Megahertz bandwidth AlxGa1-xN/GaN-based p-i-n detectors

Gary A. Smith; Michael J. Estes; Tuoc Dang; Arnel A. Salvador; Zhifang Fan; Guangyu Xu; Andrei Botchkarev; Hadis Morkoc; P. Wolf

doi:10.1117/12.304482

8 April 1998 Megahertz bandwidth AlxGa1-xN/GaN-based p-i-n detectors

Gary A. Smith, Michael J. Estes, Tuoc Dang, Arnel A. Salvador, Zhifang Fan, Guangyu Xu, Andrei Botchkarev, Hadis Morkoc, P. Wolf

Author Affiliations +

Proceedings Volume 3287, Photodetectors: Materials and Devices III; (1998) https://doi.org/10.1117/12.304482
Event: Optoelectronics and High-Power Lasers and Applications, 1998, San Jose, CA, United States

Abstract

This paper discuses recent results of time response and spectral responsivity measurements made on Al_xGa_1-xN/GaN-based p-i-n UV detector with .03 < x < 0.12, where x is the aluminum concentration. Al_xGa_1-xN/GaN-based p-i-n detectors with response times as fast as 6 ns corresponding to greater than 26 MHz bandwidths are reported. Peak spectral responsivities of homojunction Al_.03Ga_.97N p-i-n UV detectors were found to be as high as 0.08 A/W at 343 nm while those of the Al_.1Ga_.9N/GaN p-i-ns were as high as 0.15 A/W at 360 nm. Homojunction GaN and Al_.03Ga_.97N as well as p-Al_.1Ga_.9N/i-GaN/n-GaN structures were grown on sapphire substrates by reactive molecular beam epitaxy and processed into UV detectors. These p-i-n detectors were then characterized in terms of their time response and spectral responsivity. Attempts to measure the noise of the Al_.03Ga_.97N homojunction p-i-ns are also discussed.

Citation Download Citation

Gary A. Smith, Michael J. Estes, Tuoc Dang, Arnel A. Salvador, Zhifang Fan, Guangyu Xu, Andrei Botchkarev, Hadis Morkoc, and P. Wolf "Megahertz bandwidth AlxGa1-xN/GaN-based p-i-n detectors", Proc. SPIE 3287, Photodetectors: Materials and Devices III, (8 April 1998); https://doi.org/10.1117/12.304482

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available