Unique adjustable UC luminescence pattern and directional radiation of peculiar-shaped NaYF4: Yb3+/Er3+ microcrystal particle

Abstract A new design of peculiar-shaped β-NaYF4: 20% Yb3+/2% Er3+ hexagonal microcrystal (PSβHM) is proposed and its upconversion (UC) luminescence with adjustable color pattern is studied with near infrared excitation. Flower-like green UC luminescence emission pattern from blooming to withering p...

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Autores principales:	Qingyan Han, Chengyun Zhang, Chi Wang, Zhaojin Wang, Caixia Li, Wei Gao, Jun Dong, Enjie He, Zhenglong Zhang, Hairong Zheng
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/94d3437f2d7d4629832df73337ff6215
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spelling	oai:doaj.org-article:94d3437f2d7d4629832df73337ff62152021-12-02T16:06:02ZUnique adjustable UC luminescence pattern and directional radiation of peculiar-shaped NaYF4: Yb3+/Er3+ microcrystal particle10.1038/s41598-017-04519-62045-2322https://doaj.org/article/94d3437f2d7d4629832df73337ff62152017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-04519-6https://doaj.org/toc/2045-2322Abstract A new design of peculiar-shaped β-NaYF4: 20% Yb3+/2% Er3+ hexagonal microcrystal (PSβHM) is proposed and its upconversion (UC) luminescence with adjustable color pattern is studied with near infrared excitation. Flower-like green UC luminescence emission pattern from blooming to withering process and intensive directional red emission are achieved by simply adjusting the focal point position of the excitation light. The mechanism that determines the unique UC luminescence phenomena are investigated systematically. The function of the internal light reflection and waveguide effect with annular microcavity is explored based on the structure characteristic of the hexagonal microplate. The current work may have great significant and potential applications in the development of optoelectronic device, color display, directional light and laser emission of microsystem.Qingyan HanChengyun ZhangChi WangZhaojin WangCaixia LiWei GaoJun DongEnjie HeZhenglong ZhangHairong ZhengNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-8 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Qingyan Han Chengyun Zhang Chi Wang Zhaojin Wang Caixia Li Wei Gao Jun Dong Enjie He Zhenglong Zhang Hairong Zheng Unique adjustable UC luminescence pattern and directional radiation of peculiar-shaped NaYF4: Yb3+/Er3+ microcrystal particle
description	Abstract A new design of peculiar-shaped β-NaYF4: 20% Yb3+/2% Er3+ hexagonal microcrystal (PSβHM) is proposed and its upconversion (UC) luminescence with adjustable color pattern is studied with near infrared excitation. Flower-like green UC luminescence emission pattern from blooming to withering process and intensive directional red emission are achieved by simply adjusting the focal point position of the excitation light. The mechanism that determines the unique UC luminescence phenomena are investigated systematically. The function of the internal light reflection and waveguide effect with annular microcavity is explored based on the structure characteristic of the hexagonal microplate. The current work may have great significant and potential applications in the development of optoelectronic device, color display, directional light and laser emission of microsystem.
format	article
author	Qingyan Han Chengyun Zhang Chi Wang Zhaojin Wang Caixia Li Wei Gao Jun Dong Enjie He Zhenglong Zhang Hairong Zheng
author_facet	Qingyan Han Chengyun Zhang Chi Wang Zhaojin Wang Caixia Li Wei Gao Jun Dong Enjie He Zhenglong Zhang Hairong Zheng
author_sort	Qingyan Han
title	Unique adjustable UC luminescence pattern and directional radiation of peculiar-shaped NaYF4: Yb3+/Er3+ microcrystal particle
title_short	Unique adjustable UC luminescence pattern and directional radiation of peculiar-shaped NaYF4: Yb3+/Er3+ microcrystal particle
title_full	Unique adjustable UC luminescence pattern and directional radiation of peculiar-shaped NaYF4: Yb3+/Er3+ microcrystal particle
title_fullStr	Unique adjustable UC luminescence pattern and directional radiation of peculiar-shaped NaYF4: Yb3+/Er3+ microcrystal particle
title_full_unstemmed	Unique adjustable UC luminescence pattern and directional radiation of peculiar-shaped NaYF4: Yb3+/Er3+ microcrystal particle
title_sort	unique adjustable uc luminescence pattern and directional radiation of peculiar-shaped nayf4: yb3+/er3+ microcrystal particle
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/94d3437f2d7d4629832df73337ff6215
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Unique adjustable UC luminescence pattern and directional radiation of peculiar-shaped NaYF4: Yb3+/Er3+ microcrystal particle

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