Relation between shell thickness and near infrared photoluminescence of LaPO4:Yb3+/GdPO4 core/shell nanoparticles

Tomoya Shimizu; Tetsuhiko Isobe

doi:10.1016/j.matlet.2013.08.017

Relation between shell thickness and near infrared photoluminescence of LaPO₄:Yb³⁺/GdPO₄ core/shell nanoparticles

Tomoya Shimizu, Tetsuhiko Isobe

Department of Applied Chemistry

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

13 Citations (Scopus)

Abstract

LaPO₄:Yb³⁺ core and LaPO₄:Yb ³⁺/GdPO₄ core/shell nanoparticles (NPs) are prepared from lanthanide chlorides and orthophosphoric acid at 200 C using diphenyl ether as a solvent with tributyl phosphate and trihexyl amine as coordinating molecules. Near infrared (NIR) emission is observed at 976 nm under 940 nm NIR excitation for both NPs, where these excitation and emission occur through transitions between Stark splitting levels of ²F_7/2 and ²F_5/2 of Yb³⁺. High resolution TEM observation reveals that LaPO₄:Yb³⁺/GdPO₄ core/shell consists of a single crystalline domain and hence the GdPO₄ shell epitaxially grows on LaPO₄:Yb³⁺ core. We investigate the change in NIR emission intensity and shell thickness with reaction time at 200 C.

Original language	English
Pages (from-to)	180-183
Number of pages	4
Journal	Materials Letters
Volume	110
DOIs	https://doi.org/10.1016/j.matlet.2013.08.017
Publication status	Published - 2013

Keywords

LaPO:Yb
Nanoparticles
Near infrared emission

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Access to Document

10.1016/j.matlet.2013.08.017

Cite this

@article{2ed33c48759e41c181e4d63c35adc8e8,

title = "Relation between shell thickness and near infrared photoluminescence of LaPO4:Yb3+/GdPO4 core/shell nanoparticles",

abstract = "LaPO4:Yb3+ core and LaPO4:Yb 3+/GdPO4 core/shell nanoparticles (NPs) are prepared from lanthanide chlorides and orthophosphoric acid at 200 C using diphenyl ether as a solvent with tributyl phosphate and trihexyl amine as coordinating molecules. Near infrared (NIR) emission is observed at 976 nm under 940 nm NIR excitation for both NPs, where these excitation and emission occur through transitions between Stark splitting levels of 2F7/2 and 2F5/2 of Yb3+. High resolution TEM observation reveals that LaPO4:Yb3+/GdPO4 core/shell consists of a single crystalline domain and hence the GdPO4 shell epitaxially grows on LaPO4:Yb3+ core. We investigate the change in NIR emission intensity and shell thickness with reaction time at 200 C.",

keywords = "LaPO:Yb, Nanoparticles, Near infrared emission",

author = "Tomoya Shimizu and Tetsuhiko Isobe",

year = "2013",

doi = "10.1016/j.matlet.2013.08.017",

language = "English",

volume = "110",

pages = "180--183",

journal = "Materials Letters",

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TY - JOUR

T1 - Relation between shell thickness and near infrared photoluminescence of LaPO4:Yb3+/GdPO4 core/shell nanoparticles

AU - Shimizu, Tomoya

AU - Isobe, Tetsuhiko

PY - 2013

Y1 - 2013

N2 - LaPO4:Yb3+ core and LaPO4:Yb 3+/GdPO4 core/shell nanoparticles (NPs) are prepared from lanthanide chlorides and orthophosphoric acid at 200 C using diphenyl ether as a solvent with tributyl phosphate and trihexyl amine as coordinating molecules. Near infrared (NIR) emission is observed at 976 nm under 940 nm NIR excitation for both NPs, where these excitation and emission occur through transitions between Stark splitting levels of 2F7/2 and 2F5/2 of Yb3+. High resolution TEM observation reveals that LaPO4:Yb3+/GdPO4 core/shell consists of a single crystalline domain and hence the GdPO4 shell epitaxially grows on LaPO4:Yb3+ core. We investigate the change in NIR emission intensity and shell thickness with reaction time at 200 C.

AB - LaPO4:Yb3+ core and LaPO4:Yb 3+/GdPO4 core/shell nanoparticles (NPs) are prepared from lanthanide chlorides and orthophosphoric acid at 200 C using diphenyl ether as a solvent with tributyl phosphate and trihexyl amine as coordinating molecules. Near infrared (NIR) emission is observed at 976 nm under 940 nm NIR excitation for both NPs, where these excitation and emission occur through transitions between Stark splitting levels of 2F7/2 and 2F5/2 of Yb3+. High resolution TEM observation reveals that LaPO4:Yb3+/GdPO4 core/shell consists of a single crystalline domain and hence the GdPO4 shell epitaxially grows on LaPO4:Yb3+ core. We investigate the change in NIR emission intensity and shell thickness with reaction time at 200 C.

KW - LaPO:Yb

KW - Nanoparticles

KW - Near infrared emission

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