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Fabrication of GaNxAs1-x quantum structures by focused ion beam patterning

  • K. Alberi
  • , A. Minor
  • , M. A. Scarpulla
  • , S. J. Chung
  • , D. E. Mars
  • , K. M. Yu
  • , W. Walukiewicz
  • , O. D. Dubon

Research output: Chapters, Conference Papers, Creative and Literary WorksRGC 32 - Refereed conference paper (with host publication)peer-review

Abstract

A novel approach to the fabrication of GaNxAs1-x quantum dots and wires via ion beam patterning is presented. Photomodulated reflectance spectra confirm that N can be released from the As sublattice of an MBE-grown GaNxAs1-x film by amorphization through ion implantation followed by regrowth upon rapid thermal annealing (RTA). Amorphization may be achieved with a focused ion beam (FIB), which is used to implant Ga ions in patterned lines such that annealing produces GaAs regions within a GaNxAs1-x film. The profiles of these amorphized lines are dependent upon the dose implanted, and the film reaches a damage threshold during RTA due to excess Ga. By altering the FIB implantation pattern, quantum dots or wires may be fabricated. © 2005 American Institute of Physics.
Original languageEnglish
Title of host publicationPHYSICS OF SEMICONDUCTORS
Subtitle of host publication27th International Conference on the Physics of Semiconductors
EditorsJosé Menéndez, Chris G. Van de Walle
PublisherAmerican Institute of Physics
Pages223-224
ISBN (Print)0735402574, 9780735402577
DOIs
Publication statusPublished - 30 Jun 2005
Externally publishedYes
Event27th International Conference on the Physics of Semiconductors (ICPS 27) - Flagstaff, AZ, United States
Duration: 26 Jul 200430 Jul 2004

Publication series

NameAIP Conference Proceedings
Volume772
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference27th International Conference on the Physics of Semiconductors (ICPS 27)
PlaceUnited States
CityFlagstaff, AZ
Period26/07/0430/07/04

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