Three-color quantum dots in a well infrared photodetector

Sanjay Krishna; Sunil Raghavan; Greg von Winckel; Andreas Stintz; Gamini Ariyawansa; Steven Matsik; Unil Perera; Dang Le; David A. Cardimona

doi:10.1117/12.561344

4 November 2004 Three-color quantum dots in a well infrared photodetector

Sanjay Krishna, Sunil Raghavan, Greg von Winckel, Andreas Stintz, Gamini Ariyawansa, Steven Matsik, Unil Perera, Dang Le, David A. Cardimona

Author Affiliations +

Proceedings Volume 5543, Infrared Spaceborne Remote Sensing XII; (2004) https://doi.org/10.1117/12.561344
Event: Optical Science and Technology, the SPIE 49th Annual Meeting, 2004, Denver, Colorado, United States

Abstract

A three color normal incidence quantum dots in a well (DWELL) operating in the mid-wave infrared (MWIR), long wave infrared (LWIR) and very long wave infrared (VLWIR) are reported. The peak operating wavelengths are at ~ 6 mm, ~10.5 mm and ~ 23.2 mm. We believe that the shorter wavelength response (6 mm and 10.5 mm) are due to bound-to-continuum and bound-to-bound transitions between the states in the dot and states in the well, whereas the longer wavelength response (23.2 mm) is due to intersubband transition between dot levels. A bias dependent activation energy ~ 100 meV was extracted from the Arrhenious plots of the dark currents, which is a factor of three larger than that observed in quantum well infrared photodetectors operating at comparable wavelengths.

Citation Download Citation

Sanjay Krishna, Sunil Raghavan, Greg von Winckel, Andreas Stintz, Gamini Ariyawansa, Steven Matsik, Unil Perera, Dang Le, and David A. Cardimona "Three-color quantum dots in a well infrared photodetector", Proc. SPIE 5543, Infrared Spaceborne Remote Sensing XII, (4 November 2004); https://doi.org/10.1117/12.561344

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