High-quantum-efficiency solar-blind photodetectors

Ryan McClintock; Alireza Yasan; Kathryn Alissa Mayes; Derek James Shiell; Shaban Ramezani Darvish; Patrick Kung; Manijeh Razeghi

doi:10.1117/12.529348

6 July 2004 High-quantum-efficiency solar-blind photodetectors

Ryan McClintock, Alireza Yasan, Kathryn Alissa Mayes, Derek James Shiell, Shaban Ramezani Darvish, Patrick Kung, Manijeh Razeghi

Author Affiliations +

Proceedings Volume 5359, Quantum Sensing and Nanophotonic Devices; (2004) https://doi.org/10.1117/12.529348
Event: Integrated Optoelectronic Devices 2004, 2004, San Jose, CA, United States

Abstract

We report AlGaN-based back-illuminated solar-blind p-i-n photodetectors with a record peak responsivity of 150 mA/W at 280 nm, corresponding to a high external quantum efficiency of 68%, increasing to 74% under 5 volts reverse bias. Through optimization of the p-AlGaN layer, we were able to remove the out-of-band negative photoresponse originating from the Schottky-like p-type metal contact, and hence significantly improve the degree of solar-blindness. We attribute the high efficiency of these devices to the use of very-high quality AlN and Al_0.87Ga_0.13N/AlN superlattice material, a highly conductive Si-In co-doped Al_0.5Ga_0.5N layer, and the elimination of the negative photoresponse through improvement of the p-type AlGaN.

Citation Download Citation

Ryan McClintock, Alireza Yasan, Kathryn Alissa Mayes, Derek James Shiell, Shaban Ramezani Darvish, Patrick Kung, and Manijeh Razeghi "High-quantum-efficiency solar-blind photodetectors", Proc. SPIE 5359, Quantum Sensing and Nanophotonic Devices, (6 July 2004); https://doi.org/10.1117/12.529348

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