Light-induced relaxation dynamics in Rh-doped Bi12TiO20 crystals

被引：1
作者：
Marinova, V. [1 ]
Vlaikova, E. [2 ]
Goovaerts, E. [3 ]
机构：
[1] Bulgarian Acad Sci, Inst Opt Mat & Technol, BU-1113 Sofia, Bulgaria
[2] Bulgarian Acad Sci, Inst Solid State Phys, Sofia 1764, Bulgaria
[3] Univ Antwerp, Dept Phys, Expt Condensed Matter Phys, B-2610 Antwerp, Belgium
来源：
18TH INTERNATIONAL SCHOOL ON CONDENSED MATTER PHYSICS: CHALLENGES OF NANOSCALE SCIENCE: THEORY, MATERIALS, APPLICATIONS | 2014年 / 558卷
关键词：
ABSORPTION; HOLOGRAPHY;
D O I：
10.1088/1742-6596/558/1/012031
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The lifetime of the excited charge carriers in Rh-doped BTO crystals is characterized by measuring the time-resolved photoinduced absorption (PIA) after nanosecond pulse excitation from a frequency doubled Nd:YAG laser (lambda = 532 nm). It was found that the Rh-addition in the BTO structure slows down the relaxation decay in comparison with non-doped BTO, which is attributed to additional trapping centers related to the rhodium dopant. The experimental curve is well fitted by a double-exponential decay which is ascribed to the presence of two different shallow traps contributing to the charge transport and recombination mechanisms in Rh-doped BTO crystal.
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页数：6
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