Screen-Printable Electronic Ink of Ultrathin Boron Nitride Nanosheets

Abstract

Two-dimensional materials play a vital role in the current electronic industry in the fabrication of devices. In the present work, we have exfoliated and stabilized the insulating hexagonal boron nitride (hBN) by means of a polymer-assisted liquid-phase technique. Further, the highly viscous ink of hBN was prepared, and its printability on various commercially available substrates was studied. The morphology of the printed patterns reveals the layered arrangement of hBN. The various electrical and dielectric characterizations, carried out on a metal–insulator–metal capacitor, testified its potential applications in various fields of printed electronics.

All-2D Material Inkjet-Printed Capacitors: Toward Fully Printed Integrated Circuits

“…Refs. 18,21,22 . Indeed, as expected, the parameters of the equivalent parallel circuit representation (R p and C p ), depend on the frequency.…”

Spectroscopic Size and Thickness Metrics for Liquid-Exfoliatedh-BN

“…Liquid phase exfoliation is a versatile nanosheet production method which exfoliates layered crystals down to few-layered nanosheets in appropriate stabilizing liquids. [23][24] It has been applied to a range of layered crystals including graphite, h-BN [5][6][25][26][27][28][29] and MoS 2 and tends to yield polydisperse samples of nanosheets with broad lateral size (~100-1000 nm) and thickness (~1-20 layers) distributions. 23,[30][31] As a result, centrifugation-based size selection is required to enable any study where well-defined sizes are required.…”

Highly thermally conductive and electrically insulating polymer nanocomposites with boron nitride nanosheet/ionic liquid complexes

“…Nevertheless, producing large quantities of BNNSs is crucially important for these applications. Currently, chemical vapor deposition (CVD) methods 13,14 and liquid-phase exfoliation of bulk hexagonal boron nitrides (h-BNs) in selected solvents 2,3,[15][16][17][18][19][20] are popular for preparing BNNSs. CVD processing is effective for synthesizing large-area BNNSs on a metal substrate, 13,14 but this method requires the transfer of BNNSs from the substrate to an appropriate substrate or solvent.…”

“…CVD processing is effective for synthesizing large-area BNNSs on a metal substrate, 13,14 but this method requires the transfer of BNNSs from the substrate to an appropriate substrate or solvent. Actually, liquid-phase exfoliation of bulk h-BNs is attractive because it is extremely versatile and applicable to widely various environments, 2,3,[15][16][17][18][19][20] as in the case of exfoliation of graphites into graphenes. [21][22][23][24] However, these wet approaches for exfoliating h-BNs usually involve strong and/or extended sonication [15][16][17]20 leading to greatly decreased lateral sizes, or the use of toxic, strong acids.…”

“…Actually, liquid-phase exfoliation of bulk h-BNs is attractive because it is extremely versatile and applicable to widely various environments, 2,3,[15][16][17][18][19][20] as in the case of exfoliation of graphites into graphenes. [21][22][23][24] However, these wet approaches for exfoliating h-BNs usually involve strong and/or extended sonication [15][16][17]20 leading to greatly decreased lateral sizes, or the use of toxic, strong acids. 18,19 Therefore, as a milder liquid-phase exfoliation method, we recently reported that h-BNs were exfoliated into BNNSs in ionic liquids (ILs) under weak sonication.…”