Ultraviolet-light-driven enhanced hysteresis effect in graphene-tungsten disulfide heterostructures

Tailoring the interfacial surfaces of tungsten and molybdenum tungsten disulfide electrodes for hybrid supercapacitors

“…The Raman spectrum of WS 2 features a second-order peak (2LA(M)) near the M -point of the Brillouin zone center, and both the material samples have first-order in-plane (E 12g ) and out-of-plane (A 1g ) optical peaks. 22 As shown in Fig. 1(c) and 2(c) , SEM was adopted for analyzing the surface morphology of WS 2 and MoWS 2 layered over nickel foam (b).…”

WSe2/graphene heterojunction synaptic phototransistor with both electrically and optically tunable plasticity

“…There is a crossing point for the forward and reversed curves, which is denoted as V crossing . The hysteretic behaviors have been considered as a basic requirement for memory device [28] and the origin of hysteretic behaviors of 2D semiconductor-based FET devices is widely attributed to the dynamic response of the trapped charges at the interface of the heterojunction under an external electric field [29][30][31]. To evaluate the hysteretic characteristics of as-fabricated WSe 2 /graphene heterojunction, the dynamics of observed hysteretic behaviors have been investigated.…”

Synthesis and Spectral Characteristics Investigation of the 2D-2D vdWs Heterostructure Materials

“…First, the tube furnace was heated to 1050 °C, and the copper foil substrate was annealed and recrystallized at the temperature for 30 min. Then, while entering the growth stage, the ammonia borane can decompose to form the hydrogen (H 2 gas), aminoborane polymer (aminoborane) and borazine under the action of heating belt [ 29 ]. At the same time, boron azepine enters the high temperature heating area of tube furnace under the carrier gas action of 10 sccm H 2 .…”