Yueh-Lin (Lynn) Loo

Theodora D. '78 and William H. Walton III '74 Professor in Engineering
Professor of Chemical and Biological Engineering
Office Phone
A323 Engineering Quad

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

  • Elected Fellow, Materials Research Society, 2020
  • Thomas 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


  • 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 Materials Institute

Research Interests



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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.

bends and corners

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.

Selected Publications
  1. 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.
  2. 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.
  3. 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.
  4. 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.
  5. 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.