The Development and Use of Dopants to Modulate the Electrical Properties of Conjugated Polymers
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Abstract
Organic semiconductors and hybrid/organic materials have attracted interest for electronic applications due to their potential for use in low‐cost, large‐area, flexible electronic devices. Here we will report on recent developments pertaining to surface modifiers and both n‐ and p‐dopants that could impact the charge injection/collection processes in organic light emitting diodes, organic field effect transistors, and organic photovoltaic and hybrid organic/inorganic perovskite devices. We will also discuss the development of organic and metallo‐organic‐ based dimers as n‐dopants and very briefly described metal dithiolene complexes as p‐ dopants for organic semiconductors and their impact of device performance. I will highlight the application of n‐doping for the development of electron injection layers for organic light emitting diodes (OLEDs), and their use for doping of electron transport materials which result in high conductivities and in some cases good thermoelectric performance. In the case of OLEDs, it will be shown that photoactivation can lead to stable doping of materials (i.e. the doping induced conductivity remains relative constant over hundreds of hours) beyond the expected thermodynamic limit, which would be predicted based on an assessment of the effective reduction potential of the n‐dopant and the reduction potential of the electron transport material.
Bio
Seth Marder is currently Regent's Professor, the Georgia Power Chair of Energy Efficiency, and Professor of Chemistry and Materials Science and Engineering (courtesy) at the Georgia Institute of Technology. He is also a co-founder of Arizona Microsystems, LLC; Focal Point, LLC; and LumoFlex, LLC. He is the former Director and currently an Associate Director of the Center for Organic Photonics and Electronics (COPE) at Georgia Tech.
Professor Marder obtained a Bachelors of Science in Chemistry from MIT in 1978 and his Doctorate from the University of Wisconsin-Madison in 1985, where he was a W. R. Grace Fellow. Professor Marder then was a postdoctoral researcher at the University of Oxford from 1985-1987. After his stay at Oxford, he moved to the Jet Propulsion Laboratory (JPL) California Institute of Technology (Caltech) where he was a National Research Council Resident Research Associate from 1987-1989.
He later became a member of the Technical Staff at the Jet Propulsion Laboratory, a member of the Beckman Institute at Caltech, and Associate Director for the Office of Naval Research Center for Advanced Multi-Functional Nonlinear Optical Polymers and Molecular Assemblies until he moved to the University of Arizona in 1998. He was the founding director of the Consortium for Advanced Nanoscopic Science and Technology at the University of Arizona and is the Deputy Director and co-principal investigator for the National Science Foundation Science and Technology Center: Materials and Devices for Information Technology Research. In 2003 he moved to the School of Chemistry and Biochemistry at the Georgia Institute of Technology where he was appointed the founding director for the Center for Organic Photonics and Electronics, and holds a courtesy appointment in the School of Materials Science and Engineering. He is an Associate Director for a Department of Energy funded Energy Frontier Research Center. In addition Professor Marder is a Guest Professor at Shanghai Jiaotong University, Huazhang University of Science and Technology, Anhui University, Wuhan University, and was an invited Visiting Professor at the Ecole Normale Supérieure de Cachan.
His research interests are in the development of materials for organic electronics, organic solar cells, and organic nonlinear optics, applications of organic dyes for photonic, display, electronic, and medical applications, surface science and interfaces, and organometallic chemistry.
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