10/28專題演講公告

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上層分類：系所公告

分類：演講

建立於 2013-10-22, 週二 17:54

最近更新於 2013-11-12, 週二 10:15

發佈於：2013-10-21, 週一 17:54

點擊數：1277

演講人：任廣禹 教授

演講題目：Rational Material Design, Interface, and Device Engineering for High-Performance and Stable Polymer Solar Cells

 演 講 人 ：任廣禹 教授—本系特聘講座教授

服務單位：Department of Materials Science and Engineering, University of Washington, Seattle

演講題目：Rational Material Design, Interface, and Device Engineering for High-Performance and Stable Polymer Solar Cells

演講時間：102.10.28上午10點20分~12點10分

演講地點：工綜館203室

演講摘要：

Advances in controlled synthesis, processing, and tuning of the properties of organic conjugated polymers have enabled significantly enhanced performance of organic electronic devices. Our laboratory employs a molecular engineering approach to develop processible and high charge carrier mobility polymers for enhancing power conversion efficiency of solar cells. 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 window applications.

 

The performance of polymer solar cells is strongly dependent on their efficiency in harvesting light, exciton dissociation, charge transport, and charge collection at the metal/organic/metal oxide interfaces. In this talk, the integrated approach of combining material design, interface, and device engineering to significantly improve the performance of polymer photovoltaic cells will be discussed. Specific emphasis will be placed on the low band-gap polymers development with low reorganization energy and proper energy levels, optimized morphology of bulk-heterojunction layer, and minimized interfacial energy barriers with functional surfactants and graphene oxide. At the end, several new device architectures and processing strategies will be discussed to explore the full promise of polymer solar cells.