Photoluminescence properties of SrAl2O4:Eu2+ phosphors

다국어 초록 (Multilingual Abstract)

An alkaline earth aluminate-based SrAl2O4:Eu2+ phosphor was prepared by solid-state reaction at 1300-1500 oC in a reduced atmosphere. The prepared SrAl2O4:Eu2+ phosphors were found to exhibit a monoclinic phase in crystal structure and any secondary phase formation by the Eu2+ addition was not detected. Symmetric single broad band photoluminescence (PL) emission spectra centered at ~514 nm due to the 4f6 5d1 → 4f7 (8 S7/2) transition wsere obtained from the SrAl2O4:Eu2+ phosphors, which indicates the doped Eu2+ ions occupied only one type of site in the SrAl2O4 lattice and the formation of one corresponding Eu2+ emission luminescent center. PL emission intensity showed a strong dependence on the Eu2+ doping concentration and the strongest emission was observed for the 7 mol% Eu2+-doped SrAl2O4 phosphor. Dynamic light scattering (DLS) and field-effect scanning electron microscopy (FE-SEM) characterization revealed that the 7 mol% Eu2+-doped SrAl2O4 phosphor particles have an irregularly round shape and an average particle size of ~4 μm.

참고문헌 (Reference)

1 M. Gong, 53-54, 2010

2 J.H. Ryu, 13 : 6086-6088, 2013

3 K. Tanaka, 88 : 4069-4074, 2000

4 X.-F. Xu, 502 : 38-42, 2010

5 Z. Fu, 143 : 657-662, 2013

6 W.N. Wang, 19 : 1723-1730, 2007

7 C.-H. Huang, 50 : 5725-5730, 2011

8 W. Chen, 61 : 11021-11024, 2000

9 W. Chen, 103 : 113103-, 2008

10 Y.K. Solanki, 1 : 10-12, 2014

11 M. Nazarov, 573 : 6-10, 2013

12 R.K. Tamrakar, 6 : 28-31, 2017

13 X. Li, 3 : 778-788, 2015

14 L. Chen, 47 : 4071-4075, 2012

15 M. Nazorov, 182 : 79-86, 2017

16 G. Ju, 415 : 1-4, 2013

17 K. Fukuda, 11-12 : 43-46, 2005