Research Expertise and Interest
materials chemistry, sensors, nanostructures, energy conversion, nanowires, miniaturizing optoelectronic devices, photovoltaics, thermoelectrics, solid state lighting
The Yang research group is interested in the synthesis of new classes of materials and nanostructures with an emphasis on developing new synthetic approaches and understanding the fundamental issues of structural assembly and growth that will enable the rational control of material composition, micro/nano- structure, property and functionality. They are putting together a nanoscale toolbox where nanowires of different compositions and properties (metal, semiconductor) will be used as building blocks in their continuing efforts in miniaturizing optoelectronic devices. For example, semiconductor (Si, Ge, ZnO, GaN) nanowires are being synthesized using chemical vapor deposition/transport. Significant effort has also been placed on investigating the novel physical properties of the nanowire building blocks. Particularly they are interested in the thermoelectrical, photovoltaic and optoelectronic properties. Due to their high surface area, low-dimensionality and potential quantum confinement, many new physical properties are expected. These novel properties serve as the basis for miniaturized devices such as laser, photovoltaics, thermoelectrics and solar-to-fuel conversion systems.