• Ph. D. candidate, Major in Materials Engineering, Department of Urban, Energy, and Environmental Engineering, Chungbuk National University (2022.03 ~ present) (Advisor: Prof. Byungjin Cho) // GPA 4.50 / 4.50 (Ph. D.)

• Researcher, Multi-Functional Nanoelectronics Lab (PI: Prof. Byungjin Cho), Chungbuk National University (2021.09 ~ 2022.02) 

• Integrated B.S. - M.S., Department of Advanced Materials Engineering, Chungbuk National University (2014. 03 ~ 2021. 08) (Advisor: Prof. Byungjin Cho)

- GPA: 4.26/4.50 (B.S., summa cum laude), GPA 4.50/4.50 (M.S.)

- Thesis: HfO2/InGaZnO Double-Layered Transistor: Study on Switching and Photosynaptic Plasticity

• Super-steep slope transistor

• 2-Dimensional material-based nanoelectronics

• Oxide-based nanoelectronics

• Neuromorphic devices and integration

• ALD high-k materials

1. high-performance IGZO transistor... [In preparation]

2. IGZO/Al2O3 transistor... [In preparation]

3. low-powered switching IGZO transistor... [In preparation]

4. Ge-based capacitor... [In preparation]

5. Do Hyeong Kim#, Seyoung Oh#, Ojun Kwon, Soo-Hong Jeong, Hyun Young Seo, Eunjeong Cho, Min Jeong Kim, Wondeok Seo, Jung-Dae Kwon*, Yonghun Kim*, Woojin Park*, and Byungjin Cho*, "Designing Buried-Gate InGaZnO Transistors for High-Yield and Reliable Switching Characteristics" Journal of Materials Chemistry C 12, 15, 5259-5640 [2024.04.21] Front COVER picture article [Link]

6. Soo-Hong Jeong, Seyoung Oh, Ojun Kwon, Do Hyeong Kim, Hyun Young Seo, Woojin Park*, and Byungjin Cho*, "Reliable synaptic plasticity of InGaZnO transistor with TiO2 interlayer" Nanotechnology 35, 115202 [2023.12.29] [Link]

7. Yae Zy Kang, Hwang Hwi An, Min-Gi Jeon, So Jeong Shin, Su Jin Kim, Min Choi, Jae Baek Lee, Tae Yeon Kim, Ikhwan Nur Rahman, Hyun Young Seo, Seyoung Oh, Byungjin Cho, Jihoon Choi*, and Hyun Seok Lee*, "Increased Mobility and Reduced Hysteresis of MoS2 Field-Effect Transistors via Direct Surface Precipitation of CsPbBr3-Nanoclusters for Charge Transfer Doping" Nano Letters 23, 19, 8914-8922 (2023) [2023.09.18] [Link]

8. Seyoung Oh, Ojun Kwon, Hyun Young Seo, Do Hyeong Kim, Soo-Hong Jeong, Hyeon Ki Park, Woojin Park, and Byungjin Cho*, "Light-stimulated long-term potentiation behavior enhanced in a HfO2/InGaZnO photonic synapse" Applied Materials Today 34, 101919 (2023) [2023.09.07] [Link]

9. Minseok Kim#, Seyoung Oh#, Byungjin Cho*, Jong Hoon Joo*, "Conduction mechanism in acceptor- or donor-doped ZrO2 bulk and thin films" ACS Applied Materials & Interfaces 15, 26, 31627-31634 [2023.07.05] [Link]

10. Ja-Yun Ku, Khwang-Sun Lee, Dae-Han Jung, Dong-Hyun Wang, Seyoung Oh, Kiyoung Lee, Byungjin Cho, Hagyoul Bae*, and Jun-Young Park*, "Comprehensive study on trap-induced bias instability via high-pressure D2 and N2 annealing" IEEE Transactions on Device and Materials Reliability 23, 2, 276 (2023) [2023. 04. 27] [Link]

11. Wondeok Seo, Woojin Park, Hyun Young Seo, Seyoung Oh, Ojun Kwon, Soo Hong Jeong, Do Hyeong Kim, Min Jeong Kim, Sang Kyung Lee, Byoung Hun Lee, Byungjin Cho*, "MoS2/p-Si heterojunction with graphene interfacial layer for high performance 940 nm infrared photodetector" Applied Surface Science 604, 154485 (2022) [2022.12.01] [Link]

12. Heejeong Park#, Seyoung Oh#, Soo Hong Jeong, Ojun Kwon, Hyun Young Seo, Jung-Dae Kwon,* Yonghun Kim,* Woojin Park,* and Byungjin Cho*, "Dual-terminal stimulated heterosynaptic plasticity of IGZO memtransistor with Al2O3/TiO2 double oxide structure" ACS Applied Electronic Materials 4, 6, 2923 (2022) [2022.06.08] [Link]

13. Ojun Kwon, Seyoung Oh, Heejeong Park, Soo-Hong Jeong, Woojin Park, Byungjin Cho*, "In-depth analysis on electrical parameters of floating gate IGZO synaptic transistor affecting pattern recognition accuracy" Nanotechnology 33, 215201 (2022) [2022.02.28] [Link]

14. M. Lee, W. Park, H. Son, J. Seo, O. Kwon, S. Oh, M. G. Hahm*, U. J. Kim*, and B. Cho*, "Brain-inspired ferroelectric Si nanowire synaptic device" APL Materials 9, 031103 (2021) [2021.03.05] Front COVER picture article, Featured in Editor's Picks [Link]

15. Tae Hyeon Kim, Woojin Park, Seyoung Oh, So-Young Kim, Naohito Yamada, Hikaru Kobayashi, Hye Yeon Jang, Jae Hyeon Nam, Hiroki Habazaki, Byoung Hun Lee, Byungjin Cho*, "Unveiling the role of Al2O3 interlayer in indium gallium zinc oxide transistors" Physica Status SolidiA: Applications and Materials Science 218, 2000621 (2021) [2021.03.01] [Link]

16. Jae Hyeon Nam#, Seyoung Oh#, Hye Yeon Jang#, Ojun Kwon, Heejeong Park, Woojin Park, Jung-Dae Kwon*, Yonghun Kim* and Byungjin Cho*, "Low Power MoS2/Nb2O5 Memtransistor Device with Highly Reliable Heterosynaptic Plasticity" Advanced Functional Materials 31, 2104174 (2021) [2021.10.01] Front COVER picture article [Link]

17. Jeehoon Kim, Younghun Kim, Ojun Kwon, Taehyeon Kim, Seyoung Oh, Soeun Jin, Woojin Park, Jung-Dae Kwon, Seung-Woo Hong, Chang-Sik Lee, Ho-Yong Ryu, Seoksu Hong, Jaehoon Kim, Tae-Young Heo*, and Byungjin Cho*, "Modulation of Synaptic Plasticity Mimicked in Al Nanoparticle-Embedded-IGZO Synaptic Transistor" Advanced Electronic Materials 6, 1901072 (2020) [2020.04.14] [Link]

18. Jaeun Kim, Tae Hyeon Kim, Seyoung Oh, Jae Hyeon Nam, Hye Yeon Jang, Yonghun Kim, Naohito Yamada, Hikaru Kobayashi, So-Young Kim, Byoung Hun Lee, Hiroki Habazaki, Woojin Park*, and Byungjin Cho*, "Al2O3–induced sub-gap doping on IGZO channel for the detection of infrared light" ACS Applied Electronic Materials 2, 1478 (2020) [2020.05.04] [Link]

19. Woojin Park, Yusin Pak, Hye Yeon Jang, Jae Hyeon Nam, Tae Hyeon Kim, Seyoung Oh, Sung Mook Choi, Yonghun Kim, and Byungjin Cho*, "Improvement of the Bias Stress Stability in 2D MoS2 and WS2 Transistors with a TiO2 Interfacial Layer" Nanomaterials 9, 1155 (2019) [2019. 08.12] [Link]

20. Seyoung Oh, Seung Won Lee, Dongjun Kim, Jeong-Hun Choi, Hong-Chul Chae, Sung Mook Choi, Ji-Hoon Ahn* and Byungjin Cho*, "Low power switching characteristics of CNT field effect transistor device with Al-doped ZrHfO2 gate dielectric" Journal of Nanomaterials, 2018, Article ID 2156895, 7 pages (2018) [2018.10.08] [Link]

1. 서현영, 박우진, 오세영, 권오준, 조병진 "2차원 전이금속계 금속성 게이트 전극을 포함한 트랜지스터 및 이의 제조 방법" 출원번호(대한민국): 10-2024-0031227 (2024.03.05)

2. 정수홍, 오세영, 서현영, 김도형, 박우진, 권오준, 조병진 "시냅스 소자 및 이의 제조 방법" 출원번호(대한민국): 10-2022-0087619 (2022.07.15)

3. 조병진, 오세영, 박우진, 권오준, 박희정 "산화물 이중 층 기반의 광 시냅스 소자 및 이의 제조방법" 출원번호(대한민국): 10-2021-0185109 (2021.12.22) 등록번호(대한민국): 10-2658687 (2024.04.15)

4. 박희정, 오세영, 서현영, 박우진, 권오준, 정수홍, 조병진 "산화물 이중 층 기반 IGZO 멤트랜지스터 및 이의 제조방법" 출원번호(대한민국): 10-2021-0098576 (2021.07.27)

5. 박우진, 서원덕, 오세영, 서현영, 박희정, 조병진 "포토 다이오드" 출원번호(대한민국): 10-2021-0066923 (2021.05.25) 등록번호(대한민국): 10-2584653 (2023. 09. 26)

6. 남재현, 장혜연, 오세영, 점승기, 박우진, 신언길, 조병진 "플라즈마 표면 처리를 통한 산소차단성이 증대된 이차전지 파우치용 알루미늄 합금, 및 이를 포함하는 파우치형 이차전지" 출원번호(대한민국): 10-2020-0095673 (2020.07.31)

7. 남재현, 장혜연, 조병진, 오세영, "시냅스 소자 및 이의 제조 방법" 출원번호(대한민국): 10-2020-0059197 (2020.05.18) 등록번호(대한민국): 10-2321010 (2021. 10. 28)

8. 남재현, 장혜연, 오세영, 점승기, 박우진, 신언길, 조병진, "산소차단성이 증대된 이차전지용 포장재, 이의 표면처리방 법, 및 이를 포함하는 파우치형 이차전지" 출원번호(대한민국): 10-2020-0051948 (2020.04.29) 등록번호(대한민국): 10-2382567 (2022. 3. 30)

9. 김자은, 박우진, 김태현, 오세영, 김용훈, 조병진, "박막 트랜지스터 광 센서 및 이의 제조방법", 출원번호(대한민국): 10-2020-0002627 (2020.01.08) 등록번호(대한민국): 10-2395180 (2022. 05. 02)

1. Seyoung Oh, Byungjin Cho*, "HfO2/InGaZnO Double-Layered Transistor with Low-Powered Switching Enabled by Quasi-Two-Dimensional Electron Channel", The 31th Korean Conference on Semiconductors, Gyeongju, Korea, Jan 24~26, 2024 [poster presentation]

2. Seyoung Oh, Byungjin Cho*, "Low-Powered Switching of HfO2/InGaZnO Double-Layered Transistor with Two-Dimensional Electron Channel", The 21st International Nanotech Symposium & Exhibition (NANO KOREA 2023), Ilsan, Korea, July 5~7 [poster presentation]

3. Eunjeong Cho, Minjeong Kim, Seyoung Oh, Byungjin Cho*, "Implementation of Reliable Memcapacitor Synaptic Device via Ge/high-k Interface Plasma Treatment", The 30th Korean Conference on Semiconductors, Gangwon, Korea, Feb 13~15, 2023 [poster presentation] [Best Poster Award]

4. Seyoung Oh, Byungjin Cho*, "Ultralow-Power Transistor with Super-Steep Slope Switching via Graphene-based Contact Engineering", The 30th Korean Conference on Semiconductors, Gangwon, Korea, Feb 13~15, 2023 [poster presentation]

5. Seyoung Oh, Byungjin Cho*, "Extraordinary Switching Characteristics of Two-Dimensional Electron Channel Confined in a HfO2/InGaZnO Interface", 2022 Fall Meeting of the Korean Ceramic Society, COEX, Korea, October 26~28, 2022 [poster presentation] [Best Poster Award]

6. Seyoung Oh, Byungjin Cho*, "InGaZnO Field Effect Transistor with Two-Dimensional Electron Channel Enabled by HfO2 Passivation", KPS 70th Anniversary and 2022 Fall Meeting, BEXCO, Korea, October 19~21, 2022 [poster presentation] [Best Poster Award]

7. Seyoung Oh, Byungjin Cho*, "Light-stimulated long-term potentiation behavior enabled by HfO2/InGaZnO synaptic structure" Nano Korea 2022, KINTEX, Korea,  July 6~8, 2022 [oral presentation]

8. Seyoung Oh, Byungjin Cho*, "Effect of HfO2 Passivation Layer on Photosynaptic Functionality of InGaZnO Synaptic Device" The 29th Korean Conference On Semiconductors, Gangwon, Korea, Jan 24~26, 2022 [oral presentation]

9. Seyoung Oh,  Byungjin Cho*, "MoS2/Nb2O5 Memtransister with Highly Reliable Heterosynaptic Plasticity" Nano Convergence Conference 2022, Gwangju, Korea, Jan 18~19, 2022 [oral presentation]

10. Seyoung Oh,  Byungjin Cho*, "Optoelectronic Synapse Device based on HfO2/InGaZnO Double-layered Structure for Brain-inspired Neuromorphic System" 2021 MRS KOREA, Gyeongju, Korea, Nov 24~26, 2021 [poster presentation]

11. Seyoung Oh, Jae Hyeon Nam, Heejeong Park, Byungjin Cho*, "Highly Reliable Heterosynaptic Plasticity of Low Power MoS2/Nb2O5 Memtransistor" 6th International Conference on Advanced Electromaterials (ICAE 2021), Jeju, Korea, Nov 9~12, 2021 [poster presentation] [Best Poster Award]

12. Wondeok Seo, Woojin Park, Seyoung Oh, Byungjin Cho*, "Performance Enhancement of MoS2/p-Si Infrared Photodetector via the Introduction of Graphene Layer " 6th International Conference on Advanced Electromaterials (ICAE 2021), Jeju, Korea, Nov 9~12, 2021 [poster presentation]

13. Woojin Park,  Moonsang lee, Ojun Kwon, Se Young Oh, Myung Gwan Hahm, Byungjin Cho*, "Demonstration of PVDF-TrFE/Si ferroelectric synapse device" The 19th International Nanotech Symposium & Exhibition (NANO KOREA 2021), KINTEX, Korea, July 7~9, 2021 [oral presentation]

14. Seyoung Oh,  Byungjin Cho*, "HfO2/InGaZnO Photonic Synapse Device for Brain-inspired Photo-neuromorphic System" The 19th International Nanotech Symposium & Exhibition (NANO KOREA 2021), KINTEX, Korea, July 7~9, 2021 [poster presentation]

15. Seyoung Oh, Woojin Park, Heejeong Park, Hyun Young Seo and Byungjin Cho*, "Bias stability enhancement of a sol-gel based IGZO transistor via plasma treatment onto high-k dielectric" The 28th Korean Conference on Semiconductors, On-line conference, Korea, Jan 25~29, 2021 [poster presentation]

16. Woojin Park, Moonsang Lee, Myung Gwan Hahm, Ojun Kwon, Seyoung Oh, Byungjin Cho*, "PVDF-TrFE/Si NW synaptic device" The 28th Korean Conference on Semiconductors, On-line conference, Korea, Jan 25~29, 2021 [poster presentation]

17. Ojun Kwon, Jeehoon Kim, Tae Hyeon Kim, Se Young Oh, Byungjin Cho*, "Precise modulation of synaptic plasticity implemented in IGZO:Al NPs synaptic transistor"  The 28th Korean Conference on Semiconductors, On-line conference, Korea, Jan 25~29, 2021 [poster presentation] [Best Poster Award]

18. Woojin Park, Seyoung Oh, Ojun Kwon, Byungjin Cho*, "Contact engineering and performance improvement of TMD and IGZO FETs" 2020 MRS Korea, Jeju, Korea, Nov. 19, 2020. [orial presentation]

19. Seyoung Oh, Woojin Park, Heejung Park, Byungjin Cho*, "Electrical properties of a sol-gel based IGZO transistor integrated with plasma treated Al2O3 dielectric" 2020 MRS Korea, Jeju, Korea, Nov. 18, 2020. [poster presentation]

20. Ojun Kwon, Jeehoon Kim, Tae Hyeon Kim, Se Young Oh, and Byungjin Cho*, "Accurate modulation of synaptic plasticity implemented in IGZO:Al NPs synaptic transistor" ISOCC 2020, Sono Calm Yeosu Hotel, Yeosu, Oct. 23 2020. [poster presentation]

21. Seyoung Oh and Byungjin Cho*, "Influence of Plasma Treated Al2O3 Dielectric on Sol-gel IGZO Transistor Performance" The 27th Korean Conference on Semiconductors, Highone Resort, Feb. 14, 2020 [poster presentation]

22. Ojun Kwon, Jeehoon Kim, Tae Hyeon Kim, Se Young Oh, Byungjin Cho*, "IGZO:Al NPs Synaptic Transistor Enabling Precise Modulation of Synaptic Plasticity" The 27th Korean Conference on Semiconductors, Highone Resort, Feb. 13, 2020 [poster presentation]

23. Ojun Kwon, Jeehoon Kim, Tae Hyeon Kim, Se Young Oh, Byungjin Cho*, "IGZO:Al NPs synapse transistor for precise modulation of synaptic plasticity" Nano Convergence Conference 2020, Ellisian Kangchon, Chuncheon, Jan 16, 2020 [oral presentation]

24. Seyoung Oh, Byungjin Cho*, "Low-powered Switching Characteristics of SWCNTs Transistor Integrated with Al-ZrHfO2 Dielectric for a Nonvolatile Memory" 3rd International Symposium on Anodizing Science and Technology 2019, Awaji Yumebutai Internation Conference Center, Awaji, Japan, June 4, 2019 [poster presentation] [Best Poster Award]

25. Seyoung Oh, Byungjin Cho*, "Low-powered Memory Characteristics of SWCNTs transistor integrated with Al doped HfZrO2 dielectric" E-MRS Spring Meeting 2019, Acropolis Congress Centre, Nice, France, May 29, 2019 [poster presentation]

26. Seyoung Oh, Dongjun Kim, Byungjin Cho*, "CNT 채널과 High-k 유전체 기반의 저전력 시냅스터" KIEEME annual summer conference 2018, Daemyung Delpino Resort, Kangwon Goseong, June 21, 2018 [poster presentation] [제2회 재료사진공모전 대상 수상]

27. Seyoung Oh, Byungjin Cho*, "Superior chemical sensing property of Nb-doped MoSe2 2D-layered nanomaterials" 2018 MRS Korea, Samcheok, Korea, May. 17, 2018 [poster presentation]

• Scholarship supported by the Korean government (2018 ~ 2019)

• A special auditor of the Institute for the Advancement of Higher Education, Hokkaido University (2019.07)

• Brain korea 21 CBSTAR Jr. Fellowship, Chungbuk National University (2021)

• Brain korea 21 CBSTAR Jr. Hall of fame (M.S.), Chungbuk National University (2021)

• Award in CBNU Megacity X-crops contest (team leader, with Eunjeong Cho and Minjeong Kim), Chungbuk National University (2022)

• Award in HCS Megacity X-crops contest (team leader, with Eunjeong Cho and Minjeong Kim), Hannam University (2022)

• 1st prize winner in Ig nobel prize competition, (team leader, with Soo Hong Jeong, Hyun Young Seo, Ojun Kwon, and Do Hyeong Kim), Chungbuk National University (2022) (Selected Idea: Implementation of neuromorphic devices using biologically diverse neural networks for understanding electrical characteristics of the networks and suggestion of personalized neuromorphic system)

• 1st prize winner in 4th summer BK21 convergence festival and conferences, Chungbuk National University (2023)

• Award in 2nd CBNU Megacity X-crops contest (as team leader), Chungbuk National University (2023)

• Award in 2nd HCS Megacity X-crops contest (as team leader), Hannam University (2023)

• Brain korea 21 CBSTAR Jr. Hall of fame (Ph.D.), Chungbuk National University (2024)