Journal
OPTICAL MATERIALS
Volume 36, Issue 3, Pages 723-726Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.optmat.2013.11.010
Keywords
K2Ca2Si2O7:Ce3+; Optical properties
Categories
Funding
- National Natural Science Foundations of China [51002146, 51272242]
- Natural Science Foundations of Beijing [2132050]
- Program for New Century Excellent Talents in University of Ministry of Education of China [NCET-12-0950]
- Fundamental Research Funds for the Central Universities [2011YYL131]
- Beijing Nova Program [Z131103000413047]
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A novel blue-emitting phosphor K2Ca2Si2O7:Ce3+ has been synthesized via a solid-state reaction. The pure phase structure of K2Ca2Si2O7:Ce3+ phosphor was investigated by using the XRD technique and Rietveld refinement. K2Ca1.98Si2O7:0.02Ce(3+) phosphor exhibited broad-band blue emission peaking at 413 nm upon 291 nm excitation and 423 nm upon 338 nm excitation. The critical quenching concentration of Ce3+ was determined about 2 mol% and the corresponding concentration quenching mechanism was considered to be the dipole-dipole interaction. The double-exponential fluorescence decay curve was also discussed to verify the two kinds of Ce3+ centre in K2Ca2Si2O7 host. (C) 2013 Elsevier BM. All rights reserved.
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