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Title: Luminescence characteristics of rare-earth-doped barium hexafluorogermanate BaGeF 6 nanowires: fast subnanosecond decay time and high sensitivity in H 2O 2 detection

Abstract

Fluorides are promising host materials for optical applications. This paper reports the photoluminescent (PL) and cathodoluminescent (CL) characteristics of barium hexafluorogermanate BaGeF 6 nanowires codoped with Ce 3+, Tb 3+ and Sm 3+ rare earth ions, produced by a solvothermal route. The synthesized BaGeF 6 nanowires exhibit uniform morphology and size distribution. X-ray diffraction divulges the one-dimensional growth of crystalline BaGeF 6 structure, with the absence of any impurity phases. Visible luminescence is recorded from the nanowires in green and red regions, when the nanowires are codoped with Ce 3+/Tb 3+, and Ce 3+/Tb 3+/Sm 3+, respectively, under a UV excitation source. The PL emission from the codoped BaGeF 6 nanowires, when excited by a 254 nm source, originates from the efficient energy transfer bridges between Ce 3+, Tb 3+ and Sm 3+ ions. The decay time of the visible luminescent emission from the nanowires is in the order of subnanoseconds, being one of the shortest decay time records from inorganic scintillators. The CL emission from the BaGeF 6 nanowires in the tunable visible range reveals their potential use for the detection of high-energy radiation. The PL emissions are sensitive to H 2O 2 at low concentrations, enabling their high-sensitivitymore » detection of H 2O 2 using BaGeF 6 nanowires. A comparison with BaSiF 6 nanowires is made in terms of decay time and its sensitivity towards H 2O 2.« less

Authors:
 [1];  [1];  [1];  [2];  [3];  [3];  [4];  [1]; ORCiD logo [1]
  1. Fayetteville State Univ., NC (United States)
  2. Kunming Univ. of Science and Technology, Kunming (China)
  3. Argonne National Lab. (ANL), Argonne, IL (United States)
  4. Oak Ridge Associated Univ., Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Scientific User Facilities Division; National Science Foundation (NSF); U.S. Department of Defense (DOD)
OSTI Identifier:
1483339
Alternate Identifier(s):
OSTI ID: 1560050
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Published Article
Journal Name:
RSC Advances
Additional Journal Information:
Journal Volume: 8; Journal Issue: 69; Journal ID: ISSN 2046-2069
Publisher:
Royal Society of Chemistry
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

George, Gibin, Simpson, Machael D., Gautam, Bhoj R., Fang, Dong, Peng, Jinfang, Wen, Jianguo, Davis, Jason E., Ila, Daryush, and Luo, Zhiping. Luminescence characteristics of rare-earth-doped barium hexafluorogermanate BaGeF6 nanowires: fast subnanosecond decay time and high sensitivity in H2O2 detection. United States: N. p., 2018. Web. doi:10.1039/C8RA07806H.
George, Gibin, Simpson, Machael D., Gautam, Bhoj R., Fang, Dong, Peng, Jinfang, Wen, Jianguo, Davis, Jason E., Ila, Daryush, & Luo, Zhiping. Luminescence characteristics of rare-earth-doped barium hexafluorogermanate BaGeF6 nanowires: fast subnanosecond decay time and high sensitivity in H2O2 detection. United States. doi:10.1039/C8RA07806H.
George, Gibin, Simpson, Machael D., Gautam, Bhoj R., Fang, Dong, Peng, Jinfang, Wen, Jianguo, Davis, Jason E., Ila, Daryush, and Luo, Zhiping. Mon . "Luminescence characteristics of rare-earth-doped barium hexafluorogermanate BaGeF6 nanowires: fast subnanosecond decay time and high sensitivity in H2O2 detection". United States. doi:10.1039/C8RA07806H.
@article{osti_1483339,
title = {Luminescence characteristics of rare-earth-doped barium hexafluorogermanate BaGeF6 nanowires: fast subnanosecond decay time and high sensitivity in H2O2 detection},
author = {George, Gibin and Simpson, Machael D. and Gautam, Bhoj R. and Fang, Dong and Peng, Jinfang and Wen, Jianguo and Davis, Jason E. and Ila, Daryush and Luo, Zhiping},
abstractNote = {Fluorides are promising host materials for optical applications. This paper reports the photoluminescent (PL) and cathodoluminescent (CL) characteristics of barium hexafluorogermanate BaGeF6 nanowires codoped with Ce3+, Tb3+ and Sm3+ rare earth ions, produced by a solvothermal route. The synthesized BaGeF6 nanowires exhibit uniform morphology and size distribution. X-ray diffraction divulges the one-dimensional growth of crystalline BaGeF6 structure, with the absence of any impurity phases. Visible luminescence is recorded from the nanowires in green and red regions, when the nanowires are codoped with Ce3+/Tb3+, and Ce3+/Tb3+/Sm3+, respectively, under a UV excitation source. The PL emission from the codoped BaGeF6 nanowires, when excited by a 254 nm source, originates from the efficient energy transfer bridges between Ce3+, Tb3+ and Sm3+ ions. The decay time of the visible luminescent emission from the nanowires is in the order of subnanoseconds, being one of the shortest decay time records from inorganic scintillators. The CL emission from the BaGeF6 nanowires in the tunable visible range reveals their potential use for the detection of high-energy radiation. The PL emissions are sensitive to H2O2 at low concentrations, enabling their high-sensitivity detection of H2O2 using BaGeF6 nanowires. A comparison with BaSiF6 nanowires is made in terms of decay time and its sensitivity towards H2O2.},
doi = {10.1039/C8RA07806H},
journal = {RSC Advances},
number = 69,
volume = 8,
place = {United States},
year = {2018},
month = {11}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1039/C8RA07806H

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