The Research areas  of Prof. Gong are in electronic, functional, and sustainable energy materials thin films, nanostructures, heterostructures and devices. Considerable efforts have been made in the design, fabrication and study of electronics and functional thin films and structures. PVD, CVD and chemical solution techniques are used for thin film deposition and nanostructure fabrication. Transmission electron microscopy (TEM), electron diffraction and several other material characterisation methods are also of interest to my research group. Of particular interest and concentration are supercapactors, solar cells and transparent and functional semiconducting and conducting oxide (TSO and TCO) and compound semiconductor thin films; nanostructures and devices, owing to their unique and special applications; supercapacitors; solar cells; functional devices. One of the most challenging and difficult parts of the TSOs work is the fabrication of highly conductive p-type TSOs and compound semiconductors, whose success can lead to new generation devices and applications.