The group warmly welcomes two new postdoc fellows Dr. Yoon Ho Lee and Dr. Jiaonan Sun joining us. Dr. Lee received his PhD in Chemical Engineering from POSTECH with Prof. Joon Hak Oh. He will be co-advised by Prof. Dou and Prof. Mei on perovskite solar cells. Dr. Jiaonan Sun received her PhD in Chemistry from Ohio State University with Prof. Yiying Wu. She will work on developing novel and stable OSiPs for solar cells and LEDs. Welcome to the group. Look forward to working together!