时间：2014年12月24日（星期三）下午15：00
地点：科技园国重大楼502报告厅

报告摘要：
       Advances in controlled synthesis, processing, and tuning of the properties of organic conjugated polymers and peroskites have enabled significantly enhanced performance of organic and hybrid electronic devices. Our laboratory employs a molecular engineering approach to develop processible low band-gap polymers with high charge carrier mobility for enhancing power conversion efficiency of single junction solar cells to ~11%. We have also developed several innovative strategies to modify the interface of bulk-heterojunction devices and create new device architectures to fully explore their potential for solar applications.
       The performance of polymer and hybrid solar cells is strongly dependent on their efficiency in harvesting light, exciton dissociation, charge transport, and charge collection at the metal/organic/metal oxide or the metal/perovskite/metal oxide interfaces. In this talk, the integrated approach of combining material design, interface, and device engineering to significantly improve the performance of polymer and hybrid perovskite photovoltaic cells (PCE of >17%) will be discussed. Specific emphasis will be placed on the development of low band-gap polymers with reduced reorganizational energy and proper energy levels, formation of optimized morphology of bulk-heterojunction layer, and minimized interfacial energy barriers using functional surfactants and graphene oxide. At the end, several new device architectures and optical engineering strategies to make tandem cells and semitransparent solar cells will be discussed to explore the full promise of polymer and perovskite hybrid solar cells.

附报告人简介：
       Professor Alex Jen obtained his Ph. D. degree from the Department of Chemistry, University of Pennsylvania in 1984. He is currently the Boeing-Johnson Chair Professor and Department Chair of the Materials Science & Engineering at the University of Washington, Seattle. He is also serving as the Chief Scientist of the Clean Energy Institute established by the governor of the Washington State.
       Dr. Jen’s research interest is focused on utilizing molecular, polymeric and biomacromolecular self-assembly to create ordered arrangement of organic and inorganic functional materials for photonics, opto-electronics, nanomedicine, and nanotechnology. He has co-authored more than 520 journal papers, given over 400 invited presentations, and has more than 22,000 citations and a H-index of 74. He is also a co-inventor for more than 50 patents and invention disclosures.
       For his pioneering contributions in organic photonics and electronics, he was elected as Fellow by several professional societies including the MRS, ACS, AAAS, SPIE, OSA, and ACS-PMSE. He was also elected as an Academician of the Washington State Academy of Sciences.
       Because of his contributions in science & engineering, he was appointed as the Changjiang Endowed Chair by the Chinese Ministry of Education, the World Class University Professor by the Korean National Research Foundation, (Chair Professor at the Zhejiang University) by the Chinese government, and recently the Distinguished Chair Professor of the Taiwan University.