Atomic ordering and bond relaxation in optical spectra of self-organized InP/GaInP2 Wigner molecule structures

A. M. Mintairov; D. V. Lebedev; N. Bert; K. G. Belyaev; V. N. Nevedomskiy; M. V. Rakhlin; A. A. Toropov; A. S. Vlasov; A. Gocalinska; G. Juska; E. Pelucchi; M. A. Arredondo; A. B. Naden; A. V. Shelaev; V. A. Bykov

doi:10.1063/1.5126527

Atomic ordering and bond relaxation in optical spectra of self-organized InP/GaInP₂ Wigner molecule structures

A. M. Mintairov, D. V. Lebedev, N. Bert, K. G. Belyaev, V. N. Nevedomskiy, M. V. Rakhlin, A. A. Toropov, A. S. Vlasov, A. Gocalinska, G. Juska, E. Pelucchi, M. A. Arredondo, A. B. Naden, A. V. Shelaev, V. A. Bykov

School of Chemistry

Research output: Contribution to journal › Article › peer-review

Abstract

We used transmission electron microscopy, Raman, and photoluminescence spectroscopy to identify the effect of CuPt-type GaP-InP atomic ordering (AO) on the structural and emission properties of self-organized (SO) InP/GaInP₂ Wigner molecule (WM) quantum dot (QD) structures. We found that the correlation of AO and SO growth results in the formation of InP/GaInP₂ QD/AO-domain (QD/AOD) core-shell composites. This observation shows that intrinsic WMs in this system emerge due to a strong piezoelectric field generated by AODs, which induces QD doping and a built-in magnetic field. We found that the bond relaxation of AODs leads to a decrease in the emission energy of WMs of 80 meV. The photoluminescence spectra of single WMs having an emission energy ∼1.53 eV are presented here, the lowest one reported for this system.

Original language	English
Article number	202104
Number of pages	5
Journal	Applied Physics Letters
Volume	115
Issue number	20
DOIs	https://doi.org/10.1063/1.5126527
Publication status	Published - 12 Nov 2019

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Electon Microscopy: Electon Microscopy for the characterisation and manipulation of advanced function materials and their interfaces at the nanoscale
Irvine, J. T. S. (PI), Baker, R. (CoI) & Zhou, W. (CoI)
EPSRC
1/04/18 → 2/09/20
Project: Standard

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Mintairov, A. M., Lebedev, D. V., Bert, N., Belyaev, K. G., Nevedomskiy, V. N., Rakhlin, M. V., Toropov, A. A., Vlasov, A. S., Gocalinska, A., Juska, G., Pelucchi, E., Arredondo, M. A., Naden, A. B., Shelaev, A. V., & Bykov, V. A. (2019). Atomic ordering and bond relaxation in optical spectra of self-organized InP/GaInP₂ Wigner molecule structures. Applied Physics Letters, 115(20), Article 202104. https://doi.org/10.1063/1.5126527

@article{1b569ac95ac64a5e9bad9fcdd1f719c8,

title = "Atomic ordering and bond relaxation in optical spectra of self-organized InP/GaInP2 Wigner molecule structures",

abstract = "We used transmission electron microscopy, Raman, and photoluminescence spectroscopy to identify the effect of CuPt-type GaP-InP atomic ordering (AO) on the structural and emission properties of self-organized (SO) InP/GaInP2 Wigner molecule (WM) quantum dot (QD) structures. We found that the correlation of AO and SO growth results in the formation of InP/GaInP2 QD/AO-domain (QD/AOD) core-shell composites. This observation shows that intrinsic WMs in this system emerge due to a strong piezoelectric field generated by AODs, which induces QD doping and a built-in magnetic field. We found that the bond relaxation of AODs leads to a decrease in the emission energy of WMs of 80 meV. The photoluminescence spectra of single WMs having an emission energy ∼1.53 eV are presented here, the lowest one reported for this system.",

author = "Mintairov, {A. M.} and Lebedev, {D. V.} and N. Bert and Belyaev, {K. G.} and Nevedomskiy, {V. N.} and Rakhlin, {M. V.} and Toropov, {A. A.} and Vlasov, {A. S.} and A. Gocalinska and G. Juska and E. Pelucchi and Arredondo, {M. A.} and Naden, {A. B.} and Shelaev, {A. V.} and Bykov, {V. A.}",

note = "A.M.M., D.V.L., and A.S.V. acknowledge the support of the Russian Science Foundation Grant No. 19-19-00246. K.G.B., M.V.R., and A.A.T. acknowledge the financial support of the Russian Foundation for Basic Research (Project No. 18-02-01212). This research was also enabled by the Science Foundation Ireland under Grant Nos. 15/IA/2864, 12/RC/2276, 12/RC/2276-P2, and 18/US/3512, and the Northern Ireland Department for the Economy (Grant No. USI-140). A.B.N. acknowledges support from EPSRC grant no. EP/R023751/1.",

year = "2019",

month = nov,

day = "12",

doi = "10.1063/1.5126527",

language = "English",

volume = "115",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

number = "20",

}

Mintairov, AM, Lebedev, DV, Bert, N, Belyaev, KG, Nevedomskiy, VN, Rakhlin, MV, Toropov, AA, Vlasov, AS, Gocalinska, A, Juska, G, Pelucchi, E, Arredondo, MA, Naden, AB, Shelaev, AV & Bykov, VA 2019, 'Atomic ordering and bond relaxation in optical spectra of self-organized InP/GaInP₂ Wigner molecule structures', Applied Physics Letters, vol. 115, no. 20, 202104. https://doi.org/10.1063/1.5126527

TY - JOUR

T1 - Atomic ordering and bond relaxation in optical spectra of self-organized InP/GaInP2 Wigner molecule structures

AU - Mintairov, A. M.

AU - Lebedev, D. V.

AU - Bert, N.

AU - Belyaev, K. G.

AU - Nevedomskiy, V. N.

AU - Rakhlin, M. V.

AU - Toropov, A. A.

AU - Vlasov, A. S.

AU - Gocalinska, A.

AU - Juska, G.

AU - Pelucchi, E.

AU - Arredondo, M. A.

AU - Naden, A. B.

AU - Shelaev, A. V.

AU - Bykov, V. A.

N1 - A.M.M., D.V.L., and A.S.V. acknowledge the support of the Russian Science Foundation Grant No. 19-19-00246. K.G.B., M.V.R., and A.A.T. acknowledge the financial support of the Russian Foundation for Basic Research (Project No. 18-02-01212). This research was also enabled by the Science Foundation Ireland under Grant Nos. 15/IA/2864, 12/RC/2276, 12/RC/2276-P2, and 18/US/3512, and the Northern Ireland Department for the Economy (Grant No. USI-140). A.B.N. acknowledges support from EPSRC grant no. EP/R023751/1.

PY - 2019/11/12

Y1 - 2019/11/12

N2 - We used transmission electron microscopy, Raman, and photoluminescence spectroscopy to identify the effect of CuPt-type GaP-InP atomic ordering (AO) on the structural and emission properties of self-organized (SO) InP/GaInP2 Wigner molecule (WM) quantum dot (QD) structures. We found that the correlation of AO and SO growth results in the formation of InP/GaInP2 QD/AO-domain (QD/AOD) core-shell composites. This observation shows that intrinsic WMs in this system emerge due to a strong piezoelectric field generated by AODs, which induces QD doping and a built-in magnetic field. We found that the bond relaxation of AODs leads to a decrease in the emission energy of WMs of 80 meV. The photoluminescence spectra of single WMs having an emission energy ∼1.53 eV are presented here, the lowest one reported for this system.

AB - We used transmission electron microscopy, Raman, and photoluminescence spectroscopy to identify the effect of CuPt-type GaP-InP atomic ordering (AO) on the structural and emission properties of self-organized (SO) InP/GaInP2 Wigner molecule (WM) quantum dot (QD) structures. We found that the correlation of AO and SO growth results in the formation of InP/GaInP2 QD/AO-domain (QD/AOD) core-shell composites. This observation shows that intrinsic WMs in this system emerge due to a strong piezoelectric field generated by AODs, which induces QD doping and a built-in magnetic field. We found that the bond relaxation of AODs leads to a decrease in the emission energy of WMs of 80 meV. The photoluminescence spectra of single WMs having an emission energy ∼1.53 eV are presented here, the lowest one reported for this system.

U2 - 10.1063/1.5126527

DO - 10.1063/1.5126527

M3 - Article

SN - 0003-6951

VL - 115

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 20

M1 - 202104

ER -

Atomic ordering and bond relaxation in optical spectra of self-organized InP/GaInP2 Wigner molecule structures

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Electon Microscopy: Electon Microscopy for the characterisation and manipulation of advanced function materials and their interfaces at the nanoscale

Cite this

Atomic ordering and bond relaxation in optical spectra of self-organized InP/GaInP₂ Wigner molecule structures