Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/327076
Type: Artigo
Title: Detecting Infrared Radiation Beyond The Bandoffset With Intersubband Transitions
Author: Guerra
L.; Penello
G. M.; Pires
M. P.; Pinto
L. D.; Jakomin
R.; Mourao
R. T.; Degani
M. H.; Maialle
M. Z.; Souza
P. L.
Abstract: InGaAs/InAlAs quantum well (QW) infrared photodetector structures have been investigated to reach operation energies larger than the heterostructure bandoffset. The structures are composed of superlattices having a central QW with a thickness different from the others, behaving as a defect within the periodic structure. The central QW gives rise to localized states in the continuum, allowing absorption and current generation for the radiation of energies beyond the bandoffset. The detection of radiation as large as 587 meV (2.11 mu m) has been achieved with intrinsic intersubband transition from the ground state to the second localized excited state in the continuum, as manifested by absorption and photocurrent measurements. Theoretical calculations fully agree with the experimental data, strongly supporting the analysis of the results.
Subject: Qwip
Superlattice
Infrared Detection
Swir
Editor: IEEE-Inst Electrical Electronics Engineers Inc
Piscataway
Citation: Ieee Photonics Technology Letters. Ieee-inst Electrical Electronics Engineers Inc, v. 28, p. 1641 - 1644, 2016.
Rights: fechado
Identifier DOI: 10.1109/LPT.2016.2554064
Address: http://ieeexplore.ieee.org.ez88.periodicos.capes.gov.br/document/7453138/
Date Issue: 2016
Appears in Collections:Unicamp - Artigos e Outros Documentos

Files in This Item:
File SizeFormat 
000379753400010.pdf746.15 kBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.