Surface and size effects and energy transfer phenomenon on the luminescence of nanocrystalline X1-Y2SiO5:Eu3+

被引：35

作者：

Duan, CK ^{[1
]}

Yin, M

Yan, K

Reid, MF

机构：

[1] Univ Canterbury, Dept Phys & Astron, Christchurch 1, New Zealand

[2] Chongqing Univ Post & Telecommun, Chongqing 400065, Peoples R China

[3] Univ Sci & Technol China, Dept Phys, Hefei 230026, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2000年 / 303卷

关键词：

luminescence; nanocrystal; energy transfer;

D O I：

10.1016/S0925-8388(00)00643-5

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Optical luminescence of nanocrystalline Y2-xEuxSiO5 arises from four distinct sites. We shaw that one previously uncharacterized sites is a Eu3+ ion near the surface of the nanocrystal. The energy transfer rate between the two main sites varies with temperature and Eu3+ concentration and the dynamics of this transfer is explained theoretically. Luminescent quenching occurs at a much higher concentration and stronger luminescent intensity than in bulk Y2SiO5Eu3+. This is due to the hindering effects of particle boundaries to energy transfer. (C) 2000 Elsevier Science S.A. All rights reserved.

引用

页码：371 / 375

页数：5

共 9 条

[1] ENERGY LEVELS AND INTERACTION BETWEEN EU-3+-IONS AT LATTICE SITES OF SYMMETRY C2 AND SYMMETRY C3I IN Y2O3 [J].

HEBER, J ;

HELLWEGE, KH ;

KOBLER, U ;

MURMANN, H .

ZEITSCHRIFT FUR PHYSIK, 1970, 237 (03) :189-&

[2]

Holstein T., 1981, Laser spectroscopy of solids, P39

[3]

*JCPDS, 211456 JCPDS ASTM

[4]

*JCPDS, 414 JCPDS ASTM

[5] SPECTROSCOPIC PROPERTIES AND FLUORESCENCE DYNAMICS OF ER-3+ AND YB-3+ IN Y2SIO5 [J].

LI, C ;

WYON, C ;

MONCORGE, R .

IEEE JOURNAL OF QUANTUM ELECTRONICS, 1992, 28 (04) :1209-1221

[6]

OZAWA L, 1971, J ELECTROCHEM SOC, V118, P42

[7] CATHODOLUMINESCENT LNY(SIO2)X - TB PHOSPHORS [J].

PETERS, TE .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1969, 116 (07) :985-&

[8] Luminescence of nanometric scale Y2SiO5:Eu-3 [J].

Yin, M ;

Zhang, W ;

Xia, S ;

Krupa, JC .

JOURNAL OF LUMINESCENCE, 1996, 68 (06) :335-339

[9] Preparation and size effect on concentration quenching of nanocrystalline Y2SiO5:Eu [J].

Zhang, WP ;

Xie, PB ;

Duan, CK ;

Yan, K ;

Yin, M ;

Lou, LR ;

Xia, SD ;

Krupa, JC .

CHEMICAL PHYSICS LETTERS, 1998, 292 (1-2) :133-136

← 1 →