Diameter Scaling of the Optical Band Gap in Individual CdSe Nanowires

被引：37

作者：

Myalitsin, Anton ^{[1
]}

Strelow, Christian ^{[1
]}

Wang, Zhe ^{[1
]}

Li, Zhen ^{[1
,2
]}

Kipp, Tobias ^{[1
]}

Mews, Alf ^{[1
]}

机构：

[1] Univ Hamburg, Inst Phys Chem, D-20146 Hamburg, Germany

[2] Univ Queensland, ARC Ctr Excellence Funct Nanomat, Australian Inst Bioengn & Nanotechnol, Brisbane, Qld 4072, Australia

来源：

ACS NANO | 2011年 / 5卷 / 10期

关键词：

nanowires; CdSe; fluorescence; optical band gap; effective mass approximation; SEMICONDUCTOR NANOWIRES; QUANTUM DOTS; BLINKING; ELECTRON; INTERMITTENCY; MICROSCOPY; GROWTH; STATES; CELLS; WIRES;

D O I：

10.1021/nn202199f

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The diameter dependence of the optical band gap of single CdSe nanowires (NWs) is Investigated by a combination of atomic force microscopy, scanning fluorescence microscopy, and transmission electron microscopy. We find a good congruence of the experimental data to calculations within the effective mass approximation taking into account quantization, exciton Coulomb interaction, and dielectric mismatch. The experimental data are furthermore compared to different theoretical approaches. We discuss the influence of alternating wurtzite and zinc blende segments along the NWs on their optical properties.

引用

页码：7920 / 7927

页数：8

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