Title of article
Single-phased emission-tunable Ca3Si2O7:Ce3+, Eu2+ phosphors for white light-emitting diodes
Author/Authors
Haidong JU، نويسنده , , Lei Wang، نويسنده , , Baoling Wang، نويسنده , , Yinhai Ma، نويسنده , , Hai Wang، نويسنده , , Shibo Chen، نويسنده , , XUTANG TAO، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2013
Pages
5
From page
8001
To page
8005
Abstract
A series of single-phased emission-tunable Ca3Si2O7:Ce3+, Eu2+ phosphors has been prepared by the solid-state reaction method. The phosphors show two intense emission bands at about 450 nm and 610 nm, which are attributed to the 5d→4f transitions of Ce3+ and Eu2+ ions, respectively. The emission colors of Ca3Si2O7:Ce3+, Eu2+ phosphors vary from blue (0.148, 0.147) to white (0.309, 0.260), and eventually to orange (0.407, 0.319) by tuning the Eu2+/Ce3+ ratio. Energy transfer from Ce3+ to Eu2+ is studied by luminescence spectra and energy transfer efficiency. The results show an electric quadrupole–quadrupole interaction plays an important role in the process of energy transfer. The phosphors with tunable emission are suitable for application in white light-emitting diodes.
Keywords
Luminescence , energy transfer , Emission-tunable , Phosphors
Journal title
Ceramics International
Serial Year
2013
Journal title
Ceramics International
Record number
1275189
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