Tip enhancement of upconversion photoluminescence from rare earth ion doped nanocrystals.

ACS Nano
Nina MauserAchim Hartschuh

Abstract

We present tip-enhanced upconversion photoluminescence (PL) images of Er(3+)- and Yb(3+)-doped NaYF4 nanocrystals on glass substrates with subdiffraction spatial resolution. Tip-sample distance dependent measurements clearly demonstrate the near-field origin of the image contrast. Time-resolved PL measurements show that the tip increases the spontaneous emission rate of the two emission channels of Er(3+) in the visible region. Very efficient enhancement of upconversion PL is discussed in the context of the two-photon nature of the excitation process and homoenergy transfer between the ions within the nanocrystals. Comparison between different nanocrystals and tips shows a strong influence of the tip shape on the image contrast that becomes particularly relevant for the larger dimensions of the investigated nanocrystals.

References

Jun 5, 2003·Journal of Structural Biology·Mark S Anderson, Stephen D Gaimari
Jan 15, 2004·Chemical Reviews·François Auzel
Apr 13, 2006·Nano Letters·Neil AndersonLukas Novotny
Jul 23, 2008·Physical Review Letters·Jens Steidtner, Bruno Pettinger
Dec 22, 2009·Nano Letters·Stefan SchietingerOliver Benson
Aug 20, 2010·Optics Express·Miriam BöhmlerAchim Hartschuh
Sep 8, 2010·Nanoscale·John-Christopher Boyer, Frank C J M van Veggel
Oct 1, 2011·ACS Nano·Johannes StadlerRenato Zenobi
Oct 15, 2011·Angewandte Chemie·Miriam BöhmlerAchim Hartschuh
Dec 14, 2011·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Miriam Böhmler, Achim Hartschuh
Dec 12, 2012·Physical Review Letters·Christian BlumWillem L Vos
Jan 3, 2013·Nanoscale Research Letters·Luis Rosales, Jhon W González
Oct 9, 2013·Chemical Society Reviews·Nina Mauser, Achim Hartschuh

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Citations

Sep 22, 2015·Advanced Materials·Si Wu, Hans-Jürgen Butt
Jun 30, 2015·Nanoscale·Jiajia ZhouJianrong Qiu
May 10, 2017·Physical Chemistry Chemical Physics : PCCP·Si Wu, Hans-Jürgen Butt
Nov 5, 2015·Nature Nanotechnology·Bo ZhouXiaogang Liu
Mar 20, 2020·International Journal of Molecular Sciences·Marcin SzalkowskiDawid Piątkowski
Feb 4, 2021·The Journal of Physical Chemistry Letters·Xian QinXiaogang Liu
Nov 17, 2017·ACS Applied Materials & Interfaces·Weina ZhangBaojun Li

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