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� 24 � � 4 � Vol.24 No.4
2 0 1 0 � 8 � CHINESE JOURNAL OF MATERIALS RESEARCH August 2 0 1 0
� � � � � �
Pr3+��� SrAl2O4 : Eu2+�Dy3+ �����
����� ∗
� ��(������������������ ������ �� 710021)
� ���� Pr3+ � SrAl2O4 : Eu2+�Dy3+ �������, ��� Pr3+ ����� � ��, �� SrAl2O4 ��������, ����� �� � , ��� 515 nm, �� ���� 320 nm
� 360 nm � � � Pr3+ ������������������, ����������� 3 � ��� �������, ���, SrAl2O4, ��, ������� O482, O614 ���� 1005-3093(2010)04-0343-05
Effect of Pr3+ on Luminescent Properties of SrAl2O4 : Eu2+,Dy3+ Phosphor Prepared by Combustion Synthesis
FAN Guodong∗∗ XIAO Guoping(Key laboratory of Auxiliary Chemistry & technology for Chemical Industry,
Ministry of Education, Shaanxi university of Science & technology, Xi′an Shanxi 710021)* Supported by Scientific and technological project in Shaanxi Province No.2008K07-32.Manuscript received May 5, 2010; in revised form May 26, 2010.** To whom correspondence should be addressed, Tel:(029)86168933, E–mail: [email protected]
ABSTRACT Pr3+ doped SrAl2O4�Eu2+, Dy3+ phosphor was synthesized by combustion method.The modification of optical properties of the sample has been investigated. X-ray diffraction patternindicates that the samples possess a monoclinic crystal structure. The emission spectra shows a continuousluminescence band with a peak at 515nm and excitation spectra shows two peaks at 320 and 360 nm. Thedecay curves show that the initial intensity is three times before doping praseodymium. The morphologyshows praseodymium has a great role in formating uniform grain size solid solution in SrAl2O4 : Eu2+,Dy3+, Pr3+ phosphor.
KEY WORDS inorganic non-metallic materials, combustion, SrAl2O4, Pr3+ doping, luminous materials
�������, ���������������������������������, ���������, ������� �����������!�: �����!����������, " ZnS : Cu, Co �"#$� �����!������� ��, " SrAl2O4 : Eu, Dy �"# ������������������%!�������� 10 &"�, � #!!""�'��#
* �$�# !"% 2008K07-32 ��$# (&��!)'#�$%% 2010 " 5 & 5 #$*�$+2010 " 5 & 26 #$*(%$ ,)$�%: &'(, %&
'*)'+*�#-Æ. �"Æ�������(/��,0 [1]'��1& [2] ���-� [3,4]
'()�.+/)',(2���� ������� 3�4,Æ*2�0+��, (!*1),
,-*2(+.-,����-�, /��#�3
. [5] 0), [6−12], �Æ(1�0)./���Æ�/ �0)./0+,, 0+�56120+�.2.��.0, 17�2!4�0+ 34,83'4��/�, #5!�+)(0 9 :-�5, 5'6;-�76��.����8��Æ# [13] 1/)72 – Æ2,(2 Sr3Al2O6 : Eu2+'Pr3+ ��
5, Pr3+ �386�, Sr3Al2O6 : Eu2+ ���#� [14] <7)0),./ Pr3+ ;-� SrAl2O4 :
344 � � � � � � 24�344 � � � � � � 24�344 � � � � � � 24�
Eu2+'Dy3+, �� Pr3+ ;-Æ9��#��08 1 ����
=��4!>�:�9?� Al(NO3)3·9H2O'Sr(NO3)2' H3BO3' H2NCONH2' Eu2O3(4N)'Dy2O3(4N) � Pr4O7(4N), 9, H3BO3 �;9@�:!� 3%, <=1:� �;9>� 7 : 1, Pr3+ �;-! x �A� 0'0.13%'0.17%'0.23% � 0.30% Æ��;��72>!�:�?/73, Æ:�.':��'<=�5�;.B� 80 CD56E 30 min
?(/� 473 Æ�473;.�� 80 CD56E 2 h,</�@�73,Æ9A8;��56�=>78 600 C7<8, 4�?8B��9�, 739CD::E !; 3–4 min ��'�;17!!�F� (=;�@'FF'GF), <=�;�><0+�7?HG2A, B17!!�2, =@0)AI�BH>�B/ 0)'I�J6K?G@C><?�JKEL?L�, :7'AMB�C�DJ Pr3+ ;-� SrAl2O4 : Eu2+'Dy3+ �����/�
)N<B� D/max2200PC � X �DE�@�9FO�'E, CuKα *�, FG� 40 kV, GC�
20 mA ) FluoroMax–4 �Æ�����4 (���
A�B�) MPFO����Q'���Q���R*SD, ) Quanta250 FEG �TDG!HIEHNFO�IH<F
2 ����2.1 Pr3+ C SrAl2O4 : Eu2+'Dy3+ D��E !
J 1 #GOK3 Pr3+ �PFP,F-/SrAl2O4, >#Q� SrAl4O7 -/ ?8 Pr3+ �38,
PF, SrAl4O7/L2 31.2◦ R-H�ÆGE�IHI*U, J SrAl2O4 /�E�II� S Pr3+ �;-! x=0.17% �, SrAl4O7 �ÆGE�IMV, E�
JQ1 SrAl2O4 � PDF TJJW (34–0379) Æ+�K�N., -L�X� a=0.84424 nm; b=0.8822 nm;
c=0.516 nm, β=93.415◦, KG./�FO� SrAl2O4
?/, '-KM, �UO-� L�I3 Pr3+ �;-!, SrAl2O4 L2 28.4◦ � 29.9◦ R�E�I.V, Y
! SrAl4O7 �ÆGE�ILP75 Pr3+ �;-! x=0.17% � 600 CMQ0+, �
./7>�BR�-�'E MJ 1 �"N7, ;-��N=O#7W���-�'E M4�P, )0),(2 SrAl2O4 : Eu2+'Dy3+ ����, ;->!� Pr3+ #Q2</ SrAl2O4 ?/, Y!NA!;-R75-/
# 1 O7, SrAl2O4 � 5 @F0E�I (011)'(−211)'(221)'(211)'(031)�-(XY89ZRO �P, (2������-(R�[SXY 2.2 Pr3+ C SrAl2O4 : Eu2+'Dy3+ P"D�#P$P%"&E !
J 2 �;- Pr3+ (�./FO����Q S;- Pr3+ ����Q�\I���/S, ;- Pr3+
�L2 360 nm �IGHI�, JL2 320 nm �I#T3., 1�.+/,(2�FOGHOU T] Matsuzawa - [15] )�.+/,./� SrAl2O4 :
' 1 ZV Pr3+ [QU\W^\ XRD X_
Fig.1 X–ray diffraction patterns of samples doped
with different Pr3+ additive (a) 0; (b) 0.13%;
(c) 0.17%; (d) 0.23%; (e) 0.30%
R 1 ZV Pr3+ [QUW^\VW]^Table 1 Crystallite size of samples doped with different Pr3+ additive
Crystallite size/nm the average crystalliteNumber
D011 D−211 D220 D211 D031 size/nm
1 30.5 25.4 37.9 27.4 26.5 29.5
2 31.3 28.5 35.4 26.8 25.4 29.5
3 33.0 29.1 30.8 32.1 26.9 29.5
4 33.0 29.1 31.9 28.7 26.3 29.8
5 33.7 30.4 34.6 32.6 26.6 31.6
4 � PQR_:Pr3+ [QS SrAl2O4 : Eu2+ D̀y3+ XTYUTZ`\S[ 3454 � PQR_:Pr3+ [QS SrAl2O4 : Eu2+ D̀y3+ XTYUTZ`\S[ 3454 � PQR_:Pr3+ [QS SrAl2O4 : Eu2+ D̀y3+ XTYUTZ`\S[ 345
' 2 W^\VUT_Fig.2 Exission spectra of samples (a) samples doped
without Pr3+ additive;
' 3 W^\UaT_Fig.3 Emission spectra of samples (b) samples doped
with Pr3+ additive
Eu2+, Dy3+, 9���Q� @WIOY�ZaQ,
FIOL2 365 nm, bIO�AL2 270'330 nm 1TÆ>�5, FI�LU[7 5 @ nm, ���(24,�OUTV
J 3 �T#FOc) 360 nm d�������Q �9#GFO����QIOL2 515 nm,
#ZaÆG 1�.+/,./� SrAl2O4 : Eu2+,
Dy3+ ���Q (IOLU 520 nm) >�, �5��
�QIOLUGH\�d4\7X 9<W���,
0),�./����, -(XY�2, X+�e�60–90 nm 2-(�!!XY"+fV�a]WZ,
gJ/I�LU[7 FO����Q����Q#G, Y�h�
� Eu2+ ��,^G!� 4f65d–4f7 Zb [16], 1Ravichandran- [17] )Id,./ SrAl2O4 : Eu2+'Dy3+ ��������QK�N. ?8 4f–5d
' 4 W^\[Yc\d_Fig.4 Decay curves of samples (a) samples doped
without Pr3+ additive; (b) amples doped with
Pr3+ additive
G!\.])�I�, 4f65d→4f7 `�Z�[HIW2, ]^� Eu2+ �i� 5d \je6-�]_�085�aL, ^3�^'-L�`Q_X/ 4f65d ;
.�!M�a��ZW�Y���a, /���Q�
���Qk5Za�ÆG �FO���Q,S75 Eu3+ �ÆG��I, #G0)AI, Eu3+ `B3><� Eu2+[18,19] 2.3 Pr3+ C SrAl2O4 : Eu2+'Dy3+ P"D�()*+E !
gJ 4 �"N7, ;- Pr3+ �FO9����1O;- Pr3+ �/lOW, 3��R*AI,;-Pr3+ �FO��b�>O;- Pr3+ �M (!;�93 &) ����:c2mn��Zba,�G!X!89_`��`�Z�>", ����:c2�Zba,�G!�UL���_`��`�Z�>" JYca1�Zba�fg#b, W;-���OU9�Z�fg#TOU ���������>1dh��!#b ?8(+�*2, G!X5��I3fVc!�a], W4e0c���!d�� eb, )����mn,cW��!, /���b�6� 2.4 Pr3+ C SrAl2O4 : Eu2+'Dy3+ P"D�,-./E !
O;- Pr3+ �FO, c)�ij� kJO#</f( (J 5a);;- Pr3+ �FO-�'-�KM,
�U /+7�'E (J 5b) Yc'd1 XRD ��9 V 3�f(!2ORd, ���0)�f(
�l,1) 1)��l, ���-(�#H�ORde/�mc4\-H�-��f�l�TV
346 � � � � � � 24�346 � � � � � � 24�346 � � � � � � 24�
' 5 W^\feggXFig.5 SEM morphologies of the samples (a) samples doped without Pr3+ additive; (b) samples doped
with Pr3+ additive
3 Æ �)0)./,�(2 Pr3+;- SrAl2O4 : Eu2+,
Dy3+ �������, Pr3+ ;-#Q2</'-�KM�U /'E+7� S;- Pr3+ �;9�X� 0.17% �, ./�FO� (UO-�) U/SrAl2O4 FO����Q�Y�ZaQ, IOL2515 nm, ���Q�IO� 320'360 nm �Y�ZaQ, 1O#;- Pr3+ � SrAl2O4 : Eu2+'Dy3+ ��Q V FO,� Eu2+ ���h���,^, J
Dy3+ � Pr3+ �fg���!, ]� 4ba#Q26���b� Pr ;-��.�����O#h!�08, 3GH6���.�oC��b�, !;�S;-�� 3 &
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