Stimulated emission from ZnO nanorods

被引：40

作者：

Hauschild, R

Lange, H

Priller, H

Klingshirn, C

Kling, R

Waag, A

Fan, HJ

Zacharias, M

Kalt, H

机构：

[1] Univ Karlsruhe, TH, Inst Angew Phys, D-76128 Karlsruhe, Germany

[2] Univ Ulm, Abt Halbleiterphys, D-89081 Ulm, Germany

[3] Tech Univ Carolo Wilhelmina Braunschweig, Inst Halbleitertech, D-38106 Braunschweig, Germany

[4] Max Planck Inst Mikrostrukturphys, D-06120 Halle, Germany

来源：

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS | 2006年 / 243卷 / 04期

关键词：

D O I：

10.1002/pssb.200564718

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

By means of time resolved spectroscopy we compare two samples of ZnO nanorods with respect to their suitability as stimulated emitters. In the case of narrow nanorods their wave guiding quality causes a suppression of exciton-exciton scattering whereas no laser emission is detectable. Unlike their narrow counterparts, wide nanorods not only benefit from a larger overlap of the guided mode with the gain medium but a variation in VLS growth results in gold nanoparticles being present at the bottom of nanorods. Consequently, laser emission from single wide rods is evidenced up to 150 K. In addition to experimental studies we carry out 3D numerical simulations of the electric field distribution to evaluate the influence of gold nanoparticles at the nanorod/substrate interface. This finite element analysis confirms that gold leads to an enhancement of confinement within the resonator. (c) 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

引用

页码：853 / 857

页数：5

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