Effects of surroundings on upconversion luminescent properties of rare earth luminescence centers

Jiayin Zhang; Feng Qin; Hua Zhao; Xin Yang; Xitian Zhang; Xuanzhang Wang; Hong Gao; Zhiguo Zhang; Wenwu Cao

doi:10.1039/c4ce01441c

Effects of surroundings on upconversion luminescent properties of rare earth luminescence centers

Jiayin Zhang
, Feng Qin
, Hua Zhao
, Xin Yang
, Xitian Zhang
, Xuanzhang Wang
, Hong Gao
, Zhiguo Zhang
, Wenwu Cao

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

A special core/shell/shell structured NaYF₄/NaYF₄:Yb³⁺,Er³⁺/NaYF₄ (CSS) nanocrystal was designed to ensure each luminescence center in the emitting shell had the same surroundings. The nanocrystal includes a support core NaYF₄ nanoparticle in the center coated by a thin emitting shell NaYF₄:Yb³⁺,Er³⁺ and another NaYF₄ shell with adjustable thickness as the outer shielding shell. The green upconversion fluorescence intensity I_g(d) of the CSS nanoparticles shows an exponential relationship with the thickness d of the shielding shell. When d decreased to 0, I_g(0) was ~356 times smaller than I_g(∞) due to the drastic fluorescence quenching of the rare earth luminescence centers by the surroundings. Our experimental results indicate that ~90% of the severe effect of the surroundings can be eliminated by coating with a ~4 nm-thick NaYF₄ shielding shell.

Original language	English (US)
Pages (from-to)	9974-9978
Number of pages	5
Journal	CrystEngComm
Volume	16
Issue number	43
DOIs	https://doi.org/10.1039/c4ce01441c
State	Published - Nov 21 2014

All Science Journal Classification (ASJC) codes

General Chemistry
General Materials Science
Condensed Matter Physics

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10.1039/c4ce01441c

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title = "Effects of surroundings on upconversion luminescent properties of rare earth luminescence centers",

abstract = "A special core/shell/shell structured NaYF4/NaYF4:Yb3+,Er3+/NaYF4 (CSS) nanocrystal was designed to ensure each luminescence center in the emitting shell had the same surroundings. The nanocrystal includes a support core NaYF4 nanoparticle in the center coated by a thin emitting shell NaYF4:Yb3+,Er3+ and another NaYF4 shell with adjustable thickness as the outer shielding shell. The green upconversion fluorescence intensity Ig(d) of the CSS nanoparticles shows an exponential relationship with the thickness d of the shielding shell. When d decreased to 0, Ig(0) was \textasciitilde{}356 times smaller than Ig(∞) due to the drastic fluorescence quenching of the rare earth luminescence centers by the surroundings. Our experimental results indicate that \textasciitilde{}90\% of the severe effect of the surroundings can be eliminated by coating with a \textasciitilde{}4 nm-thick NaYF4 shielding shell.",

author = "Jiayin Zhang and Feng Qin and Hua Zhao and Xin Yang and Xitian Zhang and Xuanzhang Wang and Hong Gao and Zhiguo Zhang and Wenwu Cao",

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doi = "10.1039/c4ce01441c",

language = "English (US)",

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TY - JOUR

T1 - Effects of surroundings on upconversion luminescent properties of rare earth luminescence centers

AU - Zhang, Jiayin

AU - Qin, Feng

AU - Zhao, Hua

AU - Yang, Xin

AU - Zhang, Xitian

AU - Wang, Xuanzhang

AU - Gao, Hong

AU - Zhang, Zhiguo

AU - Cao, Wenwu

PY - 2014/11/21

Y1 - 2014/11/21

N2 - A special core/shell/shell structured NaYF4/NaYF4:Yb3+,Er3+/NaYF4 (CSS) nanocrystal was designed to ensure each luminescence center in the emitting shell had the same surroundings. The nanocrystal includes a support core NaYF4 nanoparticle in the center coated by a thin emitting shell NaYF4:Yb3+,Er3+ and another NaYF4 shell with adjustable thickness as the outer shielding shell. The green upconversion fluorescence intensity Ig(d) of the CSS nanoparticles shows an exponential relationship with the thickness d of the shielding shell. When d decreased to 0, Ig(0) was ~356 times smaller than Ig(∞) due to the drastic fluorescence quenching of the rare earth luminescence centers by the surroundings. Our experimental results indicate that ~90% of the severe effect of the surroundings can be eliminated by coating with a ~4 nm-thick NaYF4 shielding shell.

AB - A special core/shell/shell structured NaYF4/NaYF4:Yb3+,Er3+/NaYF4 (CSS) nanocrystal was designed to ensure each luminescence center in the emitting shell had the same surroundings. The nanocrystal includes a support core NaYF4 nanoparticle in the center coated by a thin emitting shell NaYF4:Yb3+,Er3+ and another NaYF4 shell with adjustable thickness as the outer shielding shell. The green upconversion fluorescence intensity Ig(d) of the CSS nanoparticles shows an exponential relationship with the thickness d of the shielding shell. When d decreased to 0, Ig(0) was ~356 times smaller than Ig(∞) due to the drastic fluorescence quenching of the rare earth luminescence centers by the surroundings. Our experimental results indicate that ~90% of the severe effect of the surroundings can be eliminated by coating with a ~4 nm-thick NaYF4 shielding shell.

UR - https://www.scopus.com/pages/publications/84907979916

UR - https://www.scopus.com/pages/publications/84907979916#tab=citedBy

U2 - 10.1039/c4ce01441c

DO - 10.1039/c4ce01441c

M3 - Article

AN - SCOPUS:84907979916

SN - 1466-8033

VL - 16

SP - 9974

EP - 9978

JO - CrystEngComm

JF - CrystEngComm

IS - 43

ER -

Effects of surroundings on upconversion luminescent properties of rare earth luminescence centers

Abstract

All Science Journal Classification (ASJC) codes

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