Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Spectral response, dark current, and noise analyses in resonant tunneling quantum dot infrared photodetectors

Not Accessible

Your library or personal account may give you access

Abstract

Reduction of dark current at high-temperature operation is a great challenge in conventional quantum dot infrared photodetectors, as the rate of thermal excitations resulting in the dark current increases exponentially with temperature. A resonant tunneling barrier is the best candidate for suppression of dark current, enhancement in signal-to-noise ratio, and selective extraction of different wavelength response. In this paper, we use a physical model developed by the authors recently to design a proper resonant tunneling barrier for quantum infrared photodetectors and to study and analyze the spectral response of these devices. The calculated transmission coefficient of electrons by this model and its dependency on bias voltage are in agreement with experimental results. Furthermore, based on the calculated transmission coefficient, the dark current of a quantum dot infrared photodetector with a resonant tunneling barrier is calculated and compared with the experimental data. The validity of our model is proven through this comparison. Theoretical dark current by our model shows better agreement with the experimental data and is more accurate than the previously developed model. Moreover, noise in the device is calculated. Finally, the effect of different parameters, such as temperature, size of quantum dots, and bias voltage, on the performance of the device is simulated and studied.

© 2016 Optical Society of America

Full Article  |  PDF Article
More Like This
Dark current and noise analyses of quantum dot infrared photodetectors

Hongmei Liu and Jianqi Zhang
Appl. Opt. 51(14) 2767-2771 (2012)

Quantum dot infrared photodetector with gated-mode design for mid-IR single photon detection

Mahdi Zavvari and Vahid Ahmadi
Appl. Opt. 52(32) 7675-7681 (2013)

High performances III-Nitride Quantum Dot infrared photodetector operating at room temperature

A. Asgari and S. Razi
Opt. Express 18(14) 14604-14615 (2010)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (9)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (14)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved