Materials Science & Engineering Colloquium
Date: April 29, 2016 from 11:10 am to 12:10 pm EDT
Location: Columbia University, Morningside Campus,
Room 825 S.W. Mudd (NEW ROOM)
Contact: For further information regarding this event, please contact Chris A. Marianetti by sending email to or by calling 212-854-9478.
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Room Change: 825 Mudd

Professor Seth R. Marder

School of Chemistry and Biochemistry,
School of Materials Science and Engineering, and
Center for Organic Photonics and Electronics,
Georgia Institute of Technology

"Interface Chemistry for Organic Electronics and Opto-electronics"

Abstract: Organic semiconductors 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 dopants that could impact the charge injection/collection processes in organic light emitting diodes, organic field effect transistors, and organic photovoltaic devices. In particular, we will examine how phosphonic acids assemble on ITO substrates, the impact of the surface dipole on the work function of the ITO and electron transfer kinetics across surface modifiers. We will also discuss the development of metallocenes-based dimers as n-dopants and very briefly described metal dithiolene complexes as p-dopants for organic semiconductors and their impact of device performance.

Biography: Seth R. Marder obtained his Ph.D. from the University of Wisconsin-Madison in 1985. After completing postdoctoral research at the University of Oxford and at the Jet Propulsion Laboratory (JPL) California Institute of Technology (Caltech) as a National Research Council Resident Research Associate, he became a member of the Technical Staff at the JPL. In 1998, he moved to the University of Arizona where he was a Professor of Chemistry and Optical Sciences. In 2003, he joined the Georgia Institute of Technology where he is currently a Regents' Professor of Chemistry and Materials Science and Engineering (courtesy) and the Georgia Power Chair in Energy Efficiency.

Marder is a recipient of the American Chemical Society Arthur C. Cope Scholar Award, Materials Research Society (MRS) Mid-Career Award, and Fellow of the Optical Society of America, Society of Photo-optical Instrumentation Engineers (SPIE), American Physical Society, Royal Society of Chemistry, the American Association for the Advancement of Science and the MRS. His research interests are in the development of materials for nonlinear optics, applications of organic dyes for photonic, display, electronic and medical applications, and organometallic chemistry.

Selected References:

1. "n-Doping of Organic Electronic Materials using Air-Stable Organometallics," Adv. Mater. 24 (5), 699-703 (February 2012, DOI: 10.1002/adma.201103238)

2. "Spatially modulating interfacial properties of transparent conductive oxides: Patterning work function with phosphonic acid self-assembled monolayers," Adv. Mater. 24 (5), 642-646 (February 2012, DOI: 10.1002/adma.201102321)

3. "Solution doping of organic semiconductors using air-stable n-dopants." Appl. Phys. Lett. 100, 083305 (February 2012)

4. "A universal method to produce low work function electrodes for organic electronics," Science 336 (6079), 327-332 (April 2012, DOI: 10.1126/science.1218829)

5. "The modification of indium tin oxide with phosphonic acids: Mechanism of binding, tuning of surface properties, and potential for use in organic electronic applications." Acc. Chem. Res. 45 (3), 337-346 (May 2012)

6. "Ultralow doping in organic semiconductors: Evidence of trap filling." Phys. Rev. Lett. 109 (17), 176601/1-5 (November 2012, DOI: 10.1103/PhysRevLett.109.176601)

7. "Reduction of contact resistance by selective contact doping in fullerene n-channel organic field-effect transistors." Appl. Phys. Lett. 102, 153303-153307 (April 2013, DOI: 10.1063/1.4802237)

8. "Orientation of phenylphosphonic acid self-assembled monolayers on a transparent conductive oxide: A combined NEXAFS, PM-IRRAS, and DFT study," Langmuir 29, 2166-2174 (February 2013, DOI: 10.1021/la304594t)

9. "Production of Heavily n- and p-Doped CVD Graphene with Solution-Processed Redox-Active Metal-Organic Species," Materials Horizons Advance Article (September 2013, DOI: 10.1039/C3MH00035D)

10. "ITO Interface Modifiers Can Improve Voc in Polymer Solar Cells and Suppress Surface Recombination" J. Phys. Chem. Lett. 4 (23), 4038-4044 (November 2013, DOI: 10.1021/jz4021525)