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Title: Preliminary study on preparation of BCNO phosphor particles using citric acid as carbon source

A citric acid was used as a carbon source in the preparation of boron carbon oxy-nitride (BCNO) phosphor particles by a facile process. The preparation process was conducted at relatively low temperature 750 °C and at ambient pressure. The prepared BCNO phosphors showed a high photoluminescence (PL) performance at peak emission wavelength of 470 nm under excitation by a UV light 365 nm. The effects of carbon/boron and nitrogen/boron molar ratios on the PL properties were also investigated. The result showed that the emission spectra with a wavelength peak ranging from 444 nm to 496 nm can be obtained by varying carbon/boron ratios from 0.1 to 0.9. In addition, the observations showed that the BCNO phosphor material has two excitation peaks located at the 365 nm (UV) and 420 nm (blue). Based on these observations, we believe that the citric acid derived BCNO phosphor particles can be a promising inexpensive material for phosphor conversion-based white LED.
Authors:
; ; ; ; ;  [1] ; ;  [2]
  1. Department of Physics, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Ganesha 10 Bandung, Indonesia 40132 (Indonesia)
  2. Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi Hiroshima, Japan 739-8527 (Japan)
Publication Date:
OSTI Identifier:
22391478
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1656; Journal Issue: 1; Conference: APS 2012: 5. Asian Physics Symposium, Bandung (Indonesia), 10-12 Jul 2012; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; BORON; BORON COMPOUNDS; CARBON; CARBON COMPOUNDS; CITRIC ACID; EMISSION SPECTRA; EXCITATION; NITROGEN; NITROGEN OXIDES; PARTICLES; PHOSPHORS; PHOTOLUMINESCENCE; TEMPERATURE DEPENDENCE; ULTRAVIOLET RADIATION