Progress in Symmetric and Asymmetric Superlattice Quantum Well Infrared Photodetectors

Germano M. Penello, Pedro H. Pereira, Lesslie Guerra, Luciana D. Pinto, Roberto Jakomin, Renato T. Mourão, Marcos H. Degani, Marcelo Z. Maialle, Deborah Sivco, Claire F. Gmachl, Mauricio P. Pires, Patricia L. Souza

Research output: Contribution to journalReview article

2 Citations (Scopus)

Abstract

Herein, two challenges are addressed, which quantum well infrared photodetectors (QWIPs), based on III-V semiconductors, face, namely: photodetection within the so-called “forbidden gap”, between 1.7 and 2.5 microns, and room temperature operation using thermal sources. First, to reach this forbidden wavelength range, a QWIP which consists of a superlattice structure with a central quantum well (QW) with a different thickness is presented. The different QW in the symmetric structure, which plays the role of a defect in the otherwise periodic structure, gives rise to localized states in the continuum. The proposed InGaAs/InAlAs superlattice QWIP detects radiation around 2.1 microns, beyond the materials bandoffset. Additionally, the wavefunction parity anomaly is explored to increase the oscillator strength of the optical transitions involving higher order states. Second, with the purpose of achieving room temperature operation, an asymmetric InGaAs/InAlAs superlattice, in which the QW with a different thickness is not in the center, is used to detect infrared radiation around 4 microns at 300 K. This structure operates in the photovoltaic mode because it gives rise to states in the continuum which are localized in one direction and extended in the other, leading to a preferential direction for current flow.

Original languageEnglish (US)
Article number1800462
JournalAnnalen der Physik
Volume531
Issue number6
DOIs
StatePublished - Jun 1 2019

Fingerprint

quantum well infrared photodetectors
quantum wells
continuums
infrared radiation
room temperature
optical transition
oscillator strengths
parity
anomalies
defects
radiation
wavelengths

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Keywords

  • infrared photodetectors
  • parity anomaly
  • quantum well infrared photodetectors
  • quantum wells
  • room temperature
  • superlattices

Cite this

Penello, G. M., Pereira, P. H., Guerra, L., Pinto, L. D., Jakomin, R., Mourão, R. T., ... Souza, P. L. (2019). Progress in Symmetric and Asymmetric Superlattice Quantum Well Infrared Photodetectors. Annalen der Physik, 531(6), [1800462]. https://doi.org/10.1002/andp.201800462
Penello, Germano M. ; Pereira, Pedro H. ; Guerra, Lesslie ; Pinto, Luciana D. ; Jakomin, Roberto ; Mourão, Renato T. ; Degani, Marcos H. ; Maialle, Marcelo Z. ; Sivco, Deborah ; Gmachl, Claire F. ; Pires, Mauricio P. ; Souza, Patricia L. / Progress in Symmetric and Asymmetric Superlattice Quantum Well Infrared Photodetectors. In: Annalen der Physik. 2019 ; Vol. 531, No. 6.
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abstract = "Herein, two challenges are addressed, which quantum well infrared photodetectors (QWIPs), based on III-V semiconductors, face, namely: photodetection within the so-called “forbidden gap”, between 1.7 and 2.5 microns, and room temperature operation using thermal sources. First, to reach this forbidden wavelength range, a QWIP which consists of a superlattice structure with a central quantum well (QW) with a different thickness is presented. The different QW in the symmetric structure, which plays the role of a defect in the otherwise periodic structure, gives rise to localized states in the continuum. The proposed InGaAs/InAlAs superlattice QWIP detects radiation around 2.1 microns, beyond the materials bandoffset. Additionally, the wavefunction parity anomaly is explored to increase the oscillator strength of the optical transitions involving higher order states. Second, with the purpose of achieving room temperature operation, an asymmetric InGaAs/InAlAs superlattice, in which the QW with a different thickness is not in the center, is used to detect infrared radiation around 4 microns at 300 K. This structure operates in the photovoltaic mode because it gives rise to states in the continuum which are localized in one direction and extended in the other, leading to a preferential direction for current flow.",
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author = "Penello, {Germano M.} and Pereira, {Pedro H.} and Lesslie Guerra and Pinto, {Luciana D.} and Roberto Jakomin and Mour{\~a}o, {Renato T.} and Degani, {Marcos H.} and Maialle, {Marcelo Z.} and Deborah Sivco and Gmachl, {Claire F.} and Pires, {Mauricio P.} and Souza, {Patricia L.}",
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Penello, GM, Pereira, PH, Guerra, L, Pinto, LD, Jakomin, R, Mourão, RT, Degani, MH, Maialle, MZ, Sivco, D, Gmachl, CF, Pires, MP & Souza, PL 2019, 'Progress in Symmetric and Asymmetric Superlattice Quantum Well Infrared Photodetectors', Annalen der Physik, vol. 531, no. 6, 1800462. https://doi.org/10.1002/andp.201800462

Progress in Symmetric and Asymmetric Superlattice Quantum Well Infrared Photodetectors. / Penello, Germano M.; Pereira, Pedro H.; Guerra, Lesslie; Pinto, Luciana D.; Jakomin, Roberto; Mourão, Renato T.; Degani, Marcos H.; Maialle, Marcelo Z.; Sivco, Deborah; Gmachl, Claire F.; Pires, Mauricio P.; Souza, Patricia L.

In: Annalen der Physik, Vol. 531, No. 6, 1800462, 01.06.2019.

Research output: Contribution to journalReview article

TY - JOUR

T1 - Progress in Symmetric and Asymmetric Superlattice Quantum Well Infrared Photodetectors

AU - Penello, Germano M.

AU - Pereira, Pedro H.

AU - Guerra, Lesslie

AU - Pinto, Luciana D.

AU - Jakomin, Roberto

AU - Mourão, Renato T.

AU - Degani, Marcos H.

AU - Maialle, Marcelo Z.

AU - Sivco, Deborah

AU - Gmachl, Claire F.

AU - Pires, Mauricio P.

AU - Souza, Patricia L.

PY - 2019/6/1

Y1 - 2019/6/1

N2 - Herein, two challenges are addressed, which quantum well infrared photodetectors (QWIPs), based on III-V semiconductors, face, namely: photodetection within the so-called “forbidden gap”, between 1.7 and 2.5 microns, and room temperature operation using thermal sources. First, to reach this forbidden wavelength range, a QWIP which consists of a superlattice structure with a central quantum well (QW) with a different thickness is presented. The different QW in the symmetric structure, which plays the role of a defect in the otherwise periodic structure, gives rise to localized states in the continuum. The proposed InGaAs/InAlAs superlattice QWIP detects radiation around 2.1 microns, beyond the materials bandoffset. Additionally, the wavefunction parity anomaly is explored to increase the oscillator strength of the optical transitions involving higher order states. Second, with the purpose of achieving room temperature operation, an asymmetric InGaAs/InAlAs superlattice, in which the QW with a different thickness is not in the center, is used to detect infrared radiation around 4 microns at 300 K. This structure operates in the photovoltaic mode because it gives rise to states in the continuum which are localized in one direction and extended in the other, leading to a preferential direction for current flow.

AB - Herein, two challenges are addressed, which quantum well infrared photodetectors (QWIPs), based on III-V semiconductors, face, namely: photodetection within the so-called “forbidden gap”, between 1.7 and 2.5 microns, and room temperature operation using thermal sources. First, to reach this forbidden wavelength range, a QWIP which consists of a superlattice structure with a central quantum well (QW) with a different thickness is presented. The different QW in the symmetric structure, which plays the role of a defect in the otherwise periodic structure, gives rise to localized states in the continuum. The proposed InGaAs/InAlAs superlattice QWIP detects radiation around 2.1 microns, beyond the materials bandoffset. Additionally, the wavefunction parity anomaly is explored to increase the oscillator strength of the optical transitions involving higher order states. Second, with the purpose of achieving room temperature operation, an asymmetric InGaAs/InAlAs superlattice, in which the QW with a different thickness is not in the center, is used to detect infrared radiation around 4 microns at 300 K. This structure operates in the photovoltaic mode because it gives rise to states in the continuum which are localized in one direction and extended in the other, leading to a preferential direction for current flow.

KW - infrared photodetectors

KW - parity anomaly

KW - quantum well infrared photodetectors

KW - quantum wells

KW - room temperature

KW - superlattices

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U2 - 10.1002/andp.201800462

DO - 10.1002/andp.201800462

M3 - Review article

VL - 531

JO - Annalen der Physik

JF - Annalen der Physik

SN - 0003-3804

IS - 6

M1 - 1800462

ER -

Penello GM, Pereira PH, Guerra L, Pinto LD, Jakomin R, Mourão RT et al. Progress in Symmetric and Asymmetric Superlattice Quantum Well Infrared Photodetectors. Annalen der Physik. 2019 Jun 1;531(6). 1800462. https://doi.org/10.1002/andp.201800462