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Title: Role of oxygen vacancies on light emission mechanisms in SrTiO3 induced by high-energy particles

Abstract

Light emission under MeV hydrogen and oxygen ions in stoichiometric SrTiO3 are identified at temperatures of 100 K, 170 K and room-temperature. MeV ions predominately deposit their energies to electrons in SrTiO3 with energy densities orders of magnitude higher than from UV or x-ray sources but comparable to femtosecond lasers. The ionoluminescence (IL) spectra can be resolved into three main Gaussian bands at 2.0 eV, 2.5 eV and 2.8 eV, whose relative contributions strongly depend on irradiation temperature, electronic energy loss and irradiation fluence. Two main bands, observed at 2.5 eV and 2.8 eV, are intrinsic and associated with electron–hole recombination in the perfect SrTiO3 lattice. The 2.8 eV band is attributed to recombination of free (conduction) electrons with an in-gap level, possibly related to self-trapped holes. Self-trapped excitons (STEs) are considered suitable candidates for the 2.5 eV emission band, which implies a large energy relaxation in comparison to the intrinsic edge transition. The dynamics of electronic excitation, governs a rapid initial rise of the intensity; whereas, accumulated irradiation damage (competing non-radiative recombination channels) accounts for a subsequent intensity decrease. The previously invoked role of isolated oxygen vacancies for the blue luminescence (2.8 eV) does not appear consistent with themore » data. An increasing well-resolved band at 2.0 eV dominates at 170 K and below. It has been only previously observed in heavily strained and amorphous SrTiO3, and is, here, attributed to transitions from d(t 2g) conduction band levels to d(e g) levels below the gap. In accordance with ab initio theoretical calculations they are associated to trapped electron states in relaxed Ti3+ centers at an oxygen vacancy within distorted TiO6 octahedra. The mechanism of defect evolution monitored during real-time IL experiments is presented. In conclusion, the light emission data confirm that IL is a useful tool to investigate lattice disorder in irradiated SrTiO3.« less

Authors:
 [1];  [2];  [3];  [4];  [4]
+ Show Author Affiliations
  1. Univ. of Tennessee, Knoxville, TN (United States)
  2. Univ. of Tennessee, Knoxville, TN (United States); Missouri Univ. of Science and Technology, Rolla, MO (United States)
  3. Centro de Microanalisis de Materiales, Madrid (Spain)
  4. Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1348342
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Physics. D, Applied Physics
Additional Journal Information:
Journal Volume: 50; Journal Issue: 15; Journal ID: ISSN 0022-3727
Publisher:
IOP Publishing
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; Luminescence; SrTiO3; Ion irradiation; Oxygen vacancies

Citation Formats

Crespillo, M. L., Graham, J. T., Agulló-López, F., Zhang, Y., and Weber, W. J. Role of oxygen vacancies on light emission mechanisms in SrTiO3 induced by high-energy particles. United States: N. p., 2017. Web. doi:10.1088/1361-6463/aa627f.
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Crespillo, M. L., Graham, J. T., Agulló-López, F., Zhang, Y., & Weber, W. J. Role of oxygen vacancies on light emission mechanisms in SrTiO3 induced by high-energy particles. United States. https://doi.org/10.1088/1361-6463/aa627f
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Crespillo, M. L., Graham, J. T., Agulló-López, F., Zhang, Y., and Weber, W. J. Thu . "Role of oxygen vacancies on light emission mechanisms in SrTiO3 induced by high-energy particles". United States. https://doi.org/10.1088/1361-6463/aa627f. https://www.osti.gov/servlets/purl/1348342.
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@article{osti_1348342,
title = {Role of oxygen vacancies on light emission mechanisms in SrTiO3 induced by high-energy particles},
author = {Crespillo, M. L. and Graham, J. T. and Agulló-López, F. and Zhang, Y. and Weber, W. J.},
abstractNote = {Light emission under MeV hydrogen and oxygen ions in stoichiometric SrTiO3 are identified at temperatures of 100 K, 170 K and room-temperature. MeV ions predominately deposit their energies to electrons in SrTiO3 with energy densities orders of magnitude higher than from UV or x-ray sources but comparable to femtosecond lasers. The ionoluminescence (IL) spectra can be resolved into three main Gaussian bands at 2.0 eV, 2.5 eV and 2.8 eV, whose relative contributions strongly depend on irradiation temperature, electronic energy loss and irradiation fluence. Two main bands, observed at 2.5 eV and 2.8 eV, are intrinsic and associated with electron–hole recombination in the perfect SrTiO3 lattice. The 2.8 eV band is attributed to recombination of free (conduction) electrons with an in-gap level, possibly related to self-trapped holes. Self-trapped excitons (STEs) are considered suitable candidates for the 2.5 eV emission band, which implies a large energy relaxation in comparison to the intrinsic edge transition. The dynamics of electronic excitation, governs a rapid initial rise of the intensity; whereas, accumulated irradiation damage (competing non-radiative recombination channels) accounts for a subsequent intensity decrease. The previously invoked role of isolated oxygen vacancies for the blue luminescence (2.8 eV) does not appear consistent with the data. An increasing well-resolved band at 2.0 eV dominates at 170 K and below. It has been only previously observed in heavily strained and amorphous SrTiO3, and is, here, attributed to transitions from d(t 2g) conduction band levels to d(e g) levels below the gap. In accordance with ab initio theoretical calculations they are associated to trapped electron states in relaxed Ti3+ centers at an oxygen vacancy within distorted TiO6 octahedra. The mechanism of defect evolution monitored during real-time IL experiments is presented. In conclusion, the light emission data confirm that IL is a useful tool to investigate lattice disorder in irradiated SrTiO3.},
doi = {10.1088/1361-6463/aa627f},
journal = {Journal of Physics. D, Applied Physics},
number = 15,
volume = 50,
place = {United States},
year = {Thu Feb 23 00:00:00 EST 2017},
month = {Thu Feb 23 00:00:00 EST 2017}
}
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https://doi.org/10.1088/1361-6463/aa627f
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Works referenced in this record:

Low temperature detection of phase transitions and relaxation processes in strontium titanate by means of cathodoluminescence
journal, November 2004

Epitaxial SrTiO3 films with electron mobilities exceeding 30,000 cm2 V-1 s-1
journal, April 2010

  • Son, Junwoo; Moetakef, Pouya; Jalan, Bharat
  • Nature Materials, Vol. 9, Issue 6, p. 482-484
  • DOI: 10.1038/nmat2750

Drift mobility measurements of small-polaron transport in SrTiO 3
journal, February 1984

  • Keroack, D.; Lepine, Y.; Brebner, J. L.
  • Journal of Physics C: Solid State Physics, Vol. 17, Issue 5
  • DOI: 10.1088/0022-3719/17/5/013

Electron Mobility in Semiconducting Strontium Titanate
journal, March 1967

Fabrication of submicron-scale SrTiO3−δ devices by an atomic force microscope
journal, November 2002

  • Pellegrino, L.; Pallecchi, I.; Marré, D.
  • Applied Physics Letters, Vol. 81, Issue 20
  • DOI: 10.1063/1.1521583

Hole localization, migration, and the formation of peroxide anion in perovskite Sr Ti O 3
journal, July 2014

Electron small polarons and bipolarons in LiNbO 3
journal, March 2009

Quantum chemical modelling of electron polarons and  green  luminescence in PbTiO 3 perovskite crystals
journal, September 2002

  • Eglitis, R. I.; Kotomin, E. A.; Trepakov, V. A.
  • Journal of Physics: Condensed Matter, Vol. 14, Issue 39
  • DOI: 10.1088/0953-8984/14/39/102

Ultraviolet photoelectron spectroscopy study of the adsorption of oxygen on reduced SrTiO 3 surfaces
journal, July 1981

  • Ferrer, S.; Somorjai, G. S.
  • Journal of Applied Physics, Vol. 52, Issue 7
  • DOI: 10.1063/1.329319

X‐ray induced processes in SrTiO 3
journal, December 1982

  • Aguilar, M.; Agulló‐López, F.
  • Journal of Applied Physics, Vol. 53, Issue 12
  • DOI: 10.1063/1.330408

Band-edge luminescence from SrTiO3: No polaron effect
journal, March 2012

Room-temperature photoluminescence in amorphous SrTiO 3 - the influence of acceptor-type dopants
journal, November 2002

  • Soledade, L. E. B.; Longo, E.; Leite, E. R.
  • Applied Physics A: Materials Science & Processing, Vol. 75, Issue 5
  • DOI: 10.1007/s003390101140

The role of defect states in the creation of photoluminescence in SrTiO 3
journal, June 2003

  • Pinheiro, C. D.; Longo, E.; Leite, E. R.
  • Applied Physics A: Materials Science & Processing, Vol. 77, Issue 1
  • DOI: 10.1007/s00339-002-1916-4

Combined Experimental and Theoretical Study to Understand the Photoluminescence of Sr 1- x TiO 3- x
journal, July 2004

  • Orhan, Emmanuelle; Pontes, Fenelon M.; Santos, Marcos A.
  • The Journal of Physical Chemistry B, Vol. 108, Issue 26
  • DOI: 10.1021/jp048877y

Defect-induced photoluminescence of strontium titanate and its modulation by electrostatic gating
journal, December 2015

Blue-light emission at room temperature from Ar+-irradiated SrTiO3
journal, October 2005

  • Kan, Daisuke; Terashima, Takahito; Kanda, Ryoko
  • Nature Materials, Vol. 4, Issue 11
  • DOI: 10.1038/nmat1498

Recombination kinetics of a dense electron-hole plasma in strontium titanate
journal, September 2007

Dielectric spectra and electrical conduction in Fe-doped SrTiO 3
journal, February 2000

Blue and infrared cathodoluminescence induced by carbon-irradiation in SrTiO3 single crystal
journal, October 2010

Information obtainable from ion beam luminescence
journal, August 2007

Defect Studies Using Advances with Ion Beam Excited Luminescence
journal, January 2013

An Ideal System for Analysis and Interpretation of Ion Beam Induced Luminescence
journal, January 2015

Exciton mechanisms and modeling of the ionoluminescence in silica
journal, January 2016

  • Bachiller-Perea, D.; Jiménez-Rey, D.; Muñoz-Martín, A.
  • Journal of Physics D: Applied Physics, Vol. 49, Issue 8
  • DOI: 10.1088/0022-3727/49/8/085501

In-situ luminescence monitoring of ion-induced damage evolution in SiO2 and Al2O3
journal, April 2016

Blue luminescence of SrTiO3 under intense optical excitation
journal, November 2009

  • Rubano, A.; Paparo, D.; Granozio, F. Miletto
  • Journal of Applied Physics, Vol. 106, Issue 10
  • DOI: 10.1063/1.3256140

New ion beam materials laboratory for materials modification and irradiation effects research
journal, November 2014

  • Zhang, Y.; Crespillo, M. L.; Xue, H.
  • Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 338
  • DOI: 10.1016/j.nimb.2014.07.028

Temperature measurements during high flux ion beam irradiations
journal, February 2016

  • Crespillo, M. L.; Graham, J. T.; Zhang, Y.
  • Review of Scientific Instruments, Vol. 87, Issue 2
  • DOI: 10.1063/1.4941720

SRIM – The stopping and range of ions in matter (2010)
journal, June 2010

  • Ziegler, James F.; Ziegler, M. D.; Biersack, J. P.
  • Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 268, Issue 11-12
  • DOI: 10.1016/j.nimb.2010.02.091

Blue luminescence from electron-doped SrTiO3
journal, May 2006

  • Kan, D.; Kanda, R.; Kanemitsu, Y.
  • Applied Physics Letters, Vol. 88, Issue 19
  • DOI: 10.1063/1.2202750

Synergy of elastic and inelastic energy loss on ion track formation in SrTiO3
journal, January 2015

  • Weber, William J.; Zarkadoula, Eva; Pakarinen, Olli H.
  • Scientific Reports, Vol. 5, Issue 1
  • DOI: 10.1038/srep07726

Photoluminescence induced by thermal annealing in SrTiO3 thin film
journal, December 2009

  • Rho, JaeHoon; Jang, SeungHun; Ko, Young Dong
  • Applied Physics Letters, Vol. 95, Issue 24
  • DOI: 10.1063/1.3275707

Evidence of the primary-color photoluminescence in ion (H+,H2+,C−) irradiated and thermal annealed SrTiO3
journal, January 2011

Structural and electronic properties of n -doped and p -doped Sr Ti O 3
journal, December 2004

Electronic structure of a neutral oxygen vacancy in SrTiO 3
journal, December 2003

Structural and electronic properties of oxygen vacancies in cubic and antiferrodistortive phases of SrTiO 3
journal, May 2004

Spectra and color centers of strontium titanate crystals
journal, January 2012

Trapping, self-trapping and the polaron family
journal, May 2007

Energy dependence of radioluminescence spectra from strontium titanate
journal, October 2015

Ion-induced damage accumulation and electron-beam-enhanced recrystallization in Sr Ti O 3
journal, September 2005

In-Gap States in Wide-Band-Gap SrTiO3 Analyzed by Cathodoluminescence: In-Gap States in Wide-Band-Gap SrTiO3
journal, March 2011

Time-resolved spectroscopy of the visible emission band in strontium titanate
journal, June 1986

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    Works referencing / citing this record:

    The blue emission at 2.8 eV in strontium titanate: evidence for a radiative transition of self-trapped excitons from unbound states
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    DFT + DMFT study of oxygen vacancies in a Mott insulator
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    Resistance Switching Behavior in Rectangle-Nano-Pattern SrTiO3 Induced by Simple Annealing
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