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Bi2WO6 thin films grown by high-power InfraRed Nd:YAG pulsed laser deposition : a structural and spectroscopic study

Arici, Lorenzo ; Bolanos, Carolina Gutierrez ; Chaluvadi, Sandeep Kumar ; Chalil, Shyni Punathum ; Vobornik, Ivana ; Fujii, Jun ; Mazzola, Federico ; Brollo, Maria Eugenia Fortes ; Ciancio, Regina and Goldoni, Andrea , et al. (2025) In JPhys Materials 8(2).
Abstract

We report on the epitaxial growth of Bi2WO6 thin films by Pulsed Laser Deposition using a high-power infrared Nd:YAG laser source. X-ray diffraction investigation confirms that single (00l)-oriented thin films can be obtained on both LSAT and SrTiO3 substrates by using a LaNiO3 adapting layer. Moreover, reciprocal space maps show that the films coherently grow on such substrates with the in-plane lattice parameters fully matching those of the substrates. In-situ x-ray photoemission spectroscopy experiments show that a UHV annealing process makes the film more conductive even though it also affects the Bi:W chemical ratio by reducing the Bi content. Alternately, the conductivity of the films... (More)

We report on the epitaxial growth of Bi2WO6 thin films by Pulsed Laser Deposition using a high-power infrared Nd:YAG laser source. X-ray diffraction investigation confirms that single (00l)-oriented thin films can be obtained on both LSAT and SrTiO3 substrates by using a LaNiO3 adapting layer. Moreover, reciprocal space maps show that the films coherently grow on such substrates with the in-plane lattice parameters fully matching those of the substrates. In-situ x-ray photoemission spectroscopy experiments show that a UHV annealing process makes the film more conductive even though it also affects the Bi:W chemical ratio by reducing the Bi content. Alternately, the conductivity of the films can be effectively tuned by either growing the film in Ar atmosphere or by depositing potassium on its surface without modifying the Bi:W chemical ratio. Our results provide a viable route to synthesize high-quality Bi2WO6 thin films with tailored electronic properties.

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organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Bismuth tungstate, PLD, thin films
in
JPhys Materials
volume
8
issue
2
article number
025007
publisher
IOP Publishing
external identifiers
  • scopus:85218944043
ISSN
2515-7639
DOI
10.1088/2515-7639/adb51b
language
English
LU publication?
yes
id
4802611f-a7b9-461f-a9f5-ec4fce8d24a2
date added to LUP
2025-06-10 11:33:47
date last changed
2025-06-10 11:34:20
@article{4802611f-a7b9-461f-a9f5-ec4fce8d24a2,
  abstract     = {{<p>We report on the epitaxial growth of Bi<sub>2</sub>WO<sub>6</sub> thin films by Pulsed Laser Deposition using a high-power infrared Nd:YAG laser source. X-ray diffraction investigation confirms that single (00l)-oriented thin films can be obtained on both LSAT and SrTiO<sub>3</sub> substrates by using a LaNiO<sub>3</sub> adapting layer. Moreover, reciprocal space maps show that the films coherently grow on such substrates with the in-plane lattice parameters fully matching those of the substrates. In-situ x-ray photoemission spectroscopy experiments show that a UHV annealing process makes the film more conductive even though it also affects the Bi:W chemical ratio by reducing the Bi content. Alternately, the conductivity of the films can be effectively tuned by either growing the film in Ar atmosphere or by depositing potassium on its surface without modifying the Bi:W chemical ratio. Our results provide a viable route to synthesize high-quality Bi<sub>2</sub>WO<sub>6</sub> thin films with tailored electronic properties.</p>}},
  author       = {{Arici, Lorenzo and Bolanos, Carolina Gutierrez and Chaluvadi, Sandeep Kumar and Chalil, Shyni Punathum and Vobornik, Ivana and Fujii, Jun and Mazzola, Federico and Brollo, Maria Eugenia Fortes and Ciancio, Regina and Goldoni, Andrea and Orgiani, Pasquale and Caputo, Marco}},
  issn         = {{2515-7639}},
  keywords     = {{Bismuth tungstate; PLD; thin films}},
  language     = {{eng}},
  number       = {{2}},
  publisher    = {{IOP Publishing}},
  series       = {{JPhys Materials}},
  title        = {{Bi<sub>2</sub>WO<sub>6</sub> thin films grown by high-power InfraRed Nd:YAG pulsed laser deposition : a structural and spectroscopic study}},
  url          = {{http://dx.doi.org/10.1088/2515-7639/adb51b}},
  doi          = {{10.1088/2515-7639/adb51b}},
  volume       = {{8}},
  year         = {{2025}},
}