Full text
Preview |
PDF
- Requires a PDF viewer, such as GSview, Xpdf or Adobe Acrobat Reader
Download (1MB) | Preview |
Fernández González, Álvaro de Guzmán, San Román, Rocio and Hierro Cano, Adrián (2011). Room temperature absorption in laterally biased Quantum Infrared Detectors fabricated by MBE regrowth. "Journal of Crystal Growth", v. 323 (n. 1); pp. 496-500. ISSN 0022-0248. https://doi.org/10.1016/j.jcrysgro.2010.10.159.
Title: | Room temperature absorption in laterally biased Quantum Infrared Detectors fabricated by MBE regrowth |
---|---|
Author/s: |
|
Item Type: | Article |
Título de Revista/Publicación: | Journal of Crystal Growth |
Date: | May 2011 |
ISSN: | 0022-0248 |
Volume: | 323 |
Subjects: | |
Faculty: | E.T.S.I. Telecomunicación (UPM) |
Department: | Ingeniería Electrónica |
Creative Commons Licenses: | Recognition - No derivative works - Non commercial |
Preview |
PDF
- Requires a PDF viewer, such as GSview, Xpdf or Adobe Acrobat Reader
Download (1MB) | Preview |
In this paper, we show room temperature operation of a quantum well infrared photodetector (QWIP) using lateral conduction through ohmic contacts deposited at both sides of two n-doped quantum wells. To reduce the dark current due to direct conduction in the wells, we apply an electric field between the quantum wells and two pinch-off Schottky gates, in a fashion similar to a field effect device. Since the normal incidence absorption is strongly reduced in intersubband transitions in quantum wells, we first analyze the response of a detector based on quantum dots (QD). This QD device shows photocurrent signal up to 150 K when it is processed in conventional vertical detector. However, it is possible to observe room temperature signal when it is processed in a lateral structure. Finally, the room temperature photoresponse of the QWIP is demonstrated, and compared with theory. An excellent agreement between the estimated and measured characteristics of the device is found
Item ID: | 12058 |
---|---|
DC Identifier: | https://oa.upm.es/12058/ |
OAI Identifier: | oai:oa.upm.es:12058 |
DOI: | 10.1016/j.jcrysgro.2010.10.159 |
Deposited by: | Memoria Investigacion |
Deposited on: | 14 Sep 2012 10:54 |
Last Modified: | 27 Mar 2023 14:57 |