Jianhui Hou, PhD, Professor, Institute of Chemistry, Chinese Academy of Sciences (ICCAS). In 2006, Dr. Hou got his PhD degree at ICCAS; during 2006-2008, he worked at UCLA as the postdoctoral researcher; during 2008-2010, he worked in Solarmer Energy Inc. as the Director of the research division. At the end of 2010, he joined ICCAS and build a research team. Dr. Hou’s research focuses on organic photovoltaic materials. Two of his major interests: (a) Design and synthesis of new conjugated polymers towards the applications in highly efficient polymer solar cells; (b) Improving photovoltaic performance of polymer solar cells by morphology control. In the past few years, he has co-authored >300 papers in peer-reviewed journals and published 25 patents.
Organic solar cell (OSC) is a very promising photovoltaic technology. Over the past decades, the power conversion efficiencies (PCEs) of OSCs have been promoted from about 1% to currently over 19% for single-junction devices and over 20% for double-junction tandem devices. The development of new organic photovoltaic materials, including donor, acceptor and interlayer material, contributed greatly to the rapid increase of PCEs. A variety of effective molecular design and aggregation structure control methods have been developed to optimize the molecular energy levels, absorption spectra, mobility and phase separation morphology of the photovoltaic active layers. In this presentation, some general and efficient molecular design strategies related to these two polymer donors will be summarized and introduced. What is more, some of our recent progress including the single-junction OSCs with over 19% PCE and the double-junction tandem OSCs with over 20% PCE will be briefly introduced.
Figure 1: Photovoltaic characteristics of the highly efficient single- and double-junction organic solar cells.