Quantum-confined single photon emission at room temperature from SiC tetrapods

被引：16

作者：

Castelletto, Stefania ^{[1
]}

Bodrog, Zoltan ^{[2
]}

Magyar, Andrew P. ^{[3
]}

Gentle, Angus ^{[4
]}

Gali, Adam ^{[2
,5
]}

Aharonovich, Igor ^{[4
]}

机构：

[1] RMIT Univ, Sch Aerosp Mech & Mfg Engn, Melbourne, Vic 3000, Australia

[2] Hungarian Acad Sci, Inst Solid State Phys & Opt, Wigner Res Ctr Phys, H-1525 Budapest, Hungary

[3] Harvard Univ, Ctr Nanoscale Syst, Cambridge, MA 02138 USA

[4] Univ Technol Sydney, Sch Phys & Adv Mat, Ultimo, NSW 2007, Australia

[5] Budapest Univ Technol & Econ, Dept Atom Phys, H-1111 Budapest, Hungary

来源：

NANOSCALE | 2014年 / 6卷 / 17期

基金：

匈牙利科学研究基金会; 美国国家科学基金会; 澳大利亚研究理事会;

关键词：

NANOCRYSTALS; GROWTH; INP; POLARIZATION; NANOWIRES; GAAS;

D O I：

10.1039/c4nr02307b

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Controlled engineering of isolated solid state quantum systems is one of the most prominent goals in modern nanotechnology. In this letter we demonstrate a previously unknown quantum system namely silicon carbide tetrapods. The tetrapods have a cubic polytype core (3C) and hexagonal polytype legs (4H) - a geometry that creates spontaneous polarization within a single tetrapod. Modeling of the tetrapod structures predicts that a bound exciton should exist at the 3C-4H interface. The simulations are confirmed by the observation of fully polarized and narrowband single photon emission from the tetrapods at room temperature. The single photon emission provides important insights into understanding the quantum confinement effects in non-spherical nanostructures. Our results pave the way to a new class of crystal phase nanomaterials that exhibit single photon emission at room temperature and therefore are suitable for sensing, quantum information and nanophotonics.

引用

页码：10027 / 10032

页数：6

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