Color tuning in a compact core-she nanocrystal based on intense and high-purity green and red photon upconversion

被引：8

作者：

Zhou, Ziwen ^{[1
,2
]}

Liu, Yu ^{[1
,2
]}

Sun, Xianhao ^{[1
,2
]}

Xu, Li ^{[1
,2
]}

Khan, Fahim ^{[1
,2
]}

Li, Yanzeng ^{[3
]}

Li, Li ^{[1
,2
]}

Li, Hanyang ^{[1
,2
]}

Ren, Jing ^{[1
,2
]}

Zhang, Jianzhong ^{[1
,2
]}

Liu, Lu ^{[1
,2
]}

机构：

[1] Harbin Engn Univ, Key Lab In Fiber Integrated Opt, Minist Educ China, Harbin 150001, Peoples R China

[2] Harbin Engn Univ, Coll Phys & Optoelect Engn, Harbin 150001, Peoples R China

[3] Univ Chicago, James Franck Inst, 5640 S Ellis Ave, Chicago, IL 60637 USA

来源：

OPTICS LETTERS | 2021年 / 46卷 / 04期

关键词：

LUMINESCENCE; NANOPARTICLES; EXCITATIONS;

D O I：

10.1364/OL.412376

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

To date, color-tunable photon upconversion (UC) in a single nanocrystal (NC) still suffers from cumbersome structures. Herein, we prepared a compact two-layer NC with bright and high-purity red and green UC emission upon 980 and 1530 nm excitation, respectively. The effects of trace Tm3+ doping and inert-shell coating on the UC color and intensity were discussed. In addition, the color tuning via various dual-excitation configurations and the color stability with temperature and excitation intensity were demonstrated. The proposed UC NC, featuring compact structure and high-quality color tuning, can lower the synthesis time cost and difficulty of its kind and can find wide applications in multi-channel imaging, display devices, anti-counterfeiting, and so on. (C) 2021 Optical Society of America

引用

页码：900 / 903

页数：4

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