Mild preparation and high fluorescence emission efficiency of europium-doped gallium nitride nanocrystals and first-principles density functional theoretical analysis of optical properties - Details

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Abstract：

Europium-doped　gallium　nitride　(Eu:GaN)　nanocrystals　with　hexagonal　wurtzite　structures　were　prepared　from　the　decomposition　of　the　EuxGa1-x(H2NCONH2)6Cl3　precursor　at　a　mild　temperature　of　350　°C.　The　absorption　spectrum,　the　excitation　spectra　and　the　fluorescence　emission　spectra　of　Eu:GaN　nanocrystals　are　measured　and　discussed.　Eu:GaN　has　a　strong　fluorescence　emission　band　in　the　visible　region.　Furthermore,　the　first-principles　density　functional　theory　has　been　adopted　to　explore　the　fluorescence　mechanism.　The　results　show　that　energy　transfer　should　occur　between　the　GaN　host　and　Eu3+　ions　under　excitation　at　370　nm,　and　thus　the　fluorescence　emission　efficiency　of　the　Eu3+　ions　can　be　improved.　In　order　to　further　reduce　the　loss　of　fluorescence　emission　and　increase　the　fluorescence　quantum　yield,　Eu:GaN　nanocrystals　coated　by　biocompatible　silica　and　dispersed　in　ethanol　are　also　discussed.　©　2017　The　Royal　Society　of　Chemistry.

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[ 1 ] [Hu, X.]College of Chemistry, Fuzhou University, Fuzhou, 350116, China
[ 2 ] [Hu, X.]Institute of Optical Crystalline Materials, Fuzhou University, Fuzhou, 350116, China
[ 3 ] [Zhou, N.]College of Chemistry, Fuzhou University, Fuzhou, 350116, China
[ 4 ] [Zhou, N.]Institute of Optical Crystalline Materials, Fuzhou University, Fuzhou, 350116, China
[ 5 ] [Hu, Y.]College of Chemistry, Fuzhou University, Fuzhou, 350116, China
[ 6 ] [Hu, Y.]Institute of Optical Crystalline Materials, Fuzhou University, Fuzhou, 350116, China
[ 7 ] [Li, Y.]College of Chemistry, Fuzhou University, Fuzhou, 350116, China
[ 8 ] [Li, Y.]Institute of Optical Crystalline Materials, Fuzhou University, Fuzhou, 350116, China
[ 9 ] [Chen, N.]College of Chemistry, Fuzhou University, Fuzhou, 350116, China
[ 10 ] [Zhao, B.]College of Chemistry, Fuzhou University, Fuzhou, 350116, China
[ 11 ] [Zhao, B.]Institute of Optical Crystalline Materials, Fuzhou University, Fuzhou, 350116, China
[ 12 ] [Zhang, Y.]College of Chemistry, Fuzhou University, Fuzhou, 350116, China
[ 13 ] [Zhuang, N.]College of Chemistry, Fuzhou University, Fuzhou, 350116, China
[ 14 ] [Zhuang, N.]Institute of Optical Crystalline Materials, Fuzhou University, Fuzhou, 350116, China

Reprint 's Address：

[Zhuang, N.]College of Chemistry, Fuzhou UniversityChina

Email：

nfzhuang@fzu.edu.cn

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Journal of Materials Chemistry C

ISSN： 2050-7534

Year： 2017

Issue： 31

Volume： 5

Page： 7904-7910

5 . 9 7 6

JCR@2017

5 . 7 0 0

JCR@2023

ESI HC Threshold：306

JCR Journal Grade：1

CAS Journal Grade：2

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ESI Highly Cited Papers on the List： 0 Unfold All

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30 Days PV： 0

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