Geon-tae Hwang
Flexible and Nanobio Device Lab.
Department of Materials Science and Engineering
Korea Advanced Institute of Science and Technology (KAIST)
373-1 Guseong Dong, Yusung-gu, Daejeon, Korea, Zip: 305-701
E-mail: a9b4s@kaist.ac.kr Web: http://fand.kaist.ac.kr
Tel: (8242) 350-3383; Fax: (8242) 350-3310
Education
Ph.D candidate in Korea Advanced Institute of Science and Technology, Feb. 2012 ~
M.S. degree in Korea Advanced Institute of Science and Technology, Mar. 2010 ~ Feb. 2012
B.S. degree in Sungkyunkwan University in Korea, Mar. 2004 ~ Feb. 2010
Experience
2/10-current: Research Assistant, Korea Advanced Institute of Science and Technology
Academic advisor: Prof. Keon Jae Lee
Flexible piezoelectric generators using removal of sacrificial substrate
Flexible Large Scale Integration (LSI) and application to bio-implantable devices
Research Interests
Fabrication of flexible semiconductor and application to flexible high performance electronics
Fabrication of flexible inorganic semiconductors for high performance flexible electronic devices
Novel device design of flexible semiconductors on large area plastic substrate
Developing novel dielectric that compatible with plastic substrate: epoxy, low temperature Plasma
enhanced chemical vapor deposition (PECVD) oxide and atomic layer deposition (ALD) oxide
Transferring large area thin films to plastic substrate using advanced transfer process
Fabrication of MOSFET and flash memory on plastic substrate
Si doping with ion implantation, solid source doping, and spin-on-dopant (SOD)
Fabrication of piezoelectric thin films and application to flexible energy harvesters
Fabrication of BaTiO3, Pb(Zr,Ti)O3, Pb(La,Zr,Ti)O3, BiFeO3 thin films using sputtering, Sol-gel
method
Fabrication of flexible piezoelectric energy harvesters
Fabrication of bio-compatible packaging
Fabrication of monolithically encapsulated liquid crystal polymers (LCPs)
Lithography
Soft lithography: transfer printing
Photolithography and silicone-based printing/molding patterning methods
Analytical equipment
Scanning electron microscopy (SEM)
X-ray diffraction (XRD)
Additive/subtractive techniques
Sputtering, E-beam evaporator, PECVD and ALD
Etching of thin films: Reactive ion etching (RIE), Inductively coupled plasma etching (ICP), wet
etching of semiconductor
Electrical property measurement
Capacitance-Voltage, Current-Voltage measurements, and radio frequency (RF) analyzer for
electrical devices
Honors and Awards
2012 The Merck Young Scientist Award for Outstanding Scientific Contribution to the Display
Technology
2012 Cover feature article for the June issue of Advanced Materials
Journal Publications
1. D. Shin, J. Mun, G. Hwang, J. Yoon, J. Kim, Y. Yang, J. Lee, J. Shin, K. Lee, S. Park, J. Kim, S.
Kim*, "Multicomponent Nanoptterns by Directed Block Copolymer Self-Assembly", ACS Nano
10.1021/nn403379k (2013)
2. K. Park, C. Jeong, J. Ryu, G. Hwang, K. Lee*, "Flexible and Large-area Nanocomposite Generator
based on Lead Zirconate Titanate Particles and Carbon Nanotubes", Advanced Energy Materials
10.1002/aenm.201300458 (2013)
3. G. Hwang, D. Im, S. Lee, J. Lee, M. Koo, S. Park, S. Kim, K. Yang, S. Kim, K. R. Lee, K. Lee*, "In
vivo Silicon-Based Flexible Radio Frequency Integrated Circuits Monolithically Encapsulated with Biocompatible Liquid Crystal Polymers" ACS Nano, 7(5), 4545, (2013)
4. K. Park, M. Lee, Y. Liu, S. Moon, G. Hwang, G. Zhu, J. E. Kim, S. O. Kim, D. K. Kim, Z. L. Wang,
K. Lee*, "Flexible Nanocomposite Generator Made of BaTiO3 Nanoparticles and Graphitic Carbons",
Advanced Materials, 24, 2999, (2012)
5. K. Park, S. Xu, Y. Liu, G. Hwang, S. J. L. Kang, Z. L. Wang, K. Lee*, "Piezoelectric BaTiO3 Thin
Film Nanogenerator on Plastic Substrates", Nano Letters, 10(12) , 4939 (2010)
Patents
1. “A manufacturing method for plastic battery device, plastic battery device manufactured by the
same”
K. Lee, M. Koo, G. Hwang
Korea 10-1231396 (Feb 2013)
2. “Manufacturing method for flexible VLSI and flexible VLSI manufactured by the same”
K. Lee, G. Hwang
Korea 10-1288197 (Jul 2013)
3. “A manufacturing method for plastic battery device, plastic battery device manufactured by the same”
K. Lee, M. Koo, G. Hwang
Korea 10-1231396 (Feb 2013)
4. “A manufacturing method for plastic piezoelectric device using sacrificial substrate, plastic
piezoelectric device manufactured by the same”
K. Lee, M. Koo, K. Park, G. Hwang
Korea 10-1203176 (Nov 2012)