV radiation calibra‐ tion and monitoring, chemical and biological analysis, optical communications, and astro‐ nomical studies, etc. [1-2]. All th...
متن کاملHigh-Performance Solar-Blind AlGaN Schottky Photodiodes
High-performance solar-blind AlGaN-based Schottky photodiodes have been demonstrated. The detectors were fabricated on MOCVD-grown AlGaN/GaN hetero-structures using a microwavecompatible fabrication process. Current-voltage, spectral responsivity, noise, and high-speed characteristics of the detectors were measured and analyzed. Dark currents lower than 1 pA at bias voltages as high as 30 V wer...
متن کاملAlGaN-based ultraviolet light-emitting diodes grown on AlN epilayers
AlGaN-based deep-ultraviolet light-emitting diode (LED) structures, which radiate light at 305 and 290 nm, have been grown on sapphire substrates using an AlN epilayer template. The fabricated devices have a circular geometry to enhance current spreading and light extraction. Circular UV LEDs of different sizes have been characterized. It was found that smaller disk LEDs had higher saturation o...
متن کاملPicosecond Response of Ultraviolet Photodiodes on GaN
LLE Review, Volume 97 25 Experimental results on the fabrication, packaging, and testing of very fast metal-semiconductor-metal photodiodes (MSM-PD’s) made on gallium nitride (GaN) have been previously reported.1 The devices—with feature sizes ranging from 0.3 μm to 5 μm—were packaged in a circuit that was designed to easily couple the electrical transients out of the device, thus making them s...
متن کاملDegradation of AlGaN-based ultraviolet light emitting diodes
Aging the LEDs by driving at high current, results in the decrease of optical power proportional to the reciprocal square route of stress time. With aging time, change in the current–voltage characteristics indicates decrease of the current at low voltage below the light emission threshold, decrease of the forward voltage drop at high currents and usually no change in the series resistance. No ...
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: Journal of Physics: Conference Series
سال: 2013
ISSN: 1742-6596
DOI: 10.1088/1742-6596/461/1/012025