Growth of ZnO nanorods on the surface and edges of a multilayer graphene sheet

Pressure Sensitivity of Charge Conduction Through the Interface Between a Metal Oxide Nanocrystallite and Graphene

“…It follows that the device would show the same level of sensitivity at submicron dimensions. Considering the reported growth of isolated submicron faceted ZnO nanocrystallites on various substrate, [59,62,66,67] the fabrication of submicron ZnO/ Gr pressure sensors appear practical. The reproducibility of the response levels are examined by repeated pressure loading and unloading at a fixed biasing voltage.…”

“…The surface of HOPG has the surface properties of a multilayer graphene. [ 57,58 ] The concept has been experimentally confirmed by recording similar electronic properties for the contacts of the HOPG and graphene with a number of seminal III–V semiconductors, [ 57,59 ] and the observed electronic features of the HOPG/ZnO contacts have been described by assuming same electron energy diagrams for the HOPG surface as graphene. [ 60 ] While working with graphene monolayer has its explicit difficulties, clean HOPG surfaces are easily obtained by cleaving bulk HOPG perpendicular to its c axis.…”

“…The ZnO/HOPG junctions demonstrate ohmic or diode-like characteristics depending on whether the device is annealed in reducing or oxidizing atmosphere, respectively, [57,59,60] implying the significance of the interfacial oxygen species in shaping the electronic features in MO/HOPG structures. Here, we use ab initio modeling for determining the structure of ZnO/Gr junctions, foreseeing very different current-voltage (I-V) characteristics for those formed at zinc-rich and oxygen-rich environments, and predict pressure sensitivity for the latter.…”

Nanocone structures with limited interspace grown by MOVPE

“…The theoretical and experimental studies have revealed the new finding in the substantial improvements of both optical and electrical properties based on the geometrically designed 3D-graphene MoS 2 structures [3]. The structures exhibited excellent light absorption (between 300 and 800 nm), which was attributed (1) to the favourable energy band for the efficient charge transfer between the electronically inter-connected graphene and MoS 2 , and (2) to the orientation of the MoS 2 crystal face array.…”

Electronic Properties of Graphene-ZnO Interface: A Density Functional Theory Investigation

“…25,28,32,[35][36][37][38] This discrepancies has been related to the surface polarity 33 or the oxygen pressure during the deposition of ZnO layer. 36,37 We have compared the Schottky barrier for ZnO surfaces with different oxygen density at the interface. Moreover, we have investigated the influence of oxygen vacancies at the interface on the height of the Schottky barrier.…”