Xiong Gong, College of Polymer Science and polymer Engineering, University of Akron, High Performance Solution-Processed Perovskite Hybrid Solar Cells via Novel Materials and Device Engineering

Date: , 12:45 pm-1:45 pm
Location: Rockefeller 221 (Miller Room)
Website: http://www.uakron.edu/dpe/people/profile.dot?id=ba5643cd-fccb-416e-830d-64d51f4830ee

Efficiently and economically harnessing the solar energy via photovoltaic (PV) devices presents one of promising solutions to the global energy crisis. However, over 80% available PVs are silicon-based solar cells and inorganic thin film solar cells, which are expensive and require critical processing techniques. Solution-processed perovskites hybrids PVs have shown great potential as novel, high-efficient and low-cost PV devices, which are renewable, economic and green energy sources in the future energy market. In this presentation, I would like to share with you how we approach efficient solution-processed perovskite hybrid solar cells.

• In order to facilitate electron extraction efficiency in perovskite hybrid solar cells and make it comparable to that of hole, we, for the first time, demonstrate bulk heterojuncion perovskite hybrid solar cells with enhanced efficiency and less photo-hysteresis;
• By reengineering the interface of perovskite materials and applying for novel high electrical conductive hole extraction layer, we are able to approach dramatically boosted efficiency from solution-processed perovskite hybrid solar cells;
• By utilizing either Co2+ or other transition metal to substitute Pb2+ to enhance and balance charge carrier transporting properties, we are able to demonstrate over 18.56 % efficiency from solution-processed perovskite hybrid solar cells.