Amphoteric doping of praseodymium Pr<sup>3+</sup> in SrTiO<inf>3</inf> grain boundaries

H. Yang; H. S. Lee; P. G. Kotula; Y. Sato; Y. Ikuhara; N. D. Browning

doi:10.1063/1.4916223

Amphoteric doping of praseodymium Pr<sup>3+</sup> in SrTiO<inf>3</inf> grain boundaries

H. Yang
, H. S. Lee
, P. G. Kotula
, Y. Sato
, Y. Ikuhara
, N. D. Browning

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

Charge compensation in rare-earth Praseodymium (Pr3+) doped SrTiO3 plays an important role in determining the overall photoluminescence properties of the system. Here, the Pr3+ doping behavior in SrTiO3 grain boundaries (GBs) is analyzed using aberration corrected scanning transmission electron microscopy. The presence of Pr3+ induces structural variations and changes the statistical prevalence of the GB structures. In contrast to the assumption that Pr3+ substitutes on the Sr site in the bulk, Pr3+ is found to substitute on both Sr and Ti sites inside the GBs, with the highest concentration at the Ti sites. This amphoteric doping behavior in the boundary plane is further confirmed by first principles theoretical calculations.

Original language	English
Journal	Applied Physics Letters
Volume	106
Issue number	12
DOIs	https://doi.org/10.1063/1.4916223
State	Published - Mar 23 2015
Externally published	Yes

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10.1063/1.4916223

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title = "Amphoteric doping of praseodymium Pr3+ in SrTiO3 grain boundaries",

abstract = "Charge compensation in rare-earth Praseodymium (Pr3+) doped SrTiO3 plays an important role in determining the overall photoluminescence properties of the system. Here, the Pr3+ doping behavior in SrTiO3 grain boundaries (GBs) is analyzed using aberration corrected scanning transmission electron microscopy. The presence of Pr3+ induces structural variations and changes the statistical prevalence of the GB structures. In contrast to the assumption that Pr3+ substitutes on the Sr site in the bulk, Pr3+ is found to substitute on both Sr and Ti sites inside the GBs, with the highest concentration at the Ti sites. This amphoteric doping behavior in the boundary plane is further confirmed by first principles theoretical calculations.",

author = "H. Yang and Lee, \{H. S.\} and Kotula, \{P. G.\} and Y. Sato and Y. Ikuhara and Browning, \{N. D.\}",

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T1 - Amphoteric doping of praseodymium Pr3+ in SrTiO3 grain boundaries

AU - Yang, H.

AU - Lee, H. S.

AU - Kotula, P. G.

AU - Sato, Y.

AU - Ikuhara, Y.

AU - Browning, N. D.

PY - 2015/3/23

Y1 - 2015/3/23

N2 - Charge compensation in rare-earth Praseodymium (Pr3+) doped SrTiO3 plays an important role in determining the overall photoluminescence properties of the system. Here, the Pr3+ doping behavior in SrTiO3 grain boundaries (GBs) is analyzed using aberration corrected scanning transmission electron microscopy. The presence of Pr3+ induces structural variations and changes the statistical prevalence of the GB structures. In contrast to the assumption that Pr3+ substitutes on the Sr site in the bulk, Pr3+ is found to substitute on both Sr and Ti sites inside the GBs, with the highest concentration at the Ti sites. This amphoteric doping behavior in the boundary plane is further confirmed by first principles theoretical calculations.

AB - Charge compensation in rare-earth Praseodymium (Pr3+) doped SrTiO3 plays an important role in determining the overall photoluminescence properties of the system. Here, the Pr3+ doping behavior in SrTiO3 grain boundaries (GBs) is analyzed using aberration corrected scanning transmission electron microscopy. The presence of Pr3+ induces structural variations and changes the statistical prevalence of the GB structures. In contrast to the assumption that Pr3+ substitutes on the Sr site in the bulk, Pr3+ is found to substitute on both Sr and Ti sites inside the GBs, with the highest concentration at the Ti sites. This amphoteric doping behavior in the boundary plane is further confirmed by first principles theoretical calculations.

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DO - 10.1063/1.4916223

M3 - Article

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VL - 106

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 12

ER -

Amphoteric doping of praseodymium Pr<sup>3+</sup> in SrTiO<inf>3</inf> grain boundaries

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