Effect of annealing atmosphere on microstructural and photoluminescence characteristics of multiferroic BiFeO3 thin films prepared by pulsed laser deposition technique

K. Prashanthi; M. Gupta; Y. Y. Tsui; T. Thundat

doi:10.1007/s00339-012-7194-x

Effect of annealing atmosphere on microstructural and photoluminescence characteristics of multiferroic BiFeO₃ thin films prepared by pulsed laser deposition technique

K. Prashanthi
, M. Gupta
, Y. Y. Tsui
, T. Thundat

Department of Chemical and Biological Engineering

University of Alberta

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

50 Scopus citations

Abstract

The effect of annealing atmosphere on microstructural and photoluminescence characteristics of multiferroic BiFeO₃ (BFO) thin films deposited by pulsed laser deposition (PLD) technique is reported. The films annealed in oxygen environment showed improved microstructure and photoluminescence (PL) characteristics. The PL spectra of oxygen-annealed BFO thin films at room temperature show a strong emission in the blue region. A plot of (αE) ² vs. photon energy (E) (α-absorption coefficient) and the linear extrapolation to (αE)² = 0 indicates a direct gap at 2.69 ± 0.02 eV, which is in agreement with the previous reports. The results obtained in this study are accordingly expected to facilitate the understanding and optimization of BFO thin films for photovoltaic applications.

Original language	English
Pages (from-to)	903-907
Number of pages	5
Journal	Applied Physics A: Materials Science and Processing
Volume	110
Issue number	4
DOIs	https://doi.org/10.1007/s00339-012-7194-x
State	Published - Mar 2013

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@article{22503a6ecbe548a9a53d40352888f8bf,

title = "Effect of annealing atmosphere on microstructural and photoluminescence characteristics of multiferroic BiFeO3 thin films prepared by pulsed laser deposition technique",

abstract = "The effect of annealing atmosphere on microstructural and photoluminescence characteristics of multiferroic BiFeO3 (BFO) thin films deposited by pulsed laser deposition (PLD) technique is reported. The films annealed in oxygen environment showed improved microstructure and photoluminescence (PL) characteristics. The PL spectra of oxygen-annealed BFO thin films at room temperature show a strong emission in the blue region. A plot of (αE) 2 vs. photon energy (E) (α-absorption coefficient) and the linear extrapolation to (αE)2 = 0 indicates a direct gap at 2.69 ± 0.02 eV, which is in agreement with the previous reports. The results obtained in this study are accordingly expected to facilitate the understanding and optimization of BFO thin films for photovoltaic applications.",

author = "K. Prashanthi and M. Gupta and Tsui, \{Y. Y.\} and T. Thundat",

year = "2013",

month = mar,

doi = "10.1007/s00339-012-7194-x",

language = "English",

volume = "110",

pages = "903--907",

journal = "Applied Physics A: Materials Science and Processing",

issn = "0947-8396",

publisher = "Springer Heidelberg",

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Effect of annealing atmosphere on microstructural and photoluminescence characteristics of multiferroic BiFeO₃ thin films prepared by pulsed laser deposition technique. / Prashanthi, K.; Gupta, M.; Tsui, Y. Y. et al.
In: Applied Physics A: Materials Science and Processing, Vol. 110, No. 4, 03.2013, p. 903-907.

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

TY - JOUR

T1 - Effect of annealing atmosphere on microstructural and photoluminescence characteristics of multiferroic BiFeO3 thin films prepared by pulsed laser deposition technique

AU - Prashanthi, K.

AU - Gupta, M.

AU - Tsui, Y. Y.

AU - Thundat, T.

PY - 2013/3

Y1 - 2013/3

N2 - The effect of annealing atmosphere on microstructural and photoluminescence characteristics of multiferroic BiFeO3 (BFO) thin films deposited by pulsed laser deposition (PLD) technique is reported. The films annealed in oxygen environment showed improved microstructure and photoluminescence (PL) characteristics. The PL spectra of oxygen-annealed BFO thin films at room temperature show a strong emission in the blue region. A plot of (αE) 2 vs. photon energy (E) (α-absorption coefficient) and the linear extrapolation to (αE)2 = 0 indicates a direct gap at 2.69 ± 0.02 eV, which is in agreement with the previous reports. The results obtained in this study are accordingly expected to facilitate the understanding and optimization of BFO thin films for photovoltaic applications.

AB - The effect of annealing atmosphere on microstructural and photoluminescence characteristics of multiferroic BiFeO3 (BFO) thin films deposited by pulsed laser deposition (PLD) technique is reported. The films annealed in oxygen environment showed improved microstructure and photoluminescence (PL) characteristics. The PL spectra of oxygen-annealed BFO thin films at room temperature show a strong emission in the blue region. A plot of (αE) 2 vs. photon energy (E) (α-absorption coefficient) and the linear extrapolation to (αE)2 = 0 indicates a direct gap at 2.69 ± 0.02 eV, which is in agreement with the previous reports. The results obtained in this study are accordingly expected to facilitate the understanding and optimization of BFO thin films for photovoltaic applications.

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DO - 10.1007/s00339-012-7194-x

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SN - 0947-8396

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SP - 903

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JO - Applied Physics A: Materials Science and Processing

JF - Applied Physics A: Materials Science and Processing

IS - 4

ER -

Effect of annealing atmosphere on microstructural and photoluminescence characteristics of multiferroic BiFeO₃ thin films prepared by pulsed laser deposition technique

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