Keon Jae Lee (̰)

Associate Professor, Ph.D  

  Department of Materials Science and Engineering

Department of Electrical Engineering

Director, Flexible and Nanobio National Research Lab.

       Korea Advanced Institute of Science and Technology (KAIST),














W-1 Building # 4306    (Map)

Department of Materials Science and Engineering,

Korea Advanced Institute of Science and Technology 

373-1 Guseong Dong, Yusung-gu,

Daejeon, Korea, Zip:305-701




URL  : 

CV    : Prof. Lee's CV

 University of Illinois at Urbana-Champaign, IL, United States. (Ph.D, 2006)

 Yonsei University, Seoul, Korea (B.S., 2001)

 Daewon Foreign Language High School (1994)

Prof Lee.jpg









2009-present:    Associate Professor, Dept. of Materials Science and Engineering, KAIST 

                                                                   Dept. of Electrical Engineering, KAIST  

2013-2014:        Visiting Professor, Harvard Medical School, Harvard University, Boston, MA  

                             Wellman Center for Photomedicine, Massachusetts General Hospital (MGH).

2012-present:    Director, Flexible and Nanobio National Research Lab. (National Research Foundation of Korea)

2011-present:    Consultant to KOLON Executives, Center for KOLON-KAIST Lifestyle Innovation

2014-present:     Chairman, International Standardization Consortium of Flexible Semiconductor, Korea Semiconductor Industry Association

Current Research:

 High performance flexible and stretchable electronics

 Flexible energy harvesting and strorage systems

 Flexible LED for implantable biomedical applications

 Flexible large scale integration (LSI) and memory (memristor, phase change and Flash memory)

 Laser material interaction for future flexible nanoelectronics

 Flexible and stretchable sensors & user-interface

 Graphene research using laser material interaction


Research Experience:


Laser technology for flexible nanomaterials and nanoelectronics

      Sequential lateral solidification (SLS) laser systems for low temperature polysilicon (LTPS)  

      Laser technology for flexible electronics

      Laser interaction with nanomaterials

Fabrication of  3D nano-transistors for next generation logic transistors.

              Developing 3D vertical nanotransistors (called surrounding gate transistors (SGT))

      New functional circuits of SGT such as DRAM, SRAM, MPU, ultra high speed logics

      Device design using TCAD device & process simulation (SILVACO)

Fabrication of flexible electronic & energy devices on large area plastics

              Flexible ultrathin Si large scale integration & GaN light emitting devices (LED) for biomedical applications

      Flexible energy havesting and storage systems

      Flexible memory (RRAM, PRAM)   

Fabrication of lab-on-a-chip (LOC) devices for bio-molecule detection

    Fabrication of LOC device using capillary electrophoresis electrochemistry detection (CEEC) for separating neurotransmitter molecules

         Microfluidics using PDMS soft lithography for biochips     

Analytical equipment

         Scanning electron microscopy (SEM), Transmission electron microscopy (TEM)

         Secondary ion mass spectroscopy (SIMS),  Raman spectroscopy

         Atomic Force microscopy (AFM), X-ray diffraction analysis, X-ray photoelectron spectromether (XPS)

Microfabricaton techniques

     Nanopatterning (50 -100 nm) and soft lithography

     UHV thin film growth of energy and semiconductor materials

        Dry & Wet etching : Inductively coupled plasma etching (ICP)    

Electrical property measurement

        LED measurement of EL, PL, CIE and power intensity

        Memory measurement for RRAM, PRAM and Flash memory,

        Capacitance-Voltage and Current-Voltage measurements


Honor and Awards

2013  Cover feature articles for Advanced Materials (April & Jul), Advanced Functional Materials (May), and Small (Jan).

2013  Cover feature article for the Dec issue of Advanced Energy Materials

2013  Prof. Lee will give an invited talk at Harvard University and MIT.

2012  Flexible battery is highlighted in Nature as ' The Most Viewed Papers in Science'.

2012  Prof. Lee won '2012 Merck Young Scientists Awards' from 12th International Meeting on Information Display. (IMID, Aug 12)

2012  Cover feature article for the Jun issue of Advanced Materials

2012  FAND group  was selected for National Research Laboratory from National Research Foundation of Korea.

2012  Prof. Lee gave 'Keynote Speak' at International SPIE Conference  (San Diego, Aug 2012)

2012  Prof. Lee gave 'Plenary Speak' at International Conference of Chinese Society of Micro-Nano Technology (Hangzhou, Nov 2012).

2011  Prof. Lee won '2011 KAIST Technology Innovation Award'

2011  Flexible RRAM technology is broadcasted by 9 o'clock news of Korean Broadcast Systems (KBS) & Reuter

2011  FAND group's flexible technology is selected as KAIST BRAND Project

2010  Thin Film Nanogenerator is selected as 'Top 10 Lifestyle Innovation Technology', Donga Science

2009  George Smith Award for the best paper published in IEEE Elect. Dev. Lett. in 2008

2007  Cover feature article for the May issue of Applied Physics Letters

2006  Three dimensional chips are published in Science Journal.

2006  The patents of printed semiconductor technology are licensed to Semprius Inc.

2006  Printed semiconductor technology won 2006 Innovation Award of Wall Street Journal

2006  Cover feature article for the Jan issue of Nature Materials

2005  Cover feature article for the April issue of Advanced Functional Materials

2004  Cover feature article for the June issue of Applied Physics Letters

Representative Publications (Corresponding Author)

"Hyper-Stretchable Elastic Composite Energy Harvester "  Adv. Mater., 10.1002/adma.201500367

"Flexible Phase Change Memory Array via Block Copolymer Self-assembly" ACS Nano, 10.1021/acsnano.5b00230

"Reconfigurable Rectified Flexible Energy Harvester via Solid-State Single Crystal Grown PMN–PZT", Adv. Energy Mater.  10.1002/aenm.201500051

"Self-powered Flexible Electronic Systems" Invited Review, Nano Energy, 10.1016/j.nanoen.2014.12.003

"Flexible Piezoelectric Energy Harvester and Nanosensor for Biomedical Applications" Adv. Healthcare Mater. 10.1002/adhm.201400642

"Topographically-Designed Triboelectric Nanogenerator via Block Copolymer Self-Assembly" Nano Letters, 14, 7031, 2014

"Reliable Control of Filament Formation in Resistive Memories by Self-assembled Block Copolymer" ACS Nano, 8 9492, 2014

"Flexible Crossbar Resistive Memory Arrays via Inorganic-based Laser Lift-off "  Adv. Mater., 26, 7480, 2014

"Flexible Inorganic Piezoelectric Acoustic Nanosensor for Biomimetic Artificial Hair Cell" Adv. Func. Mater., 24, 6914, 2014

"Self-powered Fully-Flexible Light Emitting Systems enabled by Flexible Energy Harvester "  Energy Environ. Sci., 7, 4035, 2014

"Laser-Induced Solid Phase Doped Graphene" ACS Nano, 8, 7671, 2014

"Self-Powered Cardiac Pacemaker by Flexible Nanogenerator"  Adv. Mater. 26, 4880, 2014

"Flexible PZT Thin Film Nanogenerator using Laser Lift off" Adv. Mater. 26, 2514,2014

"Lead-Free Nanocomposite Generator Using Alkaline Niobate Particles and Metal Nanorods Filler" Adv. Funct. Mater. 24, 2620, 2014  

"Electrical Biomolecule Detection Using Nanopatterned Silicon via Block Copolymer Lithography" Small,  10, 337, 2014

"Virus-Directed Design of a Flexible BaTiO3 Nanogenerator" ACS Nano, 7, 11016, 2013

"Large-area Nanocomposite Generator based on Lead Zirconate Titanate", Adv. Energy Mater.  3, 1539, 2013

"In vivo Silicon Based Flexible RFICs Monolithically Encapsulated with LCP", ACS Nano, 7, 4545, 2013.

"Self-assembled Incorporation of BCP Nanostructures in Phase-change Memory for Switching Power Reduction", ACS Nano, 7, 2651, 2013.

"Bendable Inorganic Thin-Film Battery for Fully Flexible Electronic Systems", Nano Letters, 12, 4810, 2012.  

"Flexible Nanocomposite Generator Made of BaTiO3 Nanoparticles and Graphitic Carbons", Adv. Mater., 24, 2999, 2012.

"Flexible Memristive Memory Array on Plastic Substrates", Nano Letters, 11, 5438, 2011

"Piezoelectric BaTiO3 Thin Film Nanogenerator on Plastic Substrates", Nano Letters, 10, 4939, 2010.

"Water-resistant Flexible GaN LED on a Liquid Crystal Polymer Substrate for Implantable Biomedical Applications", Nano Energy, 1, 145, 2012.