Fluorescent color centers in laser ablated 4H-SiC nanoparticles

被引：35

作者：

Castelletto, S. ^{[1
]}

Almutairi, A. F. M. ^{[1
]}

Thalassinos, G. ^{[2
]}

Lohrmann, A. ^{[3
]}

Buividas, R. ^{[4
]}

Lau, D. W. M. ^{[2
]}

Reineck, P. ^{[2
]}

Juodkazis, S. ^{[3
]}

Ohshima, T. ^{[5
]}

Gibson, B. C. ^{[2
]}

Johnson, B. C. ^{[3
]}

机构：

[1] RMIT Univ, Sch Engn, Melbourne, Vic 3001, Australia

[2] RMIT Univ, ARC Ctr Excellence Nanoscale Biophoton, Sch Appl Sci, Melbourne, Vic 3001, Australia

[3] Univ Melbourne, ARC Ctr Excellence Quantum Comp & Commun Technol, Sch Phys, Melbourne, Vic, Australia

[4] Swinburne Univ Technol, Fac Sci Engn & Technol, Ctr Microphoton, Hawthorn, Vic 3122, Australia

[5] Natl Inst Quantum & Radiol Sci & Technol QST, Takasaki, Gunma 3701292, Japan

来源：

OPTICS LETTERS | 2017年 / 42卷 / 07期

关键词：

SILICON-CARBIDE NANOCRYSTALS; QUANTUM DOTS; PHOTOLUMINESCENCE; LUMINESCENCE; FABRICATION; DEFECTS; PULSES; SPINS;

D O I：

10.1364/OL.42.001297

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Nanostructured and bulk silicon carbide (SiC) has recently emerged as a novel platform for quantum nanophotonics due to its harboring of paramagnetic color centers, having immediate applications as a single photon source and spin optical probes. Here, using ultra-short pulsed laser ablation, we fabricated from electron irradiated bulk 4H-SiC, 40-50 nm diameter SiC nanoparticles, fluorescent at 850-950 nm. This photoluminescence is attributed to the silicon vacancy color centers. We demonstrate that the original silicon vacancy color centers from the target sample were retained in the final nanoparticles solution, exhibiting excellent colloidal stability in water over several months. Our work is relevant for quantum nanophotonics, magnetic sensing, and biomedical imaging applications. (C) 2017 Optical Society of America

引用

页码：1297 / 1300

页数：4

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