Barium titanate-enhanced hexagonal boron nitride inks for printable high-performance dielectrics

Abstract

Printed electronics have been attracting significant interest for their potential to enable flexible and wearable electronic applications. Together with printable semiconductors, solution processed dielectric inks are key in enabling low-power and high-performance printed electronics. In the quest for suitable dielectrics inks, two-dimensional materials such as hexagonal boron nitride (h-BN) have emerged in the form of printable dielectrics. In this work, we report barium titanate (BaTiO3) nanoparticles as an effective additive for inkjet-printable h-BN inks. The resulting inkjet printed h-BN/BaTiO3 thin films reach a dielectric constant of ~ 16 by adding 10% of BaTiO3 nanoparticles (in their volume fraction to the exfoliated h-BN flakes) in water-based inks. This result enabled all-inkjet printed flexible capacitors with C ~ 10.4 nF cm-2, paving the way to future low power, printed and flexible electronics.

Effect of Gamma Irradiation on the Structural, Optical, Electrical, and Ferroelectric Characterizations of Bismuth-Modified Barium Titanate Ceramics

“…because of its high dielectric constant, good ferroelectric properties, and significant optoelectronic properties [1][2][3][4][5]. Additionally, BaTiO 3 is commonly used multilayer ceramic capacitor (MLCC) fabrication [6,7], homographic memories [8], waveguide modulators [9,10], IR detectors [11] and gate dielectrics [12]. Barium titanate (BT) is a member of the perovskite ABO 3 structure, where Ba 2+ occupies the corner A-site, Ti 4+ occupies the centre B site, and O 2− occupies the face centre.…”