Boron Carbonitride Nanosheet/ZnO Nanorod Heterojunctions for White-Light Emission

Abstract

We report for first time the fabrication of boron carbonitride (B x C y N z ) nanosheets with a unique structural backbone comprised of B-doped graphitic carbon nitride (g-C 3 N 4 ) as well as C-doped hexagonal boron nitride (h-BN) and demonstrate their potential applications in light-emitting devices. The existence of these two types of domains in B x C y N z nanosheets bestows a fascinating electronic structure originating from the π, π*, n states of g-C 3 N 4 and the native defect states of h-BN. Like conventional B-doped g-C 3 N 4 , p-type conductivity has been perceived upon the incorporation of C into the h-BN lattice. The ternary nanosheets exhibit unique negative thermal quenching (NTQ) characteristics in photoluminescence emission, making the material stupendous for the fabrication of superior-performance light-emitting diodes using a lower injection current density at room temperature. The fabricated two-dimensional/one-dimensional heterojunction based on B x C y N z nanosheets/ZnO nanorods displays broadband white-light emission with superior intensity at a much lower turn-on voltage of ∼3 V. The fabrication of B x C y N z nanosheets with doped g-C 3 N 4 and h-BN nanodomains and the manifestation of superior light-emission characteristics with unique NTQ attributes can open up the possibility for next-generation light-emitting and display systems with outstanding luminescence stability.

Synergy between plasmonic nanocavities and random lasing modes: a tool to dequench plasmon quenched fluorophore emission

“…The synthesized samples were thoroughly washed with deionized water and ethanol and baked at 75 °C in a hot air oven to obtain highly dense ZnO NRs. 64…”

“…After the cooling of the sample at room temperature, Au NIs decorated over ZnO NRs (AuZnO) were obtained. 64,65…”

“…The synthesized samples were thoroughly washed with deionized water and ethanol and baked at 75 1C in a hot air oven to obtain highly dense ZnO NRs. 64 Synthesis of Au nanoislands on ZnO NRs. The Au NIs were fabricated by employing the thermal dewetting of Au thin films.…”

Perspectives of different colour‐emissive nanomaterials in fluorescent ink, LEDs, cell imaging, and sensing of various analytes

“…Recently, Pal et al fabricated boron carbonitride (B x C y N z ) nanosheets and then mixed these with ZnO nanorods that led to the production of white light emission. [33] The light-emissive features of the B x C y N z nanostructure materials may open up new pathways to develop flexible LEDs and display devices. 4-Mercaptobenzoic acid (4-MBA)-functionalized Ag NCs efficiently produced white light emission via an AIE mechanism.…”

Boron-Doped Exfoliated g-C3N4 Nanosheet-Based Phosphors for White Light-Emission and Photocatalytic Degradation

“…In contrast to elemental and binary systems, 2D ternary hybrid materials, such as boron carbonitride (BCN) nanosheets and ternary chalcogenides, have been established as nanomaterials with adjustable optical characteristics, providing additional degrees of freedom. − BCN is projected to have characteristics that fall between those of graphene and hBN, even though the composition is totally dependent on the preparation technique and conditions. The majority of papers describe the synthesis of BCN using either the solid-state/gas phase assembling of the separate precursors of B, N, and C or exploiting the incorporation of hBN with C. − The electronic structure of the BCN material which can be altered by varying the composition and shifting the PL emission peak, strongly influences the luminescence properties of the material.…”