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Dr. Peng-Qing Bi "Optimizing the nanomorphology and molecular structure towards high-performance and low-cost photovoltaic cells"

Feb 26
February 26, 2021 8:30 am - 10:00 am
 

Guest talk

Optimizing the nanomorphology and molecular structure towards high-performance and low-cost photovoltaic cells

Organic photovoltaic (OPV) technique has been widely considered as a promising route to realize the low-cost renewable energy. The power conversion efficiency (PCE) of OPV cells has increased rapidly in the past few years due to the considerable multi-disciplinary research efforts. Further improvements in device performance and reduction in cost are still needed. In this talk, I will present our research work on improving the device performance via regulating the nanomorphology of the organic bulk heterojunctions. The corresponding changes in phase distribution, dynamics of photophysical processes as well as the non-radiative recombination in OPV cells are also systematically studied. Besides, cost is also a significant consideration in estimating the industrialization of OPV. This talk also includes our recent work on developing low-cost OPV materials, including the donors with simple structures and non-fused ring electron acceptors. Based on these materials, high PCEs under sun light and room light sources were obtained.

Bio

Dr. Pengqing Bi is a Postdoc at Institute of Chemistry Chinese Academy of Sciences (ICCAS). He received his bachelor degree in Applied Physics in 2014 at Yantai University and PhD degree in Microelectronics and Solid-State Electronics in 2019 at Shandong University. His research interests include organic semiconductor physics and device physics, time resolved fluorescence spectroscopy/microscopy, and organic photovoltaic cells. He has more than 50 papers published in peer-reviewed journals, including Nano Energy, J. Mater. Chem. A, ACS Appl. Mater. Inter., Adv. Mater., Joule, Energy Environ. Sci., etc.

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