1. Development of new process for high-efficiency crystalline Si based solar cells.

2. Novel photovoltaic oxides components and multi-junction oxided-based solar cell devices.

3. Plasmonic solar cells.

4. ZnO-based single crystal epitaxial films and optoelectronic devices.

5. Metal-ZnO interface engineering, contact and heterostructures.

6. Nanostructure and nano-optoelectronic ZnO-based materials and devices.