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

Nano-scale planar photodetector based on ring form MQWs for FIR regime

Not Accessible

Your library or personal account may give you access

Abstract

In this paper, we proposed a new design of infrared photodetector structure based on ring-shaped multiple quantum wells for long-infrared and far-infrared (FIR) regimes. The absorption coefficient of the proposed photodetector that consists of GaAs/Al0.25Ga0.75As quantum wells with a thickness of 4 nm and a barrier of 40 nm has been calculated, from which a dominant peak of 50 um locates in the FIR regime. The proposed device has a planar structure with small thickness compared with ordinary rectangular multiple quantum well photodetectors. Also, there is 100% enhancement in typical IR absorption versus these ordinary photodetectors. Electronic states and wave functions calculated through solving the Schrödinger equation and then the effect of quantum well number on important parameters of photodetectors, such as gain mode and dark current, are investigated. According to the results, dark current decreases 1 order of magnitude when the number of quantum wells increases from 3 to 4. Also, absorption has redshift and simultaneously increases.

© 2019 Optical Society of America

Full Article  |  PDF Article
More Like This
Optical properties of a few semiconducting heterostructures in the presence of Rashba spin-orbit interactions: a two-dimensional finite-difference numerical approach

Sabzevar Maryam, Ehsani Mohammad Hossein, Solaimani Mehdi, and Ghorbani Mehrzad
J. Opt. Soc. Am. B 36(7) 1774-1782 (2019)

Nanostructured multiple-layer black phosphorus photodetector based on localized surface plasmon resonance

Yan Huang, Xinyi Liu, Yan Liu, Yao Shao, Siqing Zhang, Cizhe Fang, Genquan Han, Jincheng Zhang, and Yue Hao
Opt. Mater. Express 9(2) 739-750 (2019)

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 (8)

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

Tables (2)

You do not have subscription access to this journal. Article tables 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