Ph.D., Chemical Engineering, Princeton University, 2001
BSE, Materials Science and Engineering, University of Pennsylvania, 1996
BSE, Chemical Engineering, University of Pennsylvania, 1996
Honors and Awards
- Member, Defense Science Study Group, 2019
- Vanguard Series: Leader in Higher Education, NJBiz, 2018
- Julian C. Smith Lecturer, Robert Frederick Smith School of Chemical Engineering, Cornell University, 2018
- Finalist, Blavatnik National Awards for Young Scientists, 2015, 2016
- Fellow, American Physical Society, 2013
- Owens Corning Award, American Institute of Chemical Engineers, 2012
- Young Global Leader, World Economic Forum, 2012
- US Young Scientist Delegate, World Economic Forum "Summer Davos", 2010
- John H. Dillon Medal, American Physical Society, 2010
- Sloan Research Fellowship in Chemistry, 2008
- Allan P. Colburn Award, American Institute of Chemical Engineers, 2006
- O'Donnell Award in Engineering, the Academy of Medicine, Engineering and Science of Texas, 2006
- Beckman Young Investigator Award, 2005
- World's top 100 Young Innovator, MIT Technology Review, 2004
- NSF CAREER Award, 2004
- Camille and Henry Dreyfus New Faculty Award, 2002
- Director and Associated Faculty, Andlinger Center for Energy and the Environment
- Associated Faculty, Department of Chemistry
- Associated Faculty, Department of Electrical Engineering
- Associated Faculty, Princeton Environmental Institute
- Associated Faculty, Princeton Institute for the Science and Technology of Materials
Solution-processable organic conductors and semiconductors for thin-film electronics
The ability to replace thermally-evaporated metal and organic semiconductors with solution-processable counterparts as active device components will lower capital and operational costs associated with thin-film electronics fabrication. We are examining the processing-structure-property relationships of these materials to assess their viability. Current research efforts in this area focus on water-dispersible, conductive polyaniline and several p-type solution-processable anthradithiophenes. These materials, respectively, find use as electrodes and active layers in organic transistors and solar cells.
Soft lithography and soft-contact lamination for plastic electronics
The chemical- and mechanical fragility of organic semiconductors calls for the development of non-invasive patterning technologies for establishing efficient electrical contact. Our group has developed nanotransfer printing (nTP), soft-contact lamination (scL) and stamp-and-spin-cast as means to fabricate functional organic thin-film devices. Research in this area continues to explore elastomeric-stamp-based patterning schemes for creating high-resolution functional features on rigid and flexible substrates over large areas. These features are either directly transferred onto or laminated against the electrically-active components to complete the circuits of organic transistors and solar cells.
Self-assembled monolayers facilitate interfacial engineering in organic solar cells
Previously, our efforts in this area entailed the understanding the assembly of conjugated molecules on metal and semiconductor surfaces. High-resolution spectroscopic techniques, including transmission and reflectance infra-red spectroscopy and synchrotron-based near-edge X-ray absorption fine structure spectroscopy were used to elucidate the ensemble-averaged structure and orientation of the molecular assembly. Current work builds on our previous know-how; we are exploiting the molecular dipoles induced by and surface energy presented by the organization of self-assembled monolayers to engineer the electrode-photo-active later interface in organic solar cells.
- N.C. Davy, M. Sezen-Edmonds, J. Gao, X. Lin, A. Liu, N. Yao, A. Kahn, Y.-L. Loo, “Pairing of Near-Ultraviolet Solar Cells with Electrochromic Windows for Smart Management of the Solar Spectrum” Nature Energy 2, 17104, 2017.
- A.M. Hiszpanski, J. Saathoff, L. Shaw, H. Wang, L. Kraya, F. Luttich, M. Brady, M. Chabinyc, A. Kahn, P. Clancy, Y.-L. Loo, “Halogenation of a Non-planar Molecular Semiconductor to Tune Energy Levels and Bandgaps for Electron Transport” Chemistry of Materials 27, 1892, 2015.
- S.S. Lee, S.B. Tang, D.M. Smilgies, A.R. Woll, M.A. Loth, J.M. Mativetsky, J.E. Anthony, Y.-L. Loo, “Guiding Crystallization Around Bends and Sharp Corners” Advanced Materials 24, 2692, 2012.
- J.E. Yoo, K.S. Lee, A. Garcias, J.D. Tarver, E.D. Gomez, K. Baldwin, Y. Sun, H. Meng, T.-Q. Nguyen, Y.-L. Loo, “Directly Patternable, Highly Conducting Polymers for Broad Applications in Organic Electronics” Proceedings of the National Academy of Science USA 107, 5712, 2010.
- K.C. Dickey, J.E. Anthony, Y.-L. Loo, “Improving Organic Thin-Film Transistor Performance through Solvent Vapor Annealing of Solution-Processable Triethylsilylethynyl Anthradithiophene” Advanced Materials 18, 2717, 2006.