Dr. Hong Sung-Jun's research team at KIER has developed hole transport material* based on self-assembled monolayer** that can dramatically improve the efficiency and stability of perovskite solar cells, which is necessary for realizing high-efficiency tandem solar cells.
* Hole transport material : Helps to not only facilitate the smooth transport of holes in the perovskite solar cell but also suppresses the recombination of generated charges to help improve device performance
** Self-assembled monolayer (SAM) : Regularly well-ordered monolayers spontaneously deposited on the surface of a given substrate

The study results are expected to provide the molecular design principle of hole transport materials to develop high-performance perovskite solar cells. They can also be applied to developing high-efficiency multi-junction solar cells that can overcome the theoretical limiting efficiency of silicon solar cells by using the developed materials.

This research result was recognized for its excellence and was selected for the January front cover of 'Advanced Energy Materials (IF 29.368)', the best international academic journal in the energy field.