Broad-band electroluminescence from highly stacked InAs quantum dot at telecom-band

Kouichi Akahane, Naokatsu Yamamoto, Tetsuya Kawanishi

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

1 Citation (Scopus)

Abstract

We have developed a growth procedure for increasing the number of stacked layers of InAs quantum dots (QDs) on an InP(311)B substrate that is resistant to defects and dislocations. In this work, we also developed a modulated stacking structure consisting of various size QDs for electroluminescence (EL). This promotes broad-band emission because each QD-distributed wide range can emit a different wavelength. The EL spectrum of this sample was measured with pulsed current injection. There was a strong emission from the ground state at approximately 1524 nm which is suitable for fiber-optic communications, with an injection current of 100 mA at room temperature. The full width at half maximum was 213 nm. Modulated stacking using this strain-compensation technique is thus a useful way to expand the gain wavelength.

Original languageEnglish
Title of host publicationApplied Mechanics, Fluid and Solid Mechanics
Pages269-273
Number of pages5
DOIs
Publication statusPublished - 2014 Jan 16
Externally publishedYes
Event2013 International Conference on Applied Mechanics, Fluid and Solid Mechanics, AMFSM 2013 - , Singapore
Duration: 2013 Nov 152013 Dec 16

Publication series

NameAdvanced Materials Research
Volume871
ISSN (Print)1022-6680

Other

Other2013 International Conference on Applied Mechanics, Fluid and Solid Mechanics, AMFSM 2013
CountrySingapore
Period13/11/1513/12/16

Keywords

  • Electroluminescence
  • Quantum dot
  • Strain-compensation

ASJC Scopus subject areas

  • Engineering(all)

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    Akahane, K., Yamamoto, N., & Kawanishi, T. (2014). Broad-band electroluminescence from highly stacked InAs quantum dot at telecom-band. In Applied Mechanics, Fluid and Solid Mechanics (pp. 269-273). (Advanced Materials Research; Vol. 871). https://doi.org/10.4028/www.scientific.net/AMR.871.269