Size-dependent electroluminescence and current-voltage measurements of blue ingan/gan µleds down to the submicron scale

Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review

Autorschaft

  • Stefan Wolter
  • Hendrik Spende
  • Jan Gülink
  • Jana Hartmann
  • Hergo Heinrich Wehmann
  • Andreas Waag
  • Andreas Lex
  • Adrian Avramescu
  • Hans Jürgen Lugauer
  • Norwin von Malm
  • Jean Jacques Drolet
  • Martin Strassburg

Externe Organisationen

  • Technische Universität Braunschweig
  • OSRAM Licht AG
Forschungs-netzwerk anzeigen

Details

OriginalspracheEnglisch
Aufsatznummer836
FachzeitschriftNanomaterials
Jahrgang11
Ausgabenummer4
PublikationsstatusVeröffentlicht - 2021
Extern publiziertJa

Abstract

Besides high-power light-emitting diodes (LEDs) with dimensions in the range of mm, micro-LEDs (µLEDs) are increasingly gaining interest today, motivated by the future applications of µLEDs in augmented reality displays or for nanometrology and sensor technology. A key aspect of this miniaturization is the influence of the structure size on the electrical and optical properties of µLEDs. Thus, in this article, investigations of the size dependence of the electro-optical properties of µLEDs, with diameters in the range of 20 to 0.65 µm, by current–voltage and electroluminescence measurements are described. The measurements indicated that with decreasing size leakage currents in the forward direction decrease. To take advantage of these benefits, the surface has to be treated properly, as otherwise sidewall damages induced by dry etching will impair the optical properties. A possible countermeasure is surface treatment with a potassium hydroxide based solution that can reduce such defects.

ASJC Scopus Sachgebiete

Zitieren

Size-dependent electroluminescence and current-voltage measurements of blue ingan/gan µleds down to the submicron scale. / Wolter, Stefan; Spende, Hendrik; Gülink, Jan et al.
in: Nanomaterials, Jahrgang 11, Nr. 4, 836, 2021.

Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review

Wolter, S, Spende, H, Gülink, J, Hartmann, J, Wehmann, HH, Waag, A, Lex, A, Avramescu, A, Lugauer, HJ, von Malm, N, Drolet, JJ & Strassburg, M 2021, 'Size-dependent electroluminescence and current-voltage measurements of blue ingan/gan µleds down to the submicron scale', Nanomaterials, Jg. 11, Nr. 4, 836. https://doi.org/10.3390/nano11040836
Wolter, S., Spende, H., Gülink, J., Hartmann, J., Wehmann, H. H., Waag, A., Lex, A., Avramescu, A., Lugauer, H. J., von Malm, N., Drolet, J. J., & Strassburg, M. (2021). Size-dependent electroluminescence and current-voltage measurements of blue ingan/gan µleds down to the submicron scale. Nanomaterials, 11(4), Artikel 836. https://doi.org/10.3390/nano11040836
Wolter S, Spende H, Gülink J, Hartmann J, Wehmann HH, Waag A et al. Size-dependent electroluminescence and current-voltage measurements of blue ingan/gan µleds down to the submicron scale. Nanomaterials. 2021;11(4):836. doi: 10.3390/nano11040836
Wolter, Stefan ; Spende, Hendrik ; Gülink, Jan et al. / Size-dependent electroluminescence and current-voltage measurements of blue ingan/gan µleds down to the submicron scale. in: Nanomaterials. 2021 ; Jahrgang 11, Nr. 4.
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abstract = "Besides high-power light-emitting diodes (LEDs) with dimensions in the range of mm, micro-LEDs (µLEDs) are increasingly gaining interest today, motivated by the future applications of µLEDs in augmented reality displays or for nanometrology and sensor technology. A key aspect of this miniaturization is the influence of the structure size on the electrical and optical properties of µLEDs. Thus, in this article, investigations of the size dependence of the electro-optical properties of µLEDs, with diameters in the range of 20 to 0.65 µm, by current–voltage and electroluminescence measurements are described. The measurements indicated that with decreasing size leakage currents in the forward direction decrease. To take advantage of these benefits, the surface has to be treated properly, as otherwise sidewall damages induced by dry etching will impair the optical properties. A possible countermeasure is surface treatment with a potassium hydroxide based solution that can reduce such defects.",
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T1 - Size-dependent electroluminescence and current-voltage measurements of blue ingan/gan µleds down to the submicron scale

AU - Wolter, Stefan

AU - Spende, Hendrik

AU - Gülink, Jan

AU - Hartmann, Jana

AU - Wehmann, Hergo Heinrich

AU - Waag, Andreas

AU - Lex, Andreas

AU - Avramescu, Adrian

AU - Lugauer, Hans Jürgen

AU - von Malm, Norwin

AU - Drolet, Jean Jacques

AU - Strassburg, Martin

N1 - Publisher Copyright: © 2021 by the authors. Licensee MDPI, Basel, Switzerland.

PY - 2021

Y1 - 2021

N2 - Besides high-power light-emitting diodes (LEDs) with dimensions in the range of mm, micro-LEDs (µLEDs) are increasingly gaining interest today, motivated by the future applications of µLEDs in augmented reality displays or for nanometrology and sensor technology. A key aspect of this miniaturization is the influence of the structure size on the electrical and optical properties of µLEDs. Thus, in this article, investigations of the size dependence of the electro-optical properties of µLEDs, with diameters in the range of 20 to 0.65 µm, by current–voltage and electroluminescence measurements are described. The measurements indicated that with decreasing size leakage currents in the forward direction decrease. To take advantage of these benefits, the surface has to be treated properly, as otherwise sidewall damages induced by dry etching will impair the optical properties. A possible countermeasure is surface treatment with a potassium hydroxide based solution that can reduce such defects.

AB - Besides high-power light-emitting diodes (LEDs) with dimensions in the range of mm, micro-LEDs (µLEDs) are increasingly gaining interest today, motivated by the future applications of µLEDs in augmented reality displays or for nanometrology and sensor technology. A key aspect of this miniaturization is the influence of the structure size on the electrical and optical properties of µLEDs. Thus, in this article, investigations of the size dependence of the electro-optical properties of µLEDs, with diameters in the range of 20 to 0.65 µm, by current–voltage and electroluminescence measurements are described. The measurements indicated that with decreasing size leakage currents in the forward direction decrease. To take advantage of these benefits, the surface has to be treated properly, as otherwise sidewall damages induced by dry etching will impair the optical properties. A possible countermeasure is surface treatment with a potassium hydroxide based solution that can reduce such defects.

KW - Efficiency

KW - Electroluminescence

KW - GaN

KW - Size effect

KW - µLED

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DO - 10.3390/nano11040836

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