Baitong He

Shantou University | STU · Department of Physics

This work presents a materially and structurally designed barrier thin film with a self-wrinkling morphology, which consists of composites of amorphous alumina (a-Al2O3) and polycrystalline zinc oxide (ZnO). The pure ZnO, Al2O3 films, and Al2O3-ZnO composited film are deposited on polyethylene terephthalate (PET) by magnetron co-sputtering at room...

Aluminum-doped zinc oxide (AZO) thin films are popular transparent electrodes for optoelectronics and photovoltaics. However, next generation flexible devices demand not only high conductivities but also low thicknesses in AZO electrodes to stay robust against deformations. The two requirements contradict each other due to the scattering of carrier...

Ferroelectrics are popular for sensors, actuators and transduces. However, the energy barrier for reversing the polarization leads to extra energy losses, while the hysteresis causes phase-lags and non-linearities between input and output signals. The high piezoelectric constants of ferroelectrics dictate the figure-of-merit of piezoelectric device...

The self-assembled hierarchical micro-nanostructures with geometric complexity and/or constituent diversity are becoming a promising class of candidates for the next generation nanotechnology. Different from conventional vapor-liquid-solid (VLS) eutectic liquid droplets for one-dimensional(1D) nanowires, the Zn-Bi VLS monotectic liquid droplets are...

Barium titanate (BaTiO3;BTO) is a well-known lead-free piezoelectric material commonly used for sensors and actuators applications. There are several traditional methods to fabricate bulk BTO ceramics; however, most of those methods have restrictions regarding being able to produce a functional and complex shape for specific application needs. Rece...