Jeehwan Kim

Jeehwan
Kim
Assistant Professor of Mechanical Engineering
Assistant Professor of Materials Science and Engineering
Ph.D. in Materials Science & Engineering, University of California, Los Angeles
M.S. in Materials Science & Engineering, Seoul National University
B.S. in Materials Science & Engineering, Hongik University

Disciplines: 

  • Electronic Materials
  • Energy
  • Manufacturing
  • Materials Processing
  • Mechanical Behavior of Materials
  • Nanotechnology
  • Nanomechanics
  • Phase Transformations
  • Photonic Materials
  • Semiconductors
  • Surfaces, Interfaces, and Thin Films
  • Thermodynamics

Research: 

Prof. Kim's group focuses on innovation in nanotechnology for electronic/photonic/energy applications.

The group is currently developing a graphene-based layer transfer technology  which offers infinitive growths & transfers of high quality single-crystalline semiconductor films on single-crystalline graphene. Prof. Kim's team has been investigating a method to perform van der Waals epitaxy of defect-free single-crystalline films on epitaxial graphene in general material system and studying mechanics for repeatable & precise exfoliation of epilayers on graphene. The group's focus is on fabricating high performance electronic/photonic/photovoltaics devices with low manufacturing cost based on this graphene-based layer transfer technique. Based on their expertise in the van der Waals epitaxy technique, Prof. Kim's group develops the way of fabricating single-crystalline 2D materials such as graphene and TMDCs for extremely flexible inorganic electronic/photonic devices. 

Another emphasis of the group is on neurmorphic computing where we develope high on/off ratio, uniform resistive RAM arrays and realize cognitive computing functions. 

Exploring nanotechnology for high efficiency, low cost photovoltaics is also one of the key research topics in Prof. Kim's group. Group's current interests are as following: i) Geometry modification for efficiency enhancement via constructing high aspect-ratio three-dimensional solar cells, ii) Work-function engineering of carbon-based transparent electrode via plasmonic gold nanodots, and iii) Monolithic integration of organic-inorganic hybrids.

 

Jeehwan Kim joined the Mechanical Engineering faculty in September 2015. He joined the Materials Science and Engineering as a joint faculty member in February 2016. Before MIT, Kim has been a research staff member at IBM’s T.J. Watson Research Center since 2008, conducting research in photovoltaics, 2D materials, graphene, and advanced CMOS devices. He has been named a Master Inventor at IBM for his prolific creativity, with over 100 patent filings in five years. Kim’s breakthrough contributions including: demonstration of peeling of large-area single-crystal graphene grown from a SiC substrate, enabling reuse of the expensive substrate; successful growth of GaN on grapheme, with 25% lattice mismatch and demonstrating that GaN films grown from the process function well as LEDs, pointing to a new principle for growing common semiconductors for flexible electronics; and achieving high efficiency in Si/polymer tandem solar cells and 3D solar cells.

Robert H. Richards, the first department head, appears in The Technologists, a 2012 novel by Matthew Pearl.