Abstract
Hybrid nanostructures composed of rare earth ion-doped lanthanum trifluoride nanocrystals deposited on silica nanospheres (LaF3:Yb3+, Er3+@SiO2) and decorated with varying quantities of silver nanoparticles (Ag NPs) were synthesized using a simple strategy. Down and upconversion luminescence spectra were recorded. The luminescence dynamics were also recorded following excitation with a 532-nm pulse. Silver loading was found to have a significant effect both on the luminescence intensity and the luminescence decay rate, with the samples with the lowest silver content showing reduced luminescence intensity over silver-free samples, while the samples with large levels of silver loading showed significant luminescence enhancement. The results were successfully (and quantitatively) interpreted in terms of the competition between surface plasmon-induced field enhancement mediated by the Ag nanoparticles and nonradiative energy transfer from the luminescent ions to Ag nanoparticles. By combining the measured luminescence intensity with the luminescence decay rate determined from the dynamics measurements, and with the measured surface plasmon absorption spectra, one could obtain a quantitative and self-consistent understanding of the observed dependence of the green 4S3/2→4I15/2 (~540 nm) and red 4F9/2→4I15/2 (~650) emission bands on the Ag NP metal loading.
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References
Marques-Hueso J, Chen DQ, MacDougall SKW, Wang YS, Richards BS (2011) Advances in spectral conversion for photovoltaics: up-converting Er3+ doped YF3 nanocrystals in transparent glass ceramic. Proc SPIE 8111:811102–881111
Zheng T, Sun LD, Zhou JC, Feng W, Zhang C, Yan CH (2013) Construction of NaREF4 based binary and bilayer nanocrystal assemblies. Chem Commun 49:5799–5801
Matsuura D (2002) Red, green, and blue upconversion luminescence of trivalent-rare-earth ion-doped Y2O3 nanocrystals. Appl Phys Lett 81:4526–4528
Li XJ, Hou ZY, Ma PA, Zhang X, Li CX, Cheng ZY, Dai YL, Lian JS, Lin J (2013) Multifunctional NaYF4:Yb/Er/Gd nanocrystal decorated SiO2 nanotubes for anti-cancer drug delivery and dual modal imaging. RSC Adv 3:8517–8626
Wang Y, Ji L, Zhang BB, Yin PH, Qiu YY, Song DQ, Zhou JY, Li Q (2013) Upconverting rare-earth nanoparticles with a paramagnetic lanthanide complex shell for upconversion fluorescent and magnetic resonance dual-modality imaging. Nanotechnology 24:175101
Mertens H, Polman A (2006) Plasmon-enhanced erbium luminescence. Appl Phys Lett 89:211107
Li P, Peng Q, Li YD (2009) Dual-mode luminescent colloidal spheres from monodisperse rare-earth fluoride nanocrystals. Adv Mater 21:1945–1948
Meijer JM, Aarts L, van der Ende BM, Vlugt TJH, Meijerink A (2007) Downconversion for solar cells in YF3:Nd3+, Yb3+. Phys Rev B 81:035107
Chen GY, Somesfalean G, Liu Y, Zhang ZG, Sun Q, Wang FP (2007) Upconversion mechanism for two-color emission in rare-earth-ion-doped ZrO2 nanocrystals. Phys Rev B 75:195204
Liu CH, Wang H, Li X, Chen DP (2009) Monodisperse, size-tunable and highly efficient β-NaYF4:Yb, Er(Tm) up-conversion luminescent nanospheres: controllable synthesis and their surface modifications. J Mater Chem 19:3546–3553
He EJ, Zheng HR, Zhang ZL, Zhang XS, Xu LM, Fu ZX, Lei Y (2010) Influence of crystal structure on the fluorescence emission of Eu3+:LaOF nanocrystals. J Nanosci Nanotechno 10:1908–1912
Li DY, Wang YX, Zhang XR, Dong HX, Liu L, Shi G, Song YL (2012) Effect of Li+ ions on enhancement of near-infrared upconversion emission in Y2O3:Tm3+/Yb3+ nanocrystals. J Appl Phys 112:094701
Fujii M, Nakano T, Imakita K, Hayashi S (2013) Upconversion luminescence of Er and Yb codoped NaYF4 nanoparticles with metal shells. J Phys Chem C 117:1113–1120
Zhao P, Zhu YH, Yang XL, Fan KC, Shen JH, Li CZ (2012) Facile synthesis of upconversion luminescent mesoporous Y2O3:Er microspheres and metal enhancement using gold nanoparticles. RSC Adv 2:10592–10597
Zhang H, Li YJ, Ivanov IA, Qu YQ, Huang Y, Duan XF (2010) Plasmonic modulation of the upconversion fluorescence in NaYF4:Yb/Tm hexaplate nanocrystals using gold nanoparticles or nanoshells. Angew Chem Int Ed 49:2865–2868
Priyam A, Idris NM, Zhang Y (2012) Gold nanoshell coated NaYF4 nanoparticles for simultaneously enhanced upconversion fluorescence and dark field imaging. J Mater Chem 22:960–965
Saboktakin M, Ye XC, Ju Oh S, Hong SH, Fafarman AT, Chettiar UK, Engheta N, Murray CB, Kagan CR (2012) Metal-enhanced upconversion luminescence tunable through metal nanoparticle nanophosphor separation. ACS Nano 6:8758–8766
Feng W, Sun LD, Yan CH (2009) Ag nanowires enhanced upconversion emission of NaYF4:Yb, Er nanocrystals via a direct assembly method. Chem Commun 29:4393–4395
Sudheendra L, Ortalan V, Dey S, Browning ND, Kennedy IM (2011) Plasmonic enhanced emissions from cubic NaYF4:Yb:Er/Tm nanophosphors. Chem Mater 23:2987–2993
Li ZQ, Chen S, Li JJ, Liu QQ, Sun Z, Wang ZB, Huang SM (2012) Plasmon-enhanced upconversion fluorescence in NaYF4:Yb/Er/Gd nanorods coated with Au nanoparticles or nanoshells. J Appl Phys 111:014310
Liu N, Qin WP, Qin GS, Jiang T, Zhao D (2011) Highly plasmon-enhanced upconversion emissions from Au@β-NaYF4:Yb, Tm hybrid nanostructures. Chem Commun 47:7671–7673
Chance RR, Prock A, Silbey R (1978) Molecular fluorescence and energy transfer near interfaces. Adv Chem Phys 7:1–65
Pustovit VN, Shahbazyan TV (2012) Fluorescence quenching near small metal nanoparticles. J Chem Phys 136:204701
Geddes CD, Lakowicz JR (2002) Metal-enhanced fluorescence. J Fluoresc 12:121–129
Weitz DA, Garoff S, Gersten JI, Nitzan A (1983) The enhancement of Raman scattering, resonance Raman scattering, and fluorescence from molecules adsorbed on a rough silver surface. J Chem Phys 78:5324–5338
Fischer S, Hallermann F, Eichelkraut T, von Plessen G, Krämer KW, Biner D, Steinkemper H, Hermle M, Goldschmid JC (2012) Plasmon enhanced upconversion luminescence near gold nanoparticles—simulation and analysis of the interactions. Opt Express 20:271–282
Rivera VAG, Osorio SPA, Ledemi Y, Manzani D, Messaddeq Y, Nunes LAO, Marega JE (2010) Localized surface plasmon resonance interaction with Er3+-doped tellurite glass. Opt Express 18:25321–25328
Stöber W, Fink A, Bohn EJ (1968) Controlled growth of monodisperse silica spheres in micron size range. J Colloid Interface Sci 26:62–69
Zheng WZ, Pan HC, Chi ZY, Chen HJ (2012) The ultrasonic wave-assisted preparation and modification by KH-550 of SiO2 aerogels. Adv Mater Res 554–556:580–583
Chen R, Nuhfer NT, Moussa L, Morris HR, Whitmore PM (2008) Silver sulfide nanoparticle assembly obtained by reacting an assembled silver nanoparticle template with hydrogen sulfide gas. Nanotechnology 19:455604–455611
Pelton M, Aizpurua J, Bryant G (2008) Metal-nanoparticle plasmonics. Laser Photon Rev 2:136–159
Coronado EA, Encina ER, Stefani FD (2011) Optical properties of metallic nanoparticles: manipulating light, heat and forces at the nanoscale. Nanoscale 3:4042–4059
Musić S, Filipović-Vinceković N, Sekovanić L (2011) Precipitation of amorphous SiO2 particles and their properties. Braz J Chem Eng 28:89–94
Bruneau AB, Fisson S, Vuye G, Rivory J (2000) Change of TO and LO mode frequency of evaporated SiO2 films during aging in air. J Appl Phys 87:7303–7309
Pruthtikul R, Liewchirakorn P (2008) Correlation between siloxane bond formation and oxygen transmission rate in TEOS xerogel. J Metals Mater Mine 18:63–66
Pawlak DA, Ito M, Oku M, Shimamura K, Fukuda T (2002) Interpretation of XPS O (1s) in mixed oxides proved on mixed perovskite crystals. J Phys Chem B 106:504–507
Prodan E, Radloff C, Halas NJ, Nordlander P (2003) A hybridization model for the plasmon response of complex nanostructures. Science 302:419–422
Rechberger W, Hohenau A, Leitner A, Krenn JR, Lamprecht B, Aussenegg FR (2003) Optical properties of two interacting gold nanoparticles. Opt Commun 220:137–141
Schmeits M, Dambly L (1991) Fast-electron scattering by bispherical surface-plasmon modes. Phys Rev B 44:12706–12712
Weber MJ (1967) Probabilities for radiative and nonradiative decay of Er3+ in LaF3. Phys Rev 157:262–272
Derom S, Berthelot A, Pillonner A, Benamara O, Jurdyc AM, Girard C, des Colas FG (2013) Metal enhanced fluorescence in rare earth doped plasmonic core–shell nanoparticles. Nanotechnology 24:495704
Greeneltch NG, Blaber MG, Schatz GC, Van Duyne RP (2013) Plasmon-sampled surface-enhanced Raman excitation spectroscopy on silver immobilized nanorod assemblies and optimization for near infrared (λex = 1064 nm) studies. J Phys Chem C 117:2554–2558
Moskovits M (2013) Persistent misconceptions regarding SERS. Phys Chem Chem Phys 15:5301–5311
Kümmerlen J, Leitner A, Brunner H, Aussenegg FR, Wokaun A (1993) Enhanced dye fluorescence over silver island films: analysis of the distance dependence. Mol Phys 80:1031–1046
Sokolov K, Chumanov G, Cotton TM (1998) Enhancement of molecular fluorescence near the surface of colloidal metal films. Anal Chem 70:3898–3905
Acknowledgments
This work was financially supported by the National Science Foundation of China (11174190), the Natural Science Basus Research Plan in Shaanxi Province of China (2013JM1008), the Natural Science Foundation of Anhui Province (1308085MA11), and the Foundation from the Excellent Youth Talents Support Plan in Universities of Anhui Province (2014).
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He, E.J., Moskovits, M., Dong, J. et al. Luminescence Enhancement Mechanism of Lanthanide-Doped Hybrid Nanostructures Decorated by Silver Nanocrystals. Plasmonics 10, 357–368 (2015). https://doi.org/10.1007/s11468-014-9817-x
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DOI: https://doi.org/10.1007/s11468-014-9817-x