Keon Jae Lee (이건재)

Associate Professor, Ph.D  

  Department of Materials Science and Engineering

Department of Electrical Engineering

       Korea Advanced Institute of Science and Technology (KAIST),










W-1 Building # 4306    (Map)

Department of Materials Science and Engineering, KAIST

373-1 Guseong Dong, Yusung-gu, Daejeon, Korea, Zip:305-701

Phone:8242-350-3343, Fax:8242-350-3310


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).

2012-2015:        Director, Flexible and Nanobio National Research Lab. (National Research Foundation of Korea)

2011-present:     Constultant to KOLON, Center for KOLON-KAIST Lifestyle Innovation.

2014- present:    Chairman, Internation Standardization Consortium of Flexible Semiconductor, Korean Semicondor 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 material interaction for flexible electronics and nanomaterials

      Low temperature polysilicon (LTPS)  

      Laser lift-off for flexible electronic and display

      Laser material interaction with 2D nanomaterial synthesis

Flexible electronic & optoelectronic devices

              Flexible large scale integration (LSI)

              Flexible GaAs/GaN light emitting devices (LED) for optogenetic applications

      Flexible electronics for invivo biomedical applications

Flexible self-powered energy devices.

              Flexible piezoelectric energy harvesting and strorage devices

              Flexible triboelectric energy harvesting devices

              Self-powered biomedical devices such as pacemaker and deep brain stimulator

Next Generation Memory Devices

              BCP self assembly for low-power PRAM

              BCP self assembly for memristor devices

              Flexible memory (RRAM, PRAM & Flash Memory)    

              Self-structured filament nanoheater for PRAM

Lab-on-a-chip (LOC) for bio-molecule detection

    Biochip using capillary electrophoresis electrochemistry detection (CEEC) for separating neurotransmitter molecules

         Microfluidics using PDMS soft lithography   

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

2015 Prof Lee won 'Advanced Materials Scientist Award' from International Association of Advanced Materials (IAAM, Sweden)

2015  Prof. Lee won '2014 KAIST Top 10 Research Award'

2014 Prof. Lee gave an invited talk at Summer Davos Forum as KAIST Representative.

2014 Prof. Lee won Minister's Award from Ministry of Science, ICT and Future Planning. (미래창조과학부 장관상 수상)

2014  Cover feature articles for Advanced Materials (April, July & Nov), Advanced Functional Materials (May), and Small (Jan).

2014  Prof. Lee gave an invited talk at Harvard University and MIT.

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

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, KAIST)

"Self-powered Deep Brain Stimulation via a Flexible PIMNT Energy Harvester"  Energy Environ. Sci. 8, 2677, 2015

"Self-Structured Conductive Filament Nanoheater for Phase Change Memory"  ACS Nano, 9, 6587, 2015

"Performance Enhancement of Electronic and Energy Devices via Block Copolymer Self-Assembly" Adv. Mater., 27, 3982, 2015

"Hyper-Stretchable Elastic Composite Energy Harvester "  Adv. Mater.,  27, 2866, 2015  

"Flexible Phase Change Memory Array via Block Copolymer Self-assembly" ACS Nano, 9, 4120, 2015

"Reconfigurable Rectified Flexible Energy Harvester via Solid-State Single Crystal Grown PMN–PZT", Adv. Energy Mater.  5, 1500051, 2015

"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. 4, 646, 2015

"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  

"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.

Representative Publications

(in UIUC)


"Heterogeneous Three Dimensional Electronics by Use of Printed Semiconductor Nanomaterials", Science, 314, 1754, 2006.

“Transfer Printing by Kinetic Control of Adhesion to a Soft, Elastomeric Stamp”, Nature Materials, 5, 33, 2006.

"Large Area, Selective Transfer of High Performance Si Transistors on Flexible Substrates", Adv. Mater., 17, 2336, 2005.

"Fabrication of Stable Metallic Patterns Embedded in PDMS for Non-Planar Electronics", Adv. Func. Mater., 15, 557, 2005.