LUMINESCENCE IN CAF2-EU

被引：38

作者：

DHOPTE, SM

MUTHAL, PL

KONDAWAR, VK

MOHARIL, SV

机构：

[1] NAGPUR UNIV,DEPT PHYS,NAGPUR 440010,MAHARASHTRA,INDIA

[2] NATL ENVIRONM ENGN RES INST,NAGPUR 440020,INDIA

来源：

JOURNAL OF LUMINESCENCE | 1992年 / 54卷 / 02期

关键词：

D O I：

10.1016/0022-2313(92)90252-5

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Results on photoluminescence, irradiation induced Eu3+ --> Eu2+ conversion, and thermoluminescence are reported for CaF2 : Eu phosphor subjected to various annealing temperatures. It is shown that depending upon the preparation conditions Eu can enter the CaF2 lattice in a variety of ways. Weak thermoluminescence was obtained despite strong Eu2+ --> Eu2+ conversion induced by the irradiation. It is argued that this fact goes against the earlier model proposed to explain TL in CaF2 : RE phosphors. An alternative model is proposed.

引用

收藏

页码：95 / 101

页数：7

相关论文

共 18 条

[1] EXCITON AND ELECTRON-HOLE MECHANISMS FOR ELECTRONIC EXCITATION MULTIPLICATION IN ALKALINE-EARTH FLUORIDE-CRYSTALS [J].

ALEKSANDROV, YM ;

MAKHOV, VN ;

SYREJSHCHIKOVA, TI ;

YAKIMENKO, MN .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1987, 261 (1-2) :158-160

[2]

CALEVERT RL, 1984, PHYS STATUS SOLIDI, V83, P597

[3] STUDY OF LOW-TEMPERATURE LUMINESCENCE AND THERMOLUMINESCENCE IN CALCIUM-FLUORIDE CRYSTALS [J].

CHAKRABARTI, K ;

MATHUR, VK ;

ABBUNDI, RJ ;

KRISTIANPOLLER, N ;

HORNYAK, WF .

JOURNAL OF LUMINESCENCE, 1991, 48-9 (pt 2) :828-832

[4] Fluorescence spectra of rare earth elements in artificial fluorides in their interpretation [J].

Chatterjee, Narayanchandra .

ZEITSCHRIFT FUR PHYSIK, 1939, 113 (1-2) :96-114

[5] IDENTIFICATION OF DEFECT STRUCTURES IN EU-3+-CAF2 BY SITE SELECTIVE SPECTROSCOPY OF RELAXATION DYNAMICS [J].

CIRILLOPENN, KM ;

WRIGHT, JC .

JOURNAL OF LUMINESCENCE, 1991, 48-9 :505-508

[6] ULTRAVIOLET-INDUCED CHARGE-TRANSFER IN CASO4-EU [J].

DANBY, RJ .

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1988, 21 (02) :485-494

[7] ON THE ROLE OF EUROPIUM IN CASO4-EU PHOSPHOR [J].

DHOPTE, SM ;

MUTHAL, PL ;

KONDAWAR, VK ;

MOHARIL, SV .

JOURNAL OF LUMINESCENCE, 1991, 50 (03) :187-195

[8] COMPARISON OF CALCIUM-FLUORIDE AND LANTHANUM FLUORIDE AS HOST LATTICES FOR THE DETERMINATION OF LANTHANIDES BY SELECTIVE EXCITATION OF PROBE ION LUMINESCENCE [J].

DOORN, SK ;

WRIGHT, JC .

ANALYTICAL CHEMISTRY, 1985, 57 (14) :2869-2873

[9]

HAMMERS RJ, 1982, J CHEM PHYS, V77, P683

[10] ULTRAVIOLET-ABSORPTION SPECTRA OF EUROPIUM AND YTTERBIUM IN ALKALINE EARTH FLUORIDES [J].

LOH, E .

PHYSICAL REVIEW, 1969, 184 (02) :348-&