Intrinsic electric fields in N-polarity <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi mathvariant="normal">G</mi><mi mathvariant="normal">a</mi><mi mathvariant="normal">N</mi><mo>/</mo><mi mathvariant="normal">A</mi><mi mathvariant="normal">l</mi></mrow><mrow><mi>x</mi></mrow></msub></mrow><mrow><msub><mrow><mi mathvariant="normal">Ga</mi></mrow><mrow><mn>1</mn><mi>−</mi><mi>x</mi></mrow></msub></mrow><mi mathvariant="normal">N</mi></math></span> quantum wells with inversion domains

T. V. Shubina; A. A. Toropov; V. N. Jmerik; M. G. Tkachman; A. V. Lebedev; V. V. Ratnikov; A. A. Sitnikova; V. A. Vekshin; S. V. Ivanov; P. S. Kop’ev; P. Bigenwald; J. P. Bergman; P. O. Holtz; B. Monemar

doi:10.1103/PhysRevB.67.195310

Intrinsic electric fields in N-polarity ${G a N / A l}_{x} {Ga}_{1 - x} N$ quantum wells with inversion domains

T. V. Shubina, A. A. Toropov, V. N. Jmerik, M. G. Tkachman, A. V. Lebedev, V. V. Ratnikov, A. A. Sitnikova, V. A. Vekshin, S. V. Ivanov, P. S. Kop’ev, P. Bigenwald, J. P. Bergman, P. O. Holtz, and B. Monemar

Phys. Rev. B 67, 195310 – Published 7 May 2003; Erratum Phys. Rev. B 67, 209902 (2003)

Abstract

GaN/AlGaN quantum wells (QWs) of dominant N polarity with inversion domains (IDs), grown by molecular-beam epitaxy, have been studied. Two-band photoluminescence (PL), with the lower-energy band and an additional absorption edge related to the IDs, is observed in these QWs due to a difference in strain, electric field, and well width in the regions of different polarities. A time-resolved PL study reveals additionally strong inhomogeneity of the electric fields among the IDs. The intrinsic electric fields in the structures are relatively small—their maximal estimated value of 180 kV/cm is among the lowest ever reported. The low-scale electric fields indicate likely polarization deterioration in the N-polarity structures. These conditions are favorable for bright PL up to room temperature in 8–9-nm-wide wells.

Received 13 August 2002
Publisher error corrected 8 May 2003

DOI:https://doi.org/10.1103/PhysRevB.67.195310

Corrections

8 May 2003

Erratum

Publisher’s Note: Intrinsic electric fields in N-polarity ${G a N / A l}_{x}$ ${Ga}_{1 - x}$ N quantum wells with inversion domains [Phys. Rev. B 67, 195310 (2003)]

T. V. Shubina, A. A. Toropov, V. N. Jmerik, M. G. Tkachman, A. V. Lebedev, V. V. Ratnikov, A. A. Sitnikova, V. A. Vekshin, S. V. Ivanov, P. S. Kop’ev, P. Bigenwald, J. P. Bergman, P.-O. Holtz, and B. Monemar

Phys. Rev. B 67, 209902 (2003)

Authors & Affiliations

T. V. Shubina^*, A. A. Toropov, V. N. Jmerik, M. G. Tkachman, A. V. Lebedev, V. V. Ratnikov, A. A. Sitnikova, V. A. Vekshin, S. V. Ivanov, and P. S. Kop’ev

Ioffe Physico-Technical Institute, Polytekhnicheskaya 26, St. Petersburg 194021, Russia

P. Bigenwald

LASMEA-UMR 6602 CNRS-UBP, 63177 Aubiere Cedex, France

J. P. Bergman, P. O. Holtz, and B. Monemar

Department of Physics and Measurement Technology, Linköping University, S-581 83 Linköping, Sweden

^*Electronic address: shubina@beam.ioffe.ru

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Vol. 67, Iss. 19 — 15 May 2003

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