National Research Foundation 

(나노소재기술개발사업)

Recently, tandem solar cells such as perovskite/Si structures are drawing strong attention in the photo-voltaic community. Direct epitaxy of III-V materials on Si is another promising approach for highly stable, scalable, and efficient Si-based multi-junction solar cells. However, challenges lie in overcoming epitaxial dislocations and residual thermal strain generated by lattice constant and thermal expansion coefficient mismatches, respectively. In this project, we aim to demonstrate highly reliable, scalable, efficiency greater than 30% III-V/Si triple-junction solar cells in collaborations with KANC, UNIST, and KOPTI.