Optical band gap engineering and comparison of conductivity of CaTiO3 and LiNbO3 doped PVDF films

Clyde Varner; Angela Davis; Ashok K. Batra; Padmaja Guggilla

Results in Optics (Jul 2024)

Optical band gap engineering and comparison of conductivity of CaTiO3 and LiNbO3 doped PVDF films

Clyde Varner,
Angela Davis,
Ashok K. Batra,
Padmaja Guggilla

Affiliations

Clyde Varner: Corresponding author.; Department of Physics, Chemistry, and Mathematics, College of Engineering, Technology and Physical Sciences, Alabama A&M University, Normal, AL, USA
Angela Davis: Department of Physics, Chemistry, and Mathematics, College of Engineering, Technology and Physical Sciences, Alabama A&M University, Normal, AL, USA
Ashok K. Batra: Department of Physics, Chemistry, and Mathematics, College of Engineering, Technology and Physical Sciences, Alabama A&M University, Normal, AL, USA
Padmaja Guggilla: Department of Physics, Chemistry, and Mathematics, College of Engineering, Technology and Physical Sciences, Alabama A&M University, Normal, AL, USA

Journal volume & issue: Vol. 16
p. 100720

Abstract

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This study explores the impact of CaTiO3 and LiNbO3 crystals on the optical and dielectric properties of polyvinylidene fluoride (PVDF) films. Our investigation employs UV–Visible Spectroscopy to characterize the n-π* C-F related electronic transition within the PVDF matrix. We find that CaTiO3 crystals significantly decrease the composite’s band gap and dielectric properties, enhancing its electronic and optical attributes. Conversely, LiNbO3 crystals increase the band gap energy. These variations align with observed DC conductivity changes, suggesting novel functionalities for optoelectronic, sensing, and energy storage applications.

Published in Results in Optics

ISSN: 2666-9501 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Science: Physics: Optics. Light
Website: https://www.journals.elsevier.com/results-in-optics

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