Imperial College London

ProfessorMaryRyan

Faculty of EngineeringDepartment of Materials

Vice-Dean (Research), Faculty of Engineering
 
 
 
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Contact

 

+44 (0)20 7594 6755m.p.ryan

 
 
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Location

 

B338Royal School of MinesSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Qin:2017:10.1039/C7CP01959A,
author = {Qin, H and Shamso, A and Centeno, A and Theodorou, I and Mihai, A and Ryan, M and Xie, F},
doi = {10.1039/C7CP01959A},
journal = {Physical Chemistry Chemical Physics},
pages = {19159--19167},
title = {Enhancing the upconversion photoluminescence of hexagonal phase NaYF4:Yb3+, Er3+ nanoparticles by mesoporous gold films},
url = {http://dx.doi.org/10.1039/C7CP01959A},
volume = {19},
year = {2017}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - Efficient enhancement of photoluminescence in rare-earth activated upconversion materials is of great significance for their practical applications in various fields. In this work{,} three-dimensional mesoporous gold films were fabricated by a low-cost and facile dealloying approach to improve the upconversion photoluminescence efficiency. The mesoporous Au films exhibit good chemical stability{,} large-area uniformity and abundant distribution of porous nanospaces. Varying the time of the dealloying process leads to modification of pore size distribution{,} surface roughness and residual Ag content{,} resulting in effective tuning the wavelength of the broadband localized surface plasmon resonance (LSPR). Enhancement factors were identified to be a function of the dealloying time. With the optimized upconversion photoluminescence enhancement a 41-fold increase was achieved with the mesoporous gold substrate which had been dealloyed for 8 days. These results pave the way to overcome the limitation of poor upconversion efficiency for widespread practical applications in life sciences and energy applications.
AU - Qin,H
AU - Shamso,A
AU - Centeno,A
AU - Theodorou,I
AU - Mihai,A
AU - Ryan,M
AU - Xie,F
DO - 10.1039/C7CP01959A
EP - 19167
PY - 2017///
SN - 1463-9076
SP - 19159
TI - Enhancing the upconversion photoluminescence of hexagonal phase NaYF4:Yb3+, Er3+ nanoparticles by mesoporous gold films
T2 - Physical Chemistry Chemical Physics
UR - http://dx.doi.org/10.1039/C7CP01959A
UR - http://hdl.handle.net/10044/1/49443
VL - 19
ER -