Dr. Chang Yi, Master Supervisor, joined the IAM at Nanjing Tech University in 2015. He got his BSc (2007), MSc（2010）and PhD (2014) degrees at Ludong University, Nanjing Normal University and Southeast University, respectively. From 2018-2019, he worked as visiting scholar in Department of Physics, Chemistry and Biology at Linkoping University, Sweden. His current research interests focuses on perovskite optoelectronic materials and devices. Some of work has been published in Nature Commun., Adv. Mater., JPCL, etc.