Room-temperature single-photon emission from zinc oxide nanoparticle defects and their in vitro photostable intrinsic fluorescence

被引：20

作者：

Chung, Kelvin ^{[2
]}

Karle, Timothy J. ^{[1
,2
]}

Khalid, Asma ^{[2
]}

Abraham, Amanda N. ^{[3
]}

Shukla, Ravi ^{[3
]}

Gibson, Brant C. ^{[2
]}

Simpson, David A. ^{[2
]}

Djurisic, Aleksandra B. ^{[4
]}

Amekura, Hiroshi ^{[5
]}

Tomljenovic-Hanic, Snjezana ^{[2
]}

机构：

[1] Florey Inst Neurosci & Mental Hlth, Parkville, Vic 3052, Australia

[2] Univ Melbourne, Sch Phys, Parkville, Vic 3010, Australia

[3] RMIT Univ, Sch Appl Sci, Melbourne, Vic 3001, Australia

[4] Univ Hong Kong, Dept Phys, Pokfulam Rd, Hong Kong, Hong Kong, Peoples R China

[5] Natl Inst Mat Sci, 3-13 Sakura, Tsukuba, Ibaraki 3050003, Japan

来源：

NANOPHOTONICS | 2017年 / 6卷 / 01期

关键词：

zinc oxide; optical defects; single-photon emitters; intrinsic fluorescence; HaCaT cells; ZNO NANOPARTICLES; OPTICAL-PROPERTIES; PHOTOCATALYTIC ACTIVITY; GREEN LUMINESCENCE; THERMAL-OXIDATION; COLOR-CENTERS; GROWTH; FILMS; NANORODS; PHOTOLUMINESCENCE;

D O I：

10.1515/nanoph-2015-0138

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Zinc oxide (ZnO) is a promising semiconductor that is suitable for bioimaging applications due to its intrinsic defect fluorescence. However, ZnO generally suffers from poor photostability. We report room-temperature single-photon emission from optical defects found in ZnO nanoparticles (NPs) formed by ion implantation followed by thermal oxidation in a silica substrate. We conduct a thorough investigation into the photophysics of a particularly bright defect and identify other single emitters within the NPs. Photostability was observed when the NPs were removed from the growth substrate and taken up by skin cells for in vitro imaging.

引用

页码：269 / 278

页数：10