Presentation Title

Fabrication of High–Quality Croconic Acid thin films

Faculty Mentor

Sara Callori, Renwu Zhang

Start Date

18-11-2017 2:15 PM

End Date

18-11-2017 3:15 PM

Location

BSC-Ursa Minor 5

Session

Poster 3

Type of Presentation

Poster

Subject Area

physical_mathematical_sciences

Abstract

Ferroelectric materials have demonstrated diverse technological applications, with thin films of particular interest. Croconic Acid, an organic ferroelectric, is promising due to its economic, scalable production and large ferroelectric polarization. The films are prepared in a thermal deposition chamber under an ultrahigh vacuum system at a pressure of at least 1×10^-7 Torr. The bulk material is heated at about 130°C to 140°C. During the deposition, electric field guidance is utilized in order to promote the alignment of Croconic Acid molecules as they make their way to an ultra-flat substrate. Here we present results on room temperature growth of Croconic Acid thin films using two different methods to create an electric field in order to achieve a high quality smooth surface film. One method was using a mesh screen and the other was using a metal washer in order to create an electric field, each of an equal strength of 2kV. Atomic force microscopy was used to assess film thickness and surface structure and roughness.

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Nov 18th, 2:15 PM Nov 18th, 3:15 PM

Fabrication of High–Quality Croconic Acid thin films

BSC-Ursa Minor 5

Ferroelectric materials have demonstrated diverse technological applications, with thin films of particular interest. Croconic Acid, an organic ferroelectric, is promising due to its economic, scalable production and large ferroelectric polarization. The films are prepared in a thermal deposition chamber under an ultrahigh vacuum system at a pressure of at least 1×10^-7 Torr. The bulk material is heated at about 130°C to 140°C. During the deposition, electric field guidance is utilized in order to promote the alignment of Croconic Acid molecules as they make their way to an ultra-flat substrate. Here we present results on room temperature growth of Croconic Acid thin films using two different methods to create an electric field in order to achieve a high quality smooth surface film. One method was using a mesh screen and the other was using a metal washer in order to create an electric field, each of an equal strength of 2kV. Atomic force microscopy was used to assess film thickness and surface structure and roughness.