A New Combustion Synthesis Method for GaN:Eu3+ and Ga2O3:Eu3+ Luminescent Powders

G. A. Hirata, F. Ramos, R. Garcia, E. J. Bosze, J. Mckittrick, O. Contreras, Fernando Ponce

Research output: Contribution to journalArticle

39 Scopus citations

Abstract

New low-temperature methods to produce GaN:Eu and Ga2O3:Eu (0 ≤ x ≤ 1) highly-luminescent powders are presented. These procedures yield finely divided powders through exothermic reactions between the precursors. The preparation of Eu-doped Ga2O3 powders was achieved using a new combustion synthesis technique (hydrazine/metal-nitrate method). The process starts with aqueous solutions of Eu(NO3)3 and Ga(NO3)3 as the precursors and hydrazine as (non-carbonaceous) fuel. A spontaneous combustion reaction occurs by increasing the temperature to between 150 and 200°C in a closed vessel filled with argon, and produces (EuxGa1-x)2O3 directly. The preparation of Eu-doped GaN uses the ammonium hexafluoro-metal method. The powders present strong luminescence associated with the dopant. A sharp and strong GaN luminescence is observed, indicative of high purity and crystallinity as determined by low-temperature cathodoluminescence. The composition and powder morphology have been studied using energy dispersive spectroscopy and scanning electron microscopy.

Original languageEnglish (US)
Pages (from-to)179-182
Number of pages4
JournalPhysica Status Solidi (A) Applied Research
Volume188
Issue number1
DOIs
StatePublished - Nov 1 2001

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'A New Combustion Synthesis Method for GaN:Eu<sup>3+</sup> and Ga<sub>2</sub>O<sub>3</sub>:Eu<sup>3+</sup> Luminescent Powders'. Together they form a unique fingerprint.

  • Cite this