PRISM/PCCM SEMINAR SERIES SPRING 2020: Seth Marder, Georgia Institute of Technology

Wed, Feb 5, 2020, 12:00 pm

Applications of Molecular Dopants and Interface Modifiers for Electronic and Opto-Electronic Applications

Abstract: Organic, hybrid, and 2D 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 dopants that could impact the charge injection/collection/transport processes in organic light emitting diodes, organic field effect transistors, and photovoltaic devices.  In particular, we will examine how N-heterocylic carbenes assemble on gold substrates, the impact of the surface dipole on the work function of the gold.  We will also discuss the development of metallocenes-based dimers as n-dopants and very briefly describe metal dithiolene complexes as p-dopants for organic semiconductors and their impact of device performance.

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.  “Organometallic Dimers: Application to Work-Function Reduction of Conducting Oxides,”, ACS Appl. Mater. Interfaces 7, 4320-4326 (February 2015, DOI: 10.1021/am5087648)
  3. “Controlled Doping of Large-Area Trilayer MoS2 with Molecular Reductants and Oxidants,” Adv. Mater. 27, 1175-1181 (February 2015, DOI: 10.1002/adma.201404578)
  4.  “n-Dopants based on dimers of benzimidazoline radicals: Structures and mechanism of redox reactions.” Chem. Eur. J. 21, 10878-10885 (June 2015, DOI: 10.1002/chem.201500611)
  5.  “Effective Work Function Reduction of Practical Electrodes Using an Organometallic Dimer.” Adv. Funct. Mater. 26, 2493-2502 (March 2016, DOI: 10.1002/adfm.201504680)
  6. “Controlled n-Type Doping of Carbon Nanotube Transistors by an Organorhodium Dimer.” Nano Lett. 16, 4329-4334 (July 2016, DOI: 10.1021/acs.nanolett.6b01393)
  7. “Reduction of the Work Function of Gold by N-Heterocyclic Carbenes.” Chem. Mater. 29, 3403-3411 (2017, DOI:10.1021/acs.chemmater.6b04213)
  8. “High Conductivity in a Nonplanar n-Doped Ambipolar Semiconducting Polymer.” Chem. Mater. 29, 9742-9750 (2017, DOI:10.1021/acs.chemmater.7b03516)
  9. “Beating the thermodynamic limit with photo-activation of n-doping in organic semiconductors.” Nat. Mater. 16, 1209/1-9 (2017, DOI:10.1038/nmat5027)

Bio: Seth Marder is currently the Georgia Power Chair of Energy Efficiency and Regents’ Professor in the School of Chemistry and Biochemistry and a Professor of Materials Science and Engineering (courtesy) at the Georgia Institute of Technology (Georgia Tech).  He is the director of Georgia Tech’s Center for the Science and Technology of Advanced Materials and Interfaces as well as an Office of Naval Research Center for Advanced Organic Photovoltaics. Dr. Marder received his BA in Chemistry from MIT in 1978 and his Ph.D. from the U. of Wisconsin-Madison in 1985. After completing his postdoctoral work at the University of Oxford from 1985–1987, he moved to the Jet Propulsion Laboratory (JPL) at Caltech. Marder has served on numerous advisory boards for journals and is the Founding Chair of the Editorial Board for the Royal Society of Chemistry premier materials journal. Marder is a fellow of the: National Academy of Inventors, American Physical Society, Royal Society of Chemistry, Materials Research Society, Photo-Optical Instrumentation Engineers (SPIE), Optical Society of America and American Association for the Advancement of Science.  He received a NSF Special Creativity Award Extension, the Lew Allen Award for Research, from JPL, the MRS Mid-Career Award, the American Chemical Society, Arthur C. Cope Scholar Award, and Georgia Tech’s Class of 1934 Distinguished Professor Award- Georgia Tech’s highest recognition for a faculty member.  He was Co-Chair of the  2014 Gordon Research Conference of Electronic Processes in the Organic Solid State. He has an H-index >105, with > 55,000 citations (Google Scholar), has 39 granted patents, and served as a mentor for of 250 students, postdoctoral and visiting researchers.

All seminars are held on Wednesdays from 12:00 noon-1:00 p.m. in the Bowen Hall Auditorium Room 222. A light lunch is provided at 11:30 a.m. in the Bowen Hall Atrium immediately prior to the seminar.

Bowen Hall Auditorium 222