Time resolved microphotoluminescence studies of single InP nanowires grown by low pressure metal organic chemical vapor deposition

被引:21
作者
Reitzenstein, S.
Muench, S.
Hofmann, C.
Forchel, A.
Crankshaw, S.
Chuang, L. C.
Moewe, M.
Chang-Hasnain, C.
机构
[1] Univ Wurzburg, Inst Phys, D-97074 Wurzburg, Germany
[2] Univ Calif Berkeley, Appl Sci & Technol Grp, Berkeley, CA 94720 USA
[3] Univ Calif Berkeley, Dept Elect Engn & Comp Sci, Berkeley, CA 94720 USA
基金
美国国家科学基金会;
关键词
D O I
10.1063/1.2776358
中图分类号
O59 [应用物理学];
学科分类号
摘要
The authors report optical studies of InP nanowires (NWs) grown by metal organic chemical vapor deposition. By means of low temperature microphotoluminescence experiments, the authors determined the optical properties of as-grown NWs. The emission of individual NWs is characterized by small linewidths as low as 2.3 meV. Blueshifts of the NW emission energy between 25 and 56 meV with respect to bulk InP are related to radial carrier confinement in nanowires with diameters between 15 and 50 nm. Time resolved investigations reveal a low surface recombination velocity of 6x10(2) cm/s and indicate thermally activated nonradiative surface recombination above approximately 20 K. (c) 2007 American Institute of Physics.
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页数:3
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