A novel blue-emitting silica-coated KBaPO4:Eu2+ phosphor under vacuum ultraviolet and ultraviolet excitation
Creators
- 1. Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon 305-701 (Korea, Republic of)
- 2. Korea Research Institute of Standards and Science, P.O. Box 102, Yuseong, Daejeon 305-600 (Korea, Republic of)
Description
An intense blue-emitting phosphor KBaPO4:Eu2+ was synthesized by a solid-state reaction method. The crystal structure of KBaPO4:Eu2+ was refined using neutron diffraction data by Rietveld refinement for the first time. KBa0.99Eu0.01PO4 composition shows intense blue emission (peak wavelength, 420 nm) with relative intensity vs commercial BaMgAl10O17:Eu2+ blue phosphor (Nichia) 65%, 122% and 108% under 147, 254 and 365 nm excitation, respectively. In addition, by applying a nano-sized silica coating on the phosphor surface, excellent moisture resistance of KBP:Eu2+ was obtained. Due to its intense blue emission and excellent color purity (0.1606, 0.0271), it is very potent as a blue-emitting phosphor for PDPs, CCFLs, and pc-white LEDs based on near UV LED
Availability note (English)
Available from http://dx.doi.org/10.1016/j.matchemphys.2008.11.050Additional details
Identifiers
- DOI
- 10.1016/j.matchemphys.2008.11.050;
- PII
- S0254-0584(08)00956-5;
Publishing Information
- Journal Title
- Materials Chemistry and Physics
- Journal Volume
- 115
- Journal Issue
- 1
- Journal Page Range
- p. 161-164
- ISSN
- 0254-0584
- CODEN
- MCHPDR
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 40068633
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- BARIUM PHOSPHATES; COATINGS; CRYSTAL STRUCTURE; EUROPIUM IONS; EXCITATION; LUMINESCENCE; MOISTURE; NANOSTRUCTURES; NEUTRON DIFFRACTION; POTASSIUM PHOSPHATES; SILICA; SURFACES; ULTRAVIOLET RADIATION
- Descriptors DEC
- ALKALI METAL COMPOUNDS; ALKALINE EARTH METAL COMPOUNDS; BARIUM COMPOUNDS; CHARGED PARTICLES; COHERENT SCATTERING; DIFFRACTION; ELECTROMAGNETIC RADIATION; EMISSION; ENERGY-LEVEL TRANSITIONS; IONS; MINERALS; OXIDE MINERALS; OXYGEN COMPOUNDS; PHOSPHATES; PHOSPHORUS COMPOUNDS; PHOTON EMISSION; POTASSIUM COMPOUNDS; RADIATIONS; SCATTERING
Optional Information
- Copyright
- Copyright (c) 2008 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.