A NEW MATERIAL- BISMUTH OXIDE THIN FILMS

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A NEW MATERIAL- BISMUTH OXIDE THIN FILMS

• Linna Du
• Environmental Engineering

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Introduction

• Bismuth oxide (Bi2O3)
• Crystalline structure of Bi2O3

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The characteristics of Bi2O3 in thin films

• A significant band gap,
• high refractive index ,
• dielectric permittivity,
• marked photoconductivity
• photoluminescence.
• The crystalline structure of bismuth oxide films
  is mainly determined by the crystalline structure
  of the substrate.
• The crystalline structure of bismuth oxide films
  strongly depends on the nucleation and growth
  processes at filmsubstrate interface

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Three typical bismuth oxide films with different
thicknesses

• Nanocrystallites of different dimensions and
  geometric shapes, with the basis laying on the
  film surface.

Thickness increases about ten times
Thickness increases about three times
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Application

• Industry application
• optical coatings,
• gas sensor,
• microwave integrated circuits.
• photovoltaic cells,

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Cost

• Worldwide, five companies are presently offering
  commercial thin-film PV CIGS products
• Wurth Solar (Germany),
• Global Solar (USA),
• Honda (Japan),
• Showa Shell (Japan),
• Sulfurcell (Germany)
• The exactly cost is ?

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References

• Wikipedia, the free encyclopedia.
• http//en.wikipedia.org/wiki/Bismuth_oxide
• L. Leontie, Structural and optical
  characteristics of bismuth oxide thin films,
  Surface Science 507510 (2002) 480485
• R B Patil, R K Puri, Intrinsic stress of bismuth
  oxide thin films effect of vapour chopping and
  air ageing, 2008 J. Phys. Conf. Ser. 114
• T.P. Gujar, V.R. Shinde, Bismuth oxide thin films
  prepared by chemical bath deposition (CBD)
  method annealing effect, Applied Surface
  Science, 250 (2005) 161-167

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Thank you!