Eur. Phys. J. Appl. Phys.
Volume 71, Number 3, September 2015
|Number of page(s)||6|
|Published online||25 August 2015|
Effect of pulverising process on the luminescence properties of Sr2MgSi2O7:Eu2+, Dy3+
School of Materials Science and Engineering, Wuhan University of Technology, 430070
Wuhan, P.R. China
a e-mail: email@example.com
Revised: 7 June 2015
Accepted: 27 July 2015
Published online: 25 August 2015
Sr2MgSi2O7:Eu2+, Dy3+ was selected to study the effect of pulverising process on the luminescence properties. The samples were characterised by X-ray diffraction (XRD), photoluminescence (PL), decay curves, thermoluminescence spectra (TL), scanning electron microscopy (SEM) and energy dispersive spectrometers (EDS). Results show that the pulverising process has no obvious effect on the position of the peak in the excitation and emission spectra, and the long afterglow performance of Sr2MgSi2O7:Eu2+, Dy3+ phosphor is impaired gradually with the increase of specific surface area. When the specific surface area is below 3500 cm2/g, both the decay constant of the afterglow and the depth of trap increase simultaneously. Once the specific surface area is more than 3500 cm2/g, however, both of them remain almost constant. Further, the decrease of the density of traps shows a linear relationship with the specific surface area. In addition, the agglomeration of Dy3+ is clearly observed in the Sr2MgSi2O7:Eu2+, Dy3+ samples after smashing, and the element O tends to exist in the grain rather than on the grain surface.
© EDP Sciences, 2015
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.