Non-Linear Density Dependent Upconversion Luminescence Enhancement of β-NaYF4: Yb3+: Er3+ Nanoparticles on Random Ag Nanowire Aggregates

MRS Advances ◽  
2016 ◽  
Vol 1 (38) ◽  
pp. 2677-2682
Author(s):  
Amy Hor ◽  
Quoc Anh N. Luu ◽  
P. Stanley May ◽  
Mary Berry ◽  
Steve Smith
Keyword(s):  
Statistical Analysis ◽  
Surface Coverage ◽  
Upconversion Luminescence ◽  
Time Resolved ◽  
Luminescence Enhancement ◽  
Density Dependent ◽  
Nanowire Surface ◽  
Non Linear ◽  
Spectrally Resolved ◽  
Ag Nanowire

ABSTRACTSpectroscopic imaging and statistical analysis of NIR-to-visible upconversion luminescence (UCL) from β-NaYF4:Yb3+:Er3+ upconverting nanoparticles (UCNPs) supported on a series of random Ag nanowire aggregates reveals a density dependent UCL enhancement. Statistical analysis of the spectrally resolved upconversion images shows a non-linear dependence of upconversion luminescence enhancement with Ag nanowire surface coverage. A maximum average enhancement of 5.8× was observed for 58% surface coverage. Based on the empirically determined trend with density, it is estimated that up to 20× upconversion luminescence enhancement can be achieved at 100% surface coverage, even at high excitation intensity. This projection is commensurate with the 20× enhancement ratio observed for select locations within the imaged micro-ensemble. Time-resolved emission of the UC luminescence from UCNPs on the Ag nanowire aggregates confirms the surface plasmon effects on the UCNPs kinetics. Such Ag nanowire aggregates show potential as a scalable and relatively simple metal-enhanced upconversion substrate.

Enhancing static green upconversion luminescence of NaY(MoO4)2: Yb/Er microcrystals via annealing strategy for anti-counterfeiting applications

2021 ◽  
Author(s):  
Xiangyu Zhang ◽  
Jialing Wu ◽  
Peng Wang ◽  
Jie Gao ◽  
Feng Gao ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Thermal Treatment ◽  
Upconversion Luminescence ◽  
Luminescence Enhancement ◽  
Doped Materials

The majority of the fabricated procedures of lanthanide doped materials involve in thermal treatment which often results in crystallite regrowth, stabilizing the specific crystal structure and luminescence enhancement. The efficiency...

Simultaneous size adjustment and upconversion luminescence enhancement of β-NaLuF4:Yb3+/Er3+,Er3+/Tm3+ microcrystals by introducing Ca2+ for temperature sensing

CrystEngComm ◽  
2018 ◽  
Vol 20 (14) ◽  
pp. 2029-2035 ◽  
Author(s):  
Aihua Zhou ◽  
Feng Song ◽  
Yingdong Han ◽  
Feifei Song ◽  
Dandan Ju ◽  
...  
Keyword(s):  
Low Temperature ◽  
Hydrothermal Method ◽  
Upconversion Luminescence ◽  
Temperature Sensing ◽  
Facile Hydrothermal Method ◽  
Luminescence Enhancement ◽  
Size Adjustment

β-NaLuF4:Yb3+/Er3+ microcrystals have been obtained through a facile hydrothermal method at a relatively low temperature (180 °C) within only two hours.

Statistical Time-Resolved Spectroscopic Study on Upconversion Luminescence

2019 ◽  
Vol 124 (4) ◽  
pp. 2680-2688 ◽  
Author(s):  
Youngho Cho ◽  
Soo Yeong Lim ◽  
Song Yeul Lee ◽  
Jae Hun Kim ◽  
Yong Il Park ◽  
...  
Keyword(s):  
Spectroscopic Study ◽  
Upconversion Luminescence ◽  
Time Resolved ◽  
Statistical Time

Upconversion luminescence enhancement and lifetime based thermometry of Na(Gd/Lu)F4 solid solutions

2019 ◽  
Vol 43 (9) ◽  
pp. 3848-3855 ◽  
Author(s):  
Lu Yao ◽  
Yongjin Li ◽  
Dekang Xu ◽  
Hao Lin ◽  
Yan Peng ◽  
...  
Keyword(s):  
Solid Solution ◽  
Solid Solutions ◽  
Upconversion Luminescence ◽  
Solution Strategy ◽  
Luminescence Enhancement ◽  
Thermal Sensing ◽  
Sensing Performance

Upconversion luminescence and lifetime based thermal sensing performance enhancements of NaGdF4 are achieved by a simple solid solution strategy.

scholarly journals Time-resolved non-linear optical response and photo-induced carriers trapping in glassy semiconductors

2020 ◽  
Vol 1461 ◽  
pp. 012139
Author(s):  
E Romanova ◽  
A Afanasiev ◽  
A Velmuzhov ◽  
M Sukhanov ◽  
Yu Kuzyutkina ◽  
...  
Keyword(s):  
Optical Response ◽  
Time Resolved ◽  
Non Linear ◽  
Linear Optical

Luminescence Intermittency and Quantum Efficiency of Individual Porous Si Nanoparticles.

1999 ◽  
Vol 560 ◽  
Author(s):  
Michael D. Mason ◽  
Grace M. Credo ◽  
Paul J. Carson ◽  
Steven K. Buratto
Keyword(s):  
Quantum Efficiency ◽  
Colloidal Suspension ◽  
Porous Si ◽  
Time Resolved ◽  
High Quantum Efficiency ◽  
Si Nanoparticles ◽  
Shear Force Microscopy ◽  
Spectrally Resolved ◽  
Single Particle Spectroscopy ◽  
Microscopy Techniques

ABSTRACTWe have recently observed spectrally resolved vibronic structure and luminescence intermittency from nanometer-size porous silicon nanocrystals. In this study we examine the quantum efficiency of a single nanoparticle and show that emitting nanoparticles do so with near unity quantum efficiency. This result suggests that the emission from porous Si nanoparticles, and thus bulk porous Si, results from a small number of high quantum efficiency emitters. In our previous work we have shown that our nanoparticles contain more than one coupled chromophore. In order to examine these effects more closely we employ several spectroscopy and microscopy techniques including: 1) single-particle spectroscopy, 2) shear-force microscopy, and 3) time-resolved spectroscopy, on a colloidal suspension of size-selected, surface-oxidized nanoparticles. In addition we apply statistical techniques to provide a more complete picture of the coupling between chromophores in a given nanoparticle.

A time-resolved luminescence spectroscopy study of non-linear optical crystals K2Al2B2O7

2012 ◽  
Vol 132 (7) ◽  
pp. 1632-1638 ◽  
Author(s):  
I.N. Ogorodnikov ◽  
V.A. Pustovarov ◽  
S.A. Yakovlev ◽  
L.I. Isaenko ◽  
S.A. Zhurkov
Keyword(s):  
Luminescence Spectroscopy ◽  
Spectroscopy Study ◽  
Time Resolved ◽  
Optical Crystals ◽  
Non Linear ◽  
Linear Optical
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