Electron cyclotron resonance plasma assisted pulsed laser deposition for compound host film synthesis and in situ doping

Y. F. Lu, J. Sun, D. Yu, L. Q. Shi, Z. B. Dong, J. D. Wu

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We developed a method for compound host film synthesis and in situ doping based on plasma assisted pulsed laser deposition by coablation of two targets with two pulsed laser beams. The feasibility of this method was demonstrated by the preparation of Er-doped GaN films. In the reactive nitrogen environment and with the assistance of nitrogen plasma generated from electron cyclotron resonance microwave discharge, the ablation of a polycrystalline GaAs target resulted in the reactive deposition of a GaN host film, whereas the ablation of a metallic Er target provided the host with Er atoms for in situ doping in the growing GaN host film. Hexagonal GaN films were formed on a silicon substrate as the host and Er was incorporated into the host with controlled concentration. We found that the composition of the compound host could be adjusted by varying the laser fluence on the target for host deposition or the energy of the plasma stream bombarding the growing host film. The dopant concentration could also be independently controlled to vary in a wide range by changing the pulse repetition ratio of the two laser beams or the laser fluence on the target for dopant supply. It was also proved that doping of very low concentrations could be easily realized by simply adjusting the pulse repetition rate and the fluence of the second laser.

Original languageEnglish (US)
Pages (from-to)413-417
Number of pages5
JournalJournal of Vacuum Science and Technology A: Vacuum, Surfaces and Films
Volume24
Issue number3
DOIs
StatePublished - May 23 2006

Fingerprint

Electron cyclotron resonance
Pulsed laser deposition
electron cyclotron resonance
pulsed laser deposition
Doping (additives)
Plasmas
synthesis
fluence
Ablation
ablation
Laser beams
Lasers
laser beams
lasers
Nitrogen plasma
Pulse repetition rate
nitrogen plasma
pulse repetition rate
Silicon
Pulsed lasers

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

Cite this

Electron cyclotron resonance plasma assisted pulsed laser deposition for compound host film synthesis and in situ doping. / Lu, Y. F.; Sun, J.; Yu, D.; Shi, L. Q.; Dong, Z. B.; Wu, J. D.

In: Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films, Vol. 24, No. 3, 23.05.2006, p. 413-417.

Research output: Contribution to journalArticle

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