3.3.1 >20% Efficiency Semitransparent Metal Chalcogenides

• Develop a comprehensive understanding of the defects and dominating performance loss mechanism will be obtained by combinational density-functional theory calculations, 2D device simulation modelling, and advanced characterisations.

• Design a transparent back electrode architecture to be compatible with chalcogenides manufacturing process.

• Evaluate long-term stability under accelerated stress in collaboration with industry.