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Enhanced photoluminescence of LEuH nanosheets: 2D photonic crystals self-assembled by core–shell SiO(2)@LEuH spheres

The enhancement in photoluminescence (PL) is a challenge for layered rare-earth hydroxides, which usually have weak PL due to the quenching effect of hydroxyls. In this work, we provide a strategy to enhance the PL behavior by constructing two-dimensional (2D) photonic crystals. The core–shell struc...

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Autores principales: Wang, Xinying, Feng, Pingping, Shao, Baiyi, Cui, Fangming, Yang, Xiaojing
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9061281/
https://www.ncbi.nlm.nih.gov/pubmed/35521198
http://dx.doi.org/10.1039/c9ra00543a
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author Wang, Xinying
Feng, Pingping
Shao, Baiyi
Cui, Fangming
Yang, Xiaojing
author_facet Wang, Xinying
Feng, Pingping
Shao, Baiyi
Cui, Fangming
Yang, Xiaojing
author_sort Wang, Xinying
collection PubMed
description The enhancement in photoluminescence (PL) is a challenge for layered rare-earth hydroxides, which usually have weak PL due to the quenching effect of hydroxyls. In this work, we provide a strategy to enhance the PL behavior by constructing two-dimensional (2D) photonic crystals. The core–shell structured SiO(2)@LEuH spheres were prepared by attaching the positively charged layered europium hydroxide (LEuH) nanosheets onto the negatively charged surfaces of the SiO(2) spheres; the core–shell spheres further formed a monolayered 2D colloidal crystal with the hexagonal lattice on a quartz substrate through an evaporation-induced assembly process. The 2D colloidal crystals exhibited a significantly enhanced photoluminescence at 611 nm related to the (5)D(0) → (7)F(2) transition of Eu(3+) compared with the SiO(2)@LEuH spheres and the LEuH nanosheets dispersed in deionized water. The emission band of Eu(3+) hardly changed in the three samples; therefore, the PL enhancement can be attributed to the emission band located at the short edge of the photonic band-gap of the 2D crystals.
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spelling pubmed-90612812022-05-04 Enhanced photoluminescence of LEuH nanosheets: 2D photonic crystals self-assembled by core–shell SiO(2)@LEuH spheres Wang, Xinying Feng, Pingping Shao, Baiyi Cui, Fangming Yang, Xiaojing RSC Adv Chemistry The enhancement in photoluminescence (PL) is a challenge for layered rare-earth hydroxides, which usually have weak PL due to the quenching effect of hydroxyls. In this work, we provide a strategy to enhance the PL behavior by constructing two-dimensional (2D) photonic crystals. The core–shell structured SiO(2)@LEuH spheres were prepared by attaching the positively charged layered europium hydroxide (LEuH) nanosheets onto the negatively charged surfaces of the SiO(2) spheres; the core–shell spheres further formed a monolayered 2D colloidal crystal with the hexagonal lattice on a quartz substrate through an evaporation-induced assembly process. The 2D colloidal crystals exhibited a significantly enhanced photoluminescence at 611 nm related to the (5)D(0) → (7)F(2) transition of Eu(3+) compared with the SiO(2)@LEuH spheres and the LEuH nanosheets dispersed in deionized water. The emission band of Eu(3+) hardly changed in the three samples; therefore, the PL enhancement can be attributed to the emission band located at the short edge of the photonic band-gap of the 2D crystals. The Royal Society of Chemistry 2019-03-12 /pmc/articles/PMC9061281/ /pubmed/35521198 http://dx.doi.org/10.1039/c9ra00543a Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Wang, Xinying
Feng, Pingping
Shao, Baiyi
Cui, Fangming
Yang, Xiaojing
Enhanced photoluminescence of LEuH nanosheets: 2D photonic crystals self-assembled by core–shell SiO(2)@LEuH spheres
title Enhanced photoluminescence of LEuH nanosheets: 2D photonic crystals self-assembled by core–shell SiO(2)@LEuH spheres
title_full Enhanced photoluminescence of LEuH nanosheets: 2D photonic crystals self-assembled by core–shell SiO(2)@LEuH spheres
title_fullStr Enhanced photoluminescence of LEuH nanosheets: 2D photonic crystals self-assembled by core–shell SiO(2)@LEuH spheres
title_full_unstemmed Enhanced photoluminescence of LEuH nanosheets: 2D photonic crystals self-assembled by core–shell SiO(2)@LEuH spheres
title_short Enhanced photoluminescence of LEuH nanosheets: 2D photonic crystals self-assembled by core–shell SiO(2)@LEuH spheres
title_sort enhanced photoluminescence of leuh nanosheets: 2d photonic crystals self-assembled by core–shell sio(2)@leuh spheres
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9061281/
https://www.ncbi.nlm.nih.gov/pubmed/35521198
http://dx.doi.org/10.1039/c9ra00543a
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