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Title: Interface-Dependent Radiative Lifetimes of Yb3+, Er3+ Co-doped Single NaYF4 Upconversion Nanowires

Abstract

The development of upconversion nanomaterials for many photonic applications requires a detailed understanding of their radiative lifetimes that in turn depend critically on local environmental conditions. In this work, hexagonal (ß-phase) sodium-yttrium-?uoride (NaYF4) nanowires (NWs) were synthesized and substitutionally co-doped with a luminescent solid solution of trivalent erbium and ytterbium ions. A single-beam laser trapping instrument was used in tandem with a piezo-controlled, variable-temperature stage to precisely vary the nanowire’s distance from the substrate. The spontaneous photoluminescence lifetime of the 4S3/2 ? 4I15/2 transition from Er3+ ions was observed to change by >60% depending on the ions’ separation distance from a planar (water/glass) dielectric interface. The 4S3/2 state lifetime is observed to increase by a factor of 1.62 ± 0.01 as the distance from the quartz coverslip increases from ~0 nm to~40 µm. Less signi?cant changes in the luminescence lifetime (=10%) were observed over a temperature range between 25 and 50 °C. The distance dependence of the lifetime is interpreted quantitatively in the context of classical electromagnetic coupling between Er3+ ions within the nanowire and the adjacent dielectric interface. We also demonstrate potential applications of the NaYF4 NWs for both controlling and probing temperatures at nanometer scales by integrating themmore » within a poly(dimethylsiloxane) composite matrix.« less

Authors:
 [1];  [1];  [1];  [1];  [2];  [1];  [2]
  1. University of Washington
  2. UNIVERSITY OF WASHINGTON (MAIN CAMPUS)
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1572503
Report Number(s):
PNNL-SA-147555
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Journal Name:
ACS Applied Materials & Interfaces
Additional Journal Information:
Journal Volume: 11; Journal Issue: 25
Country of Publication:
United States
Language:
English
Subject:
upconversion, nanowires, radiative lifetime, optical density of states, laser tweezers, noncontact thermometry

Citation Formats

Zhou, Xuezhe, Xia, Xiaojing, Smith, Bennett E., Lim, Matthew B., Bard, Alexander B., Pant, Anupum, and Pauzauskie, Peter. Interface-Dependent Radiative Lifetimes of Yb3+, Er3+ Co-doped Single NaYF4 Upconversion Nanowires. United States: N. p., 2019. Web. doi:10.1021/acsami.8b17271.
Zhou, Xuezhe, Xia, Xiaojing, Smith, Bennett E., Lim, Matthew B., Bard, Alexander B., Pant, Anupum, & Pauzauskie, Peter. Interface-Dependent Radiative Lifetimes of Yb3+, Er3+ Co-doped Single NaYF4 Upconversion Nanowires. United States. doi:10.1021/acsami.8b17271.
Zhou, Xuezhe, Xia, Xiaojing, Smith, Bennett E., Lim, Matthew B., Bard, Alexander B., Pant, Anupum, and Pauzauskie, Peter. Wed . "Interface-Dependent Radiative Lifetimes of Yb3+, Er3+ Co-doped Single NaYF4 Upconversion Nanowires". United States. doi:10.1021/acsami.8b17271.
@article{osti_1572503,
title = {Interface-Dependent Radiative Lifetimes of Yb3+, Er3+ Co-doped Single NaYF4 Upconversion Nanowires},
author = {Zhou, Xuezhe and Xia, Xiaojing and Smith, Bennett E. and Lim, Matthew B. and Bard, Alexander B. and Pant, Anupum and Pauzauskie, Peter},
abstractNote = {The development of upconversion nanomaterials for many photonic applications requires a detailed understanding of their radiative lifetimes that in turn depend critically on local environmental conditions. In this work, hexagonal (ß-phase) sodium-yttrium-?uoride (NaYF4) nanowires (NWs) were synthesized and substitutionally co-doped with a luminescent solid solution of trivalent erbium and ytterbium ions. A single-beam laser trapping instrument was used in tandem with a piezo-controlled, variable-temperature stage to precisely vary the nanowire’s distance from the substrate. The spontaneous photoluminescence lifetime of the 4S3/2 ? 4I15/2 transition from Er3+ ions was observed to change by >60% depending on the ions’ separation distance from a planar (water/glass) dielectric interface. The 4S3/2 state lifetime is observed to increase by a factor of 1.62 ± 0.01 as the distance from the quartz coverslip increases from ~0 nm to~40 µm. Less signi?cant changes in the luminescence lifetime (=10%) were observed over a temperature range between 25 and 50 °C. The distance dependence of the lifetime is interpreted quantitatively in the context of classical electromagnetic coupling between Er3+ ions within the nanowire and the adjacent dielectric interface. We also demonstrate potential applications of the NaYF4 NWs for both controlling and probing temperatures at nanometer scales by integrating them within a poly(dimethylsiloxane) composite matrix.},
doi = {10.1021/acsami.8b17271},
journal = {ACS Applied Materials & Interfaces},
number = 25,
volume = 11,
place = {United States},
year = {2019},
month = {6}
}