Micropatterning of BiVO4 Thin Films Using Laser-Induced Crystallization

Konrad Trzciński, Raul D. Rodriguez, Constance Schmidt, Mahfujur Rahaman, Mirosław Sawczak, Anna Lisowska-Oleksiak, Jacek Gasiorowski, Dietrich R.T. Zahn

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Relatively high temperatures even up to 500 C are required to obtain bismuth vanadate (BiVO4) films with the scheelite monoclinic (s-m) structure that shows the highest photocatalytic activity. This requirement limits the possible choice of substrates. Moreover, high quality thin layers of crystalline BiVO4 cannot be prepared with current methods. In this study a light-induced crystallization approach is presented, which is a step toward preparation and patterning of BiVO4 (s-m) films for applications on plastic substrates. Thin films of amorphous BiVO4 are prepared by pulsed laser deposition. The possibility of using green (514.7 nm) laser illumination for crystallization of BiVO4 is investigated. The laser-induced phase transition is tracked using Raman spectroscopy. The results are compared with those obtained from thermally annealed samples, crystalline structure of which is confirmed by measuring X-ray diffraction. The homogeneity and quality of crystallization are verified using micro-Raman spectroscopy imaging, while time-dependent experiments reveal the crystallization rate. The conductivity of the crystallized region is investigated using conductive atomic force microscopy. A strong increase in the conductivity is found in the patterned regions. Experimental results demonstrate the possibility of using the laser-induced crystallization of BiVO4 to prepare patterns of improved conductivity and semiconducting properties in comparison to amorphous surroundings. The possibility of light-induced crystallization and micropatterning of amorphous bismuth vanadate (BiVO4) is presented. The photocrystallization process is tracked in situ using Raman spectroscopy. The conducting properties of amorphous and crystalline BiVO4 are determined using conducting atomic force microscopy. The micropatterned regions exhibit higher conductivity. The photocrystallization process leads to crystallites with scheelite monoclinic structure, which can be applied in photocatalysis.

Original languageEnglish
Article number1500509
JournalAdvanced Materials Interfaces
Volume3
Issue number4
DOIs
Publication statusPublished - 23 Feb 2016
Externally publishedYes

Fingerprint

Crystallization
Thin films
Lasers
Raman spectroscopy
Crystalline materials
Bismuth
Atomic force microscopy
Photocatalysis
Substrates
Pulsed laser deposition
Crystallites
Lighting
Phase transitions
Plastics
Imaging techniques
X ray diffraction
Experiments
Temperature

Keywords

  • bismuth vanadate
  • laser-induced crystallization
  • micropatterning
  • thin films

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Trzciński, K., Rodriguez, R. D., Schmidt, C., Rahaman, M., Sawczak, M., Lisowska-Oleksiak, A., ... Zahn, D. R. T. (2016). Micropatterning of BiVO4 Thin Films Using Laser-Induced Crystallization. Advanced Materials Interfaces, 3(4), [1500509]. https://doi.org/10.1002/admi.201500509

Micropatterning of BiVO4 Thin Films Using Laser-Induced Crystallization. / Trzciński, Konrad; Rodriguez, Raul D.; Schmidt, Constance; Rahaman, Mahfujur; Sawczak, Mirosław; Lisowska-Oleksiak, Anna; Gasiorowski, Jacek; Zahn, Dietrich R.T.

In: Advanced Materials Interfaces, Vol. 3, No. 4, 1500509, 23.02.2016.

Research output: Contribution to journalArticle

Trzciński, K, Rodriguez, RD, Schmidt, C, Rahaman, M, Sawczak, M, Lisowska-Oleksiak, A, Gasiorowski, J & Zahn, DRT 2016, 'Micropatterning of BiVO4 Thin Films Using Laser-Induced Crystallization', Advanced Materials Interfaces, vol. 3, no. 4, 1500509. https://doi.org/10.1002/admi.201500509
Trzciński K, Rodriguez RD, Schmidt C, Rahaman M, Sawczak M, Lisowska-Oleksiak A et al. Micropatterning of BiVO4 Thin Films Using Laser-Induced Crystallization. Advanced Materials Interfaces. 2016 Feb 23;3(4). 1500509. https://doi.org/10.1002/admi.201500509
Trzciński, Konrad ; Rodriguez, Raul D. ; Schmidt, Constance ; Rahaman, Mahfujur ; Sawczak, Mirosław ; Lisowska-Oleksiak, Anna ; Gasiorowski, Jacek ; Zahn, Dietrich R.T. / Micropatterning of BiVO4 Thin Films Using Laser-Induced Crystallization. In: Advanced Materials Interfaces. 2016 ; Vol. 3, No. 4.
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