Electrical and Luminescent Properties and the Spectra of Deep Centers in GaMnN/InGaN Light-Emitting Diodes

A. Y. Polyakov, N. B. Smirnov, A. V. Govorkov, Jihyun Kim, F. Ren, G. T. Thaler, R. M. Frazier, B. P. Gila, C. R. Abernathy, S. J. Pearton, I. A. Buyanova, G. Y. Rudko, W. M. Chen, C. C. Pan, G. T. Chen, J. I. Chyi, J. M. Zavada

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3 Citations (Scopus)

Abstract

Electrical and electroluminescent properties were studied for GaN/InGaN light-emitting diodes (LEDs) with the n-GaN layer up and with the top portion of the n layer made of undoped GaMnN to allow polarization modulation by applying an external magnetic field (so-called "spin-LEDs"). The contact annealing temperature was kept to 750°C, which is the thermal stability limit for retaining room-temperature magnetic ordering in the GaMnN layer. Measurable electroluminescence (EL) was obtained in these structures at threshold voltages of ∼15 V, with a lower EL signal compared to control LEDs without Mn, This is related to the existence of two parasitic junctions between the metal and the lower contact p-type layer and between the GaMnN and the n-GaN in the top contact layer.

Original languageEnglish
Pages (from-to)241-247
Number of pages7
JournalJournal of Electronic Materials
Volume33
Issue number3
DOIs
Publication statusPublished - 2004 Mar
Externally publishedYes

Keywords

  • Electroluminescence (EL)
  • GaN/InGaN
  • Light-emitting diodes (LEDs)

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Materials Chemistry

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    Polyakov, A. Y., Smirnov, N. B., Govorkov, A. V., Kim, J., Ren, F., Thaler, G. T., Frazier, R. M., Gila, B. P., Abernathy, C. R., Pearton, S. J., Buyanova, I. A., Rudko, G. Y., Chen, W. M., Pan, C. C., Chen, G. T., Chyi, J. I., & Zavada, J. M. (2004). Electrical and Luminescent Properties and the Spectra of Deep Centers in GaMnN/InGaN Light-Emitting Diodes. Journal of Electronic Materials, 33(3), 241-247. https://doi.org/10.1007/s11664-004-0186-7