Theodora D. '78 and William H. Walton III '74 Professor in Engineering
Role
Professor of Chemical and Biological Engineering
Office Phone
609-258-9091
lloo@princeton.edu
Assistant
Jacqueline Armstrong
Office
A323 Engineering Quad
Website
http://loogroup.princeton.edu/
CV
loo_cv.pdf
Degrees
Ph.D., Chemical Engineering, Princeton University, 2001
BSE, Materials Science and Engineering, University of Pennsylvania, 1996
BSE, Chemical Engineering, University of Pennsylvania, 1996
Advisee(s):
Alan B. Kaplan
Rudolph (Trey) Holley
Marko Ivancevic
Tianran Liu
Bio/Description
Honors and Awards
Elected Fellow, Materials Research Society, 2020Thomas A. Edison Patent Award, Research and Development Council of New Jersey, 2020
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
Affiliations
Director and Associated Faculty, Andlinger Center for Energy and the EnvironmentAssociated 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
Research Interests
?
?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.
?
?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.
?
?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.
Selected Publications
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.
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Research Areas
Complex Materials and Processing
Energy and Environment