The effect of asymmetric barriers of GaAs quantum nanodisks light emitting diode

Higo Akio, Cedric Emmanuel Thomas, Takayuki Kiba, Junichi Takayama, Ichiro Yamashita, Akihiro Murayama, Seiji Samukawa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Quantum dots optoelectronic devices such as laser diodes, light emitting diodes (LED), high-speed modulators, semiconductor optical amplifiers are much attention because of their low power consumption and temperature stability. We have developed a defect-less top-down dry process for 15-nm in-diameter and 8-nm in thickness GaAs quantum nanodisks (QNDs) LEDs by a bio-template, neutral beam etching and asymmetric AlGaAs/GaAs regrown by metalorganic vapor phase epitaxy (MOVPE). To operate at room temperature, different aluminum contents barrier matrix were used for deep band energy offset between GaAs QNDs and AlGaAs barriers. Their temperature dependence of optical properties measured by electroluminescence (E-L) characteristics. We confirmed that energies and the transient behavior of the E-L characteristics as various temperature are strongly affected by the band offset energies, therefore, QND LEDs with different aluminum contents barriers has successfully operated by top-down fusion dry process at room temperature.

Original languageEnglish
Title of host publication16th International Conference on Nanotechnology - IEEE NANO 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages45-46
Number of pages2
ISBN (Electronic)9781509039142
DOIs
Publication statusPublished - 2016 Nov 21
Event16th IEEE International Conference on Nanotechnology - IEEE NANO 2016 - Sendai, Japan
Duration: 2016 Aug 222016 Aug 25

Publication series

Name16th International Conference on Nanotechnology - IEEE NANO 2016

Other

Other16th IEEE International Conference on Nanotechnology - IEEE NANO 2016
CountryJapan
CitySendai
Period16/8/2216/8/25

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics

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