Spitzer shaped ZnO nanostructures for enhancement of field electron emission behaviors

Hierarchically interconnected ZnO nanowires for low-temperature-operated reducing gas sensors: experimental and DFT studies

The larger surface area and increased point contacts of hierarchically arranged ZnO nanowires (upper panel) offered more potential barriers for the gas molecule exhibiting binding strength CO < C₂H₅OH < NH₃ (lower panel) and provided excellent gas-sensing performance at 100 °C for NH₃ gas.

Effects of Au loading on the enhancement of photoelectrochemical activities of the Au@ZnO nano-heteroarchitecture

The nano-heteroarchitecture of Au@ZnO evidencing the surface attachment without chemical reaction at the interface delivered enhanced PEC activities by facilitating the injection of hot electrons from the SP state into the conduction band of ZnO.

Ge-doped ZnO nanowire arrays as cold field emitters with excellent performance

Elemental doping is an efficient strategy to modify the electronic and optoelectronic properties of semiconductor materials. In this work, a high-quality Ge-doped tapered ZnO nanowire array was prepared via a simple chemical vapor deposition approach. The I-V and light emission behaviors were investigated based on a single nanowire with good electrical conductivity. The Kelvin probe force microscopy and ultraviolet photoelectron spectroscopy characterizations indicate that the doped nanowires possess a largely reduced work function relative to that of the pure ZnO nanostructures. These advantages allow Ge-doped ZnO nanowire arrays to deliver excellent field emission performance, including low turn-on and threshold fields, high emission current and long-term stability.

Perforated mesoporous NiO nanostructures for an enhanced pseudocapacitive performance with ultra-high rate capability and high energy density

The morphology of NiO (1D nanobelts and 2D nanosheets) has a significant effect on the pseudocapacitive performance. The perforated and interlinked mesoporous structure of NiO nanobelts delivered higher power and energy density than nanosheets.