The study of time-resolved absorption and luminescence in PbWO4 crystals

被引：23

作者：

Grigorjeva, L

Millers, D

Chernov, S

Nikl, M

Usuki, Y

Pankratov, V

机构：

[1] Latvian State Univ, Inst Solid State Phys, LV-10663 Riga, Latvia

[2] CAS, Inst Phys, Prague 16200, Czech Republic

[3] Furukawa Elect Corp Ltd, Iwaki, Fukushima, Japan

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2000年 / 166卷

关键词：

PbWO4; PbWO4-La3+; luminescence; transient absorption;

D O I：

10.1016/S0168-583X(99)00772-7

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The transient absorption and luminescence under pulsed electron beam excitation were studied for undoped and La3+ doped PbWO4 crystals. The absorption band at similar to 1.0 eV is suggested to be due to self-trapped electrons and the absorption baud at 3.5 eV may be due to self-trapped holes. The formation of luminescence centers via electron-hole recombination is affected by La3+ in doped crystals. The large fraction of electrons and holes undergoes thermostimulated recombination within geminate pairs and the spatial separation of geminate pairs components is important in recombination process. The intrinsic (blue) luminescence arises in this recombination. The mechanism of La3+ influence on recombination is discussed. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：329 / 333

页数：5

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