Effects of alkali metal ions on upconversion photoluminescence intensity of Er3+-doped Y2O3 nanocrystals

Lu Liu; Yuxiao Wang; Yunfeng Bai; Xueru Zhang; Kun Yang; Yinglin Song

doi:10.1007/s00340-012-5257-5

Effects of alkali metal ions on upconversion photoluminescence intensity of Er³⁺-doped Y₂O₃ nanocrystals

Lu Liu
, Yuxiao Wang
, Yunfeng Bai
, Xueru Zhang
, Kun Yang
, Yinglin Song^*

^*Corresponding author for this work

School of Physics

Harbin Institute of Technology
Harbin Engineering University
Soochow University

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

25 Scopus citations

Abstract

We investigate upconversion emissions in alkali metal ions (Li⁺, Na⁺, and K⁺) and Er³⁺-codoped Y ₂O₃ nanocrystals. By introducing Li⁺, upconversion intensity is significantly enhanced, while Na⁺ and K⁺ hardly have this influence. FT-IR data give evidence that the main mechanisms of the enhanced upconversion emission cannot be attributed to the decreased surface defects. EXAFS data and variations of enhanced upconversion intensities in different samples indicate that Li⁺ can occupy the interstitial sites in lattice and thus arouse large site asymmetry. In addition, locations in the samples and effects on the upconversion emission of Na ⁺ and K⁺ are discussed.

Original language	English
Pages (from-to)	111-115
Number of pages	5
Journal	Applied Physics B: Lasers and Optics
Volume	110
Issue number	1
DOIs	https://doi.org/10.1007/s00340-012-5257-5
State	Published - Jan 2013

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title = "Effects of alkali metal ions on upconversion photoluminescence intensity of Er3+-doped Y2O3 nanocrystals",

abstract = "We investigate upconversion emissions in alkali metal ions (Li+, Na+, and K+) and Er3+-codoped Y 2O3 nanocrystals. By introducing Li+, upconversion intensity is significantly enhanced, while Na+ and K+ hardly have this influence. FT-IR data give evidence that the main mechanisms of the enhanced upconversion emission cannot be attributed to the decreased surface defects. EXAFS data and variations of enhanced upconversion intensities in different samples indicate that Li+ can occupy the interstitial sites in lattice and thus arouse large site asymmetry. In addition, locations in the samples and effects on the upconversion emission of Na + and K+ are discussed.",

author = "Lu Liu and Yuxiao Wang and Yunfeng Bai and Xueru Zhang and Kun Yang and Yinglin Song",

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T1 - Effects of alkali metal ions on upconversion photoluminescence intensity of Er3+-doped Y2O3 nanocrystals

AU - Liu, Lu

AU - Wang, Yuxiao

AU - Bai, Yunfeng

AU - Zhang, Xueru

AU - Yang, Kun

AU - Song, Yinglin

PY - 2013/1

Y1 - 2013/1

N2 - We investigate upconversion emissions in alkali metal ions (Li+, Na+, and K+) and Er3+-codoped Y 2O3 nanocrystals. By introducing Li+, upconversion intensity is significantly enhanced, while Na+ and K+ hardly have this influence. FT-IR data give evidence that the main mechanisms of the enhanced upconversion emission cannot be attributed to the decreased surface defects. EXAFS data and variations of enhanced upconversion intensities in different samples indicate that Li+ can occupy the interstitial sites in lattice and thus arouse large site asymmetry. In addition, locations in the samples and effects on the upconversion emission of Na + and K+ are discussed.

AB - We investigate upconversion emissions in alkali metal ions (Li+, Na+, and K+) and Er3+-codoped Y 2O3 nanocrystals. By introducing Li+, upconversion intensity is significantly enhanced, while Na+ and K+ hardly have this influence. FT-IR data give evidence that the main mechanisms of the enhanced upconversion emission cannot be attributed to the decreased surface defects. EXAFS data and variations of enhanced upconversion intensities in different samples indicate that Li+ can occupy the interstitial sites in lattice and thus arouse large site asymmetry. In addition, locations in the samples and effects on the upconversion emission of Na + and K+ are discussed.

UR - https://www.scopus.com/pages/publications/84874109479

U2 - 10.1007/s00340-012-5257-5

DO - 10.1007/s00340-012-5257-5

M3 - 文章

AN - SCOPUS:84874109479

SN - 0946-2171

VL - 110

SP - 111

EP - 115

JO - Applied Physics B: Lasers and Optics

JF - Applied Physics B: Lasers and Optics

IS - 1

ER -

Effects of alkali metal ions on upconversion photoluminescence intensity of Er³⁺-doped Y₂O₃ nanocrystals

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