Magneto-optical effects in photoluminescence of Si nanocrystals

被引：19

作者：

Heckler, H ^{[1
]}

Kovalev, D

Polisski, G

Zinov'ev, NN

Koch, F

机构：

[1] Tech Univ Munich, Phys Dept E16, D-85747 Garching, Germany

[2] AF Ioffe Physicotech Inst, St Petersburg 194021, Russia

来源：

PHYSICAL REVIEW B | 1999年 / 60卷 / 11期

关键词：

D O I：

10.1103/PhysRevB.60.7718

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report on magneto-optical studies of excitons confined in Si nanocrystallites. As a result of Zeeman splitting of the exciton ground level the whole resonantly excited photoluminescence spectrum shifts linearly to lower energy with rising magnetic field. The recombination decay time depends on magnetic field due to the change in the thermal populations of singlet-triplet sublevels of the exciton ground state. The effect is stronger for weakly confined excitons when the value of the Zeeman splitting becomes comparable with the electron-hole exchange energy. The experimental results strongly support the exciton nature of luminescing states responsible for the light emission from porous silicon. [S0163-1829(99)15631-5].

引用

页码：7718 / 7721

页数：4

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