Park, Wookjin

Ph.D 2010-2015

Current affiliation
2016 - , KAUST, Post doctoral fellow

since 2010 :   Ph.D, Dept. of MSE, GIST

2008 – 2010 :   M.S., Dept. of MSE, GIST

2002 – 2008 :   B.S., Dept. of MSE, Sungkyunkwan University

Research Interest

Electrical characterization method for semiconductor devices

Fabrication and analysis for ZnO nanowire and Molybdenum Disulfide devices



26 T.H.Kim, W.J.Park, S.Y. Oh, S.Y. Kim, N. Yamata, H. Kobayashi, H.Y. Jang, J.H. Nam, H. Habazaki, B.H. Lee, B.J. Cho, "Unveiling the role of Al2O3 interlayer in indium gallium zinc oxide transistors," In press, Physica Status Solidi A, (2021).

25 J.E. Kim, T.H. Kim, S.Y. Oh, J.H. Nam, H.Y. Jang, Y.H. Kim, N. Yamada, H. Kobayashi, S.Y. Kim, B.H.Lee, H. Habazaki, W.J. Park, B.J. Cho, "Al2O3 induced sub-gap doping on IGZO channel for the detection of infrared light," In press, ACS Applied Electronic Materials (2020)

24 S.C. Kang, S.M. Kim, U.J. Jung, Y.H. Kim, W.J. Park, B.H. Lee*, "Interface state degradation during AC Positive Bias Temperature Instability Stress,”  Solid State Electronics 158, pp.46-50(2019).

23 S.K. Lee, Y.J. Kim, S. Heo, W. Park, T.J. Yoo, C. Cho, H.J. Hwang, and B.H. Lee*, " Advantages of a buried-gate structure for graphene field-effect transistor ,” Semiconductor Science and Technology 34, p.055010 (2019).

22 W.J.Park, S.F.Shaikh, J.W.Min, S.K.Lee, B.H.Lee, M.M. Hussain, “ Contact Resistance Reduction of ZnO Thin Film Transistors (TFTs) with Saw-Shaped Electrode,” Nanotechnology, 29, p.325202 (2018).

21 Y.J.Kim, W.J.Park, J.H.Yang, Y.H. Kim, B.H.Lee*, "Contact resistance reduction of WS2 MOSFETs with Ti contact contact using high-pressure hydrogen annealing," IEEE J. Elect. Dev. Soc. 6(1), p. 164-168 (2017).

20 J.S.Song, M.G.Lee, H.W.Heong, S.H.Seo, J.A.Yoo, T.L.Kim, J.M.Lee, H.S.No, D.H.Kim, S.Y.Heong, H.J.An, B.H.Lee, C.W.Bark, H.W.Park, H.W.Jang, S.H.Lee, “Template-engineered epitaxial BiVO4 photoanodes for efficient solar water splitting," J. Mat.Chem.A 5(35), pp. 18831-18838 (2017).

19 B.J.Co, A.R.Kim, D.J.Kim,  H.S.Chung,S.Y.Choi, J.D. Kwon, S.W.Park, Y.H.Kim,  B.H.Lee, K.H.Lee, D.H.Kim, J.W.Nam, M.G.Hahm, “Two-Dimensional Atomic-Layered Alloy Junctions for High-Performance Wearable Chemical Sensor," ACS Applied Materials and Interfaces 8, p.19635-19632 (2016).

18 Y.H.Kim, W.J.Park, J.H. Yang, C Cho, S.K.Lee, B.H.Lee*, "Reduction of Low Frequency Noise at Multilayer MoS2 FETs using a Fermi Level De-pinning Layer," on-line published, Physica Status Solidi-RRL (2016).

17 A.R.Kim, Y.H.Kim, J.W.Nam, H.S. Chung, D.J.Kim, J.D.Kwon, S.W.Park, J.C.Park, S.Y.Choi, B.H.Lee, J.H.Park,K.H.Lee, D.H.Kim, S.M.Choi,A. Pulickel, M.G.Hahm, B.J.Cho, “ Alloyed 2D metal-semiconductor atomic layer junctions ," Nano Letters  16(3). pp.1890 (2016).

16 W.J.Park, Y.H.Kim, U.J. Jung,  J.H.Yang, C. Cho, Y.J.Kim, S.M.N Hasan, H.G.Kim, H.B.R.Lee, B.H.Lee*, “Unipolar WS2 Field Effect Transistors using Fermi level de-pinning contact metals," Advanced Electronic Materials, p.1500279 (2015).

15 S. H. Lee, W. Park, B. H. Lee and W. B. Kim, "Patterned Catalyst Arrays of Pd/SnO2 Core-Shell Nanowires for Electrooxidation of Biomass-Derived Alcohols", J. Mater. Chem. A 3, 13492-13499 (2015).

14 C.Cho, S.K.Lee, J.Noh, W.Park  S.C.Lee, Y.G.Lee, H.J.Hwang, M.Ham, B.H.Lee*, "Contact resistance improvement by the modulation of area to peripheral length ratio of graphene contact pattern," Applied Physics Letters, 106(21), p.213107 (2015).

13 Y.H. Kim, Y.G. Lee, U. Jung, J.J. Kim, M.H. Choe, K.T. Lee, S.W. Pae, J.W. Park, B.H.Lee*, "Extraction of Effective Mobility from nMOSFETs with Leaky Gate Dielectric using Time Domain Reflectometry,"  IEEE Trans. Elect. Dev., 62(4), P.1092 (2015).

12 Y.H.Kim, S.H.Baek, C.H.Jeon, Y.G.Lee, J.J.Kim, U.J.Jung, S.C.Kang, W.Park, S.H.Lee, B.H.Lee*, " Leakage current limit of time domain reflectometry in ultra-thin dielectric characterization", Jpn. J. of Appl. Phys. 53, 08LC02, (2014). (Special Issue)

11 C.G. Kang, S.K.Lee, T.J. Yoo, W. Park, U. Jung, J. Ahn, B.H. Lee*, “Highly Sensitive Wide Bandwidth Photodetectors using Chemical Vapor Deposited Graphene,” Appl. Phys. Lett. 104, 161902 (2014).

10 M.H. Choe, B.H.Lee, W.J. Park, J.W.Kang, S.H. Jeong , K.J. Cho , W.-K. Hong , B.H.Lee, K.H.Lee. S.J.Park. T.H.Lee, "Characteristics of light-induced electron transport from P3HT to ZnO-nanowire field-effect transistors," Appl. Phys. Lett. 103, 223305 (2013).

9 W.Park, J.H.Yang, C.G.Kang, Y.G.Lee, H.J.Hwang, C.Cho, S.K.Lim, S.C.Kang, W.-K Hong, S.K.Lee, S.Lee, and B.H.Lee*, "Characteristics of pressure sensitive touch sensor using piezoelectric PVDF-TrFE/MoS2 stack,” Nanotechnology, 24, 475501 (2013).

8 H.J. Hwang, J.H.Yang, Y.G.Lee, C.Cho, C.G.Kang, S.C.Kang, W.Park, and B.H.Lee*, “Ferroelectric Polymer Gated Graphene Memory with Very High Speed Conductivity Modulation,” Nanotechnology, 24, on-line published (2013). Also selected as a paper of particular interest.

7 J.W.Yoon, W.Park, G.Y.Bae, Y.H.Kim, H.S.Jang, Y.J. Hyung, S.K.Lim, Y.H.Kahng, W.K.Hong, B.H.Lee, H.C.Ko , "Highly Flexible and Transparent Multilayer MoS2 Transistors with Graphene Electrodes”, Small, 9(19), p.3295 (2013).

6 M. Choe, W. Park, J.W.Kang, S.H. Jeong, W.K.Hong, B.H. Lee, S.J.Park, T.Lee, "Investigation of threshold voltage instability induced by gate bias stress in ZnO nanowire field effect transistors", Nanotechnology, 23, 485201 (2012).

5 M.H. Choe, C.-Y. Cho, J.-P. Shim, W.J. Park, S.K. Lim, W.-K. Hong, B.H. Lee, D.S. Lee, S.J. Park, and T. Lee, "Au Nanoparticle-decorated graphene electrodes for GaN-based optoelectronic devices", Appl. Phys. Lett. 101, p.031115, Jul. (2012)

4 S.C. Lee, G.Jo, S.J. Jang, W.Park, Y.H.Kahng, D.Y.Kim, B.H.Lee, T.H.Lee, "Characterization on Improved Effective Mobility of Pentacene Organic Field-Effect Transistors Using Graphene Electrodes", Jpn. J. Appl. Phys. 51, p.02BK09 , Feb. (2012)

3 S.C.Lee, S.J.Kang, G.H.Jo, M.H.Cho, W.J.Park, J.W.Woon, T.H.Kwon, Y.H.Kahng, D.Y.Kim, B.H.Lee, T.Lee "Enhanced charactteristics of pentacene field-effect transistors with graphene electrodes and substrate treatments," Appl. Phys. Lett. 99, 083306, Aug. 2011.

2 Y. H. Kahng, S.C. Lee, M. Choe, G. Jo, W.J. Park, J.W. Yoon, W.-K. Hong, C. Cho, B.H. Lee, and T. Lee, "A study of graphene films synthesized on nickel substrates: existence and origin of small-base-area peaks", Nanotechnology, 22, 045706, Jan. 2011.

1 M.H. Choe, G.H. Jo, J.S. Maeng, W.-K. Hong, M.S. Jo, G.U. Wang, W.J. Park, B.H. Lee, H. Hwang, and T. Lee, “Electrical properties of ZnO nanowire field effect transistors with varying high-k Al2O3 dielectric thickness," J. Appl. Phys., 107(3), AN. 034504, Feb. 2010.


국내 17 김윤지, 김소영, 정욱진, 박우진, 이상경, 이병훈, "고압수소열처리 조건에 따른 그래핀 전계효과소자의 특성 최적화", 23rd Korean Conference on Semiconductors(KCS), 2016

국내 16 강수철, 김용훈, 정욱진, 박우진, 김승모, 이병훈, "FinFET의 Bipolar AC Stress에 의한 Reliability 특성", 23rd Korean Conference on Semiconductors(KCS), 2016, Best poster award.

국제 15 H.J. Hwang, W.B. You, K.E. Chang, C.H Shim, C. Cho, J.H. Yang, Y.J. Kim, S.K. Lim, W.Park, and B.H. Lee, "Graphene barristor with nitrogen doped ZnO for high on/off ratio and wide barrier height modulation", SISC, (2015)

국내 14 박우진, 김윤지, 이병훈, “고압 수소 열처리를 이용한 WS2 전계 효과 트랜지스터의 성능 개선",  Electronic Materials and Nanotechnology for Green Environment (ENGE), (2015)

국제 13

H.J. Hwang, K.E. Chang, W.B. You, C.H Shim, S.K. Lee, J.H. Yang, C. Cho, S.K. Lim, W. Park, J. Kim, B.H. Lee, "Barrier height modulation at Graphene-ZnO contact using nitrogen doping", Nano Korea, (2015)

국내 12 유원범, 장경은, 박우진, 심창후, 양진호, 황현준, 김현구, 이한보람, 이병훈, "그래핀과 실리콘의 접합계면에 TiO2 interlayer를 적용한 barristor소자의 전기적 특성 평가",  Materials Research Society of Korea(MRS-K), 2015, Best poster award.

국내 11 박우진, 김용훈, 이상경, 정욱진, 양진호, 조천흠, 김윤지, 임성관, 이병훈, “MoS2 전계효과 트랜지스터의 컨택 저항 개선 방법”, 22nd Korean Conference on Semiconductors(KCS), 2015

국내 10 강수철, 이영곤, 김용훈, 정욱진, 박우진, 김윤지, 이병훈, “FinFET의 AC Stress Reliability 특성”, 22nd Korean Conference on Semiconductors(KCS), 2015

국제 9 W.J.Park, Y.H.Kim, S.K.Lee, U.Jung, J.H.Yang, C.Cho, Y.J.Kim, S.K.Lim, I.S. Hwang, H.B.R.Lee, and B.H.Lee, “Contact Resistance Reduction using Fermi Level De-pinning Layer for MoS2 FETs”, Tech. Dig of IEDM, (2014).

국제 8 W.J.Park, Y.H.Kim, S.K.Lee, U.Jung, J.H.Yang, C.Cho, Y.J.Kim, S.K.Lim, and B.H.Lee, “Contact Resistance Reduction for MoS2 FETs with Insulating Layers”, 44th IEEE Semiconductor Interface Specilaists Conference (SISC), (2014).

국제 7 C.Cho, S.K.Lee, S.Lee, Y.G.Lee, W.Park, J.Noh, H.J.Hwang, B.H.Lee, “Contact Resistance Modulation using Area to Peripheral Ratio of Graphene Contact", Int. Conf. on Electronic Materials and Nanotechnology for Green Environment (ENGE), (2014).

국제 6 J.H.Yang, H.J.Hwang, S.C.Kang, W.Park, B.H.Lee, “Stable conductivity modulation of graphene using graphene/Al2O3/metal/piezoelectric polymer/metal stack", Nano Korea, (2014).

국제 5 C.G.Kang, S.H.Choe, S.K.Lee, U.Jung, W.Park, Y.G.Lee, T.J.Yoo, and B.H.Lee, “Highly sensitive Al2O3 passivated CVD graphene photodetectors for UV to IR region”, Int. Workshop on Dielectric Thin Films. (IWDTF) , (2013).

국제 4 J.H. Yang, H.J. Hwang, W.J. Park, S.C. Kang, B.H. Lee, “The modulation of graphene conductivity using piezoelectric polymer and its application to touch devices”, 2013 Joint Symposium on MSE for 21C, 2013

국제 3 W.J. Park, Y.G. Lee, J.J. Kim, S.K. Lee, C.G. Kang, C. Cho, S.K. Lim, U. Jung, W.K. Hong, and B.H.Lee, “Reliability Characteristics of MoS2 FETs”, Int. Conf. on Solid State Device and Materials(SSDM), (2013)

국제 2 B.H. Lee, H.J.Hwang, J.H.Yang, S.C.Kang, W.J.Park, “Electronic Applications of Graphene/PVDF-TrFE stack”, UKC, (2013), invited.

국내 1 박우진, 양진호, 강창구, 조천흠, 이상철, 임성관, 김용훈, 이상경, 강수철, 홍웅기, 이병훈 "Study of touch sensing characteristics in PVDF-TrFE/MoS2 field-effect transistors", presented at 20th Korean Conference on Semiconductors(KCS), 2013.

Other Expertise

Technical Skills

Metal oxide nanowires and grapheme films grown by CVD

Semiconductor integration process

Device characterization

Course Work


Electronic Properties of Materials

Semiconductor Processing

Advanced Thermodynamics

Solid State Physics

Semiconductor Device Physics


Lithography Process

Advanced Electrical Characterization Methods for Nano Scale Devices

Thin Film Technology

Ph. D

Device physics for nanoscale solid state devices


Organic Materials for Electronics and Photonics II

Energy Conversion Chemistry

Characterization of dielectric thin films