Publication

https://scholar.google.com/citations?hl=ko&user=9d4_A3kAAAAJ&view_op=list_works

2025

Je-Jun Lee#, Seong-Jun Han#, Changsoon Choi, Chaewon Seo, Seungkwon Hwang, Jihyun Kim, Jung Pyo Hong, Jisu Jang, Jihoon Kyhm, Jung Woo Kim, Byoung-Soo Yu, Jung Ah Lim, Gunuk Wang, Joohoon Kang, Yonghun Kim, Suk-kyun Ahn*, Jongtae Ahn*, Do Kyung Hwang*

“Polarization-sensitive in-sensor computing in chiral organic integrated 2D pn heterostructures for mixed-multimodal image processing”

Nature Communications, 16 (1), 1 (2025)

Jongtae Ahn#, Eungseon Yeon#, Do Kyung Hwang*

“Recent Progress in 2D Heterostructures for High‐Performance Photodetectors and Their Applications”

Advanced Optical Materials, 13 (13), 2403412 (2025)

Jisu Jang#, Jung Pyo Hong#, Sang-Jun Kim#, Jongtae Ahn, Byoung-Soo Yu, Jaewon Han, Kihyun Lee, Aelim Ha, Eunki Yoon, Wonsik Kim, Suyeon Jo, Hyun Woo Ko, Seon Kyu Yoon, Takashi Taniguchi, Kenji Watanabe, Hogil Baek, Dae-Yeon Kim, Kimoon Lee, Sungchul Mun, Kyu Hyoung Lee, Soohyung Park, Kwanpyo Kim, Young Jae Song, Seung Ah Lee, Hyunwoo J Kim, Jae Won Shim, Gunuk Wang, Ji-Hoon Kang, Min-Chul Park*, Do Kyung Hwang*

“Conductive-bridge interlayer contacts for two-dimensional optoelectronic devices”

Nature Electronics, 1 (2025)

Hyojin Seung#, Jinsol Bok#, Ji Su Kim#, Jihoon Kim, Hyeonseung Choi, Jongtae Ahn, Jung Pyo Hong, Eunki Yoon, Sylke Blumstengel, Young Yong Kim, Luciano Colazzo, Soohyung Park, Do Kyung Hwang, Jungwon Park, Changsoon Choi*, Taeghwan Hyeon*, Dae-Hyeong Kim*

“Covalent heterostructures of ultrathin amorphous carbon nitride and Si for high-performance vertical photodiodes”

Nature Synthesis, 1 (2025)

2024

Jongtae Ahn#*

“High Performance MoTe2/SnSe2 Heterostructure Photodiode for Near-Infrared Photodetection”

Applied Science and Convergence Technology, 33 (96), 164 (2024)

Byoung‐Soo Yu#, Wonsik Kim#, Jisu Jang, Je‐Jun Lee, Jung Pyo Hong, Namhee Kwon, Seunghwan Kim, Aelim Ha, Hong‐Kyu Kim, Jae‐Pyoung Ahn, Kwangsik Jeong, Takashi Taniguchi, Kenji Watanabe, Gunuk Wang, Jongtae Ahn*, Soohyung Park*, Do Kyung Hwang*

“Reversible Polarity Control in 2D MoTe2 Field‐Effect Transistors for Complementary Logic Gate Applications”

Advanced Functional Materials, 34 (41), 2404129

Seungho Song#, Changsoon Choi#, Jongtae Ahn, Je‐Jun Lee, Jisu Jang, Byoung‐Soo Yu, Jung Pyo Hong, Yong‐Sang Ryu, Yong‐Hoon Kim*, Do Kyung Hwang*

“Artificial optoelectronic synapse based on spatiotemporal irradiation to source‐sharing circuitry of synaptic phototransistors”

InfoMat, 6 (2), e12479 (2024)

Tae Hyuk Kim#, Byoung‐Soo Yu#, Hyun Woo Ko#, Na Won Park, Muhammad Ahsan Saeed, Jongtae Ahn, Suyeon Jo, Dae‐Yeon Kim, Seon Kyu Yoon, Kwang‐Hoon Lee, Sang Young Jeong, Han Young Woo, Hyunwoo J Kim, Tae Geun Kim, JaeHong Park, Min‐Chul Park*, Do Kyung Hwang*, Jae Won Shim*

“Self‐powering sensory device with multi‐spectrum image realization for smart indoor environments”

Advanced Materials, 36 (2), 2307523 (2024)

2023

Hyun‐Soo Ra#, Tae Wook Kim#, Derrick Allan Taylor#, Je‐Jun Lee, Seungho Song, Jongtae Ahn, Jisu Jang, Takashi Taniguchi, Kenji Watanabe, Jae Won Shim, Jong‐Soo Lee*, Do Kyung Hwang*

“Probing Optical Multi‐Level Memory Effects in Single Core‐Shell Quantum Dots and Application Through 2D–0D Hybrid Inverters”

Advanced Materials, 35(39), 2303664 (2023)

Hanna Lee#, Jun Ho Hwang, Seung Ho Song, Hyemi Han, Seo‐Jung Han, Bong Lim Suh, Kahyun Hur, Jihoon Kyhm, Jongtae Ahn, Jeong Ho Cho, Do Kyung Hwang, Eunji Lee*, Changsoon Choi*, Jung Ah Lim*

“Chiroptical Synaptic Heterojunction Phototransistors Based on Self‐Assembled Nanohelix of π‐Conjugated Molecules for Direct Noise‐Reduced Detection of Circularly Polarized Light”

Advanced Science, 10 (27), 2304039 (2023)

Eunsung Park#, Doyoon Eom, Myeong-Hun Yu, Yun-Mi Moon, Dae-Hwan Ahn, Jongtae Ahn, Do Kyung Hwang, Woo-Young Choi, Myung-Jae Lee*

“Back-Illuminated Double-Avalanche-Region Single-Photon Avalanche Diode”

IEEE Journal of Selected Topics in Quantum Electronics, 30 (10), 1 (2023)

Yeonsu Jeong#, Taewook Kim, Hyunmin Cho, Jongtae Ahn, Sungjae Hong, Do Kyung Hwang, Seongil Im*

“Negative Photoresponse Switching via Electron–Hole Recombination at The Type III Junction of MoTe2 Channel/SnS2 Top Layer”

Advanced Materials, 35 (48), 2304599 (2023)

Hyemi Han#, Jong Ho Choi, Jongtae Ahn, Hanna Lee, Changsoon Choi, Wookjin Jung, Jihyeon Yeom, Do Kyung Hwang, Bong June Sung*, Jung Ah Lim*

“Chiral Diketopyrrolopyrrole-Based Conjugated Polymers with Intramolecular Rotation–Isomeric Conformation Asymmetry for Near-Infrared Circularly Polarized Light-Sensing Organic Phototransistors”

ACS Applied Materials & Interfaces 15 (49), 57447 (2023)

2022

Sergey G Menabde, Junghoon Jahng, Sergejs Boroviks, Jongtae Ahn, Jacob T Heiden, Do Kyung Hwang, Eun Sung Lee, N Asger Mortensen, Min Seok Jang

“Low‐Loss Anisotropic Image Polaritons in van der Waals Crystal α‐MoO3”

Advanced Optical Materials, 10 (21), 2201492 (2022)

Sergey G Menabde, Sergejs Boroviks, Jongtae Ahn, Jacob T Heiden, Kenji Watanabe, Takashi Taniguchi, Tony Low, Do Kyung Hwang, N Asger Mortensen, Min Seok Jang*

“Near-field probing of image phonon-polaritons in hexagonal boron nitride on gold crystals”

Science Advances 8 (28), 0627 (2022).

Sehwan Chang, Junyoung Jin, Jihoon Kyhm, Tae Hwan Park, Jongtae Ahn, Sung-Yul L Park, Suk In Park, Do Kyung Hwang, Sang Soo Choi, Tae-Yeon Seong, Jin-Dong Song, Gyu Weon Hwang

“SWIR imaging using PbS QD photodiode array sensors”

Optics Express 20 (12), 20659 (2022)

Jisu Jang, Hyun-Soo Ra, Jongtae Ahn, Tae Wook Kim, Seung Ho Song, Soohyung Park, Takashi Taniguchi, Kenji Watanabe, Kimoon Lee, Do Kyung Hwang*

“Fermi-level pinning-free WSe2 transistors via 2D van der Waals metal contacts and their complementary logic gate circuits”

Advanced Materials, 34 (41), 2109899 (2022)

Sungwon Choi#, Jongtae Ahn#, Il-Ho Ahn, Do Kyung Hwang*, Min-Chul Park*

“Integral imaging using a MoS2 Schottky diode”

Optics Letters 47 (4), 866, (2022)

Min-Hye Jeong, Hyun-Soo Ra, Sang-Hyeon Lee, Do-Hyun Kwak, Jongtae Ahn, Won Seok Yun, JaeDong Lee, Weon-Sik Chae, Do Kyung Hwang* and Jong-Soo Lee*

“Multilayer WSe2/MoS2 heterojunction phototransistors through periodically arrayed nanopore structures for bandgap engineering”

Advanced Materials, 34 (8), 2108412 (2022)

Hyun-Soo Ra#, Jongtae Ahn#, Jisu Jang#, Tae Wook Kim, Min-Hye Jeong, Sang-Hyun Lee, Taegeun Yoon, Seungsoo Kim, Takashi Taniguch, Kenji Watanabe, Young Jae Song,

Jong-Soo Lee*, and Do Kyung Hwang*

“Asymmetry Field Effect Phototransistor to overcome High Exciton Binding Energy of 2D TMDCs Materials”

Advanced Materials, 34 (7), 2107468 (2022)

2021

Jongtae Ahn#, Kyul Ko#, Jihoon Kyhm#, Hyun-Soo Ra, Heesun Bae, Sungjae Hong, Dae-Yeon Kim, Jisu Jang, Tae Wook Kim, Ji-Hoon Kang, Namhee Kwon, Soohyung Park,

Byeong-Kwon Ju, Ting-Chung Poon, Min-Chul Park*, Seongil Im*, and Do Kyung Hwang*

“Near-infrared self-powered linearly polarized photodetection and digital incoherent holography using WSe2/ReSe2 van der Waals heterostructure”

ACS Nano, 15 (11), 17917 (2021)

Wonjun Choi#, Jongtae Ahn#,

Ki-Tae Kim, Hye-Jin Jin, Sungjae Hong, Do Kyung Hwang* and Seongil Im*

“Ambipolar Channel p-TMD/n-Ga2O3 Junction Field Effect Transistors and High Speed Photo-sensing in TMD Channel”

Advanced Materials, 33 (38), 2103079 (2021)

Jongtae Ahn#, Jihoon Kyhm#,

Hee Kyoung Kang, Namhee Kwon, Soohyung Park, and Do Kyung Hwang*

“2D MoTe2/ReS2 van der Waals heterostructure for high-performance and linear polarization-sensitive photodetector”

ACS photonics, 8, 2650 (2021)

Joo-Hyun Kim, Hyemi Han, Min Kyu Kim, Jongtae Ahn, Do Kyung Hwang, Tae Joo Shin, Byoung Koun Min*, Jung Ah Lim*

“Solution-processed near-infrared Cu (In, Ga)(S, Se) 2 photodetectors with enhanced chalcopyrite crystallization and bandgap grading structure via potassium incorporation”

Scientific Reports, 11 (1), 1-10 (2021)

Tae Wook Kim, Hyun Soo Ra, Jongtae Ahn, Jisu Jang, Takashi Taniguchi, Kenji Watanabe, Jae Won Shim, Young Tack Lee*, Do Kyung Hwang*

“Frequency Doubler and Universal Logic Gate Based on Two-Dimensional Transition Metal Dichalcogenide Transistors with Low Power Consumption”

ACS Applied Materials & Interfaces 13 (6), 7470-7475 (2021)

Il-Ho Ahn#, Jongtae Ahn#, Do Kyung Hwang, Deuk Young Kim*

“A new method of carrier density measurement using photocurrent maps of a 2D material Schottky diode”

Results in Physics 21,103854 (2021)

2020

Hyoungjun Kim, Tae-Hyung Kang, Jongtae Ahn, Hyemi Han, Seongjin Park, Soo Jin Kim, Min-Chul Park, Seung-ho Paik, Do Kyung Hwang, Hyunjung Yi, Jung Ah Lim*

“Spirally Wrapped Carbon Nanotube Microelectrodes for Fiber Optoelectronic Devices beyond Geometrical Limitations toward Smart Wearable E-Textile Applications”

ACS Nano 14 (12), 17213–17223 (2020)

Jongtae Ahn#, Ji-Hoon Kang#, Min-Chul Park*, Do Kyung Hwang*

“All 2D WSe2/MoS2 heterojunction photodiode and its image sensor application”

Optics Letters 45 (16), 4531-4534 (2020)

Hyun Tae Choi#, Ji-Hoon Kang#, Jongtae Ahn#, Junyoung Jin, Jaeyoung Kim, Soohyung Park, Yong-Hoon Kim, Heedae Kim, Jin Dong Song, Gyu Weon Hwang, Seongil Im, Wooyoung Shim, Young Tack Lee*, Min-Chul Park*, Do Kyung Hwang*

“Zero-Dimensional PbS Quantum Dot–InGaZnO Film Heterostructure for Short-Wave Infrared Flat-Panel Imager”

ACS Photonics 7 (8),1932-1941 (2020)

Jongtae Ahn#, Ji-Hoon Kang#,

Jihoon Kyhm#, Hyun Tae Choi, Minju Kim ,Dae-Hwan Ahn, Dae-Yeon Kim, Il-Ho Ahn, Jong Bae park, soohyung Park, Yeonjin Yi, Jin Dong Song, Min-Chul Park*,Seongil Im*, Do Kyung Hwang*

“Self-Powered Visible–Invisible Multiband Detection and Imaging Achieved Using High-Performance 2D MoTe2/MoS2 Semivertical Heterojunction Photodiodes”

ACS Applied Materials & Interfaces 12, 10858 (2020)

~2019

Han Sol Lee, Sam Park, June Yeong Lim, Sanghyuck Yu, Jongtae Ahn, Do Kyung Hwang, Yumin Sim, Je-Ho Lee, Maeng Je Seong, Sehoon Oh, Hyoung Joon Choi, Seongil Im*

“Impact of H‐Doping on n‐Type TMD Channels for Low‐Temperature Band‐Like Transport”

Small 15 (38), 1901793 (2019)

Soo Jin Kim, Hyoungjun Kim, Jongtae Ahn, Do Kyung Hwang, Hyunsu Ju, Min‐Chul Park, Hoichang Yang, Se Hyun Kim, Ho Won Jang, Jung Ah Lim*

“A New Architecture for Fibrous Organic Transistors Based on a Double‐Stranded Assembly of Electrode Microfibers for Electronic Textile Applications”

Advanced Materials 31, 1900564 (2019)

Na Yeon Kim, Jihoon Kyhm, Hyemi Han, Soo Jin Kim, Jongtae Ahn, Do Kyung Hwang, Ho Won Jang, Byeong‐Kwon Ju* and Jung Ah Lim*

“Chiroptical-Conjugated Polymer/Chiral Small Molecule Hybrid Thin Films for Circularly Polarized Light-Detecting Heterojunction Devices”

Advanced Functional Materials 29, 1808668 (2019)

Hyo Sun Lee#,

Jongtae Ahn#, Wooyoung Shim, Seongil Im, Do Kyung Hwang*

"2D WSe2/MoS2 van der Waals heterojunction photodiode for visible-near infrared broadband detection"

Applied Physics Letters 113 (16), 163102 (2018)

Young Tack Lee, Ji-Hoon Kang, Kisung Kwak, Jongtae Ahn, Hyun Tae Choi, Byeong-Kwon Ju, Seyed Hossein Shokouh, Seongil Im*, Min-Chul Park*, Do Kyung Hwang*

“High-Performance 2D MoS2 Phototransistor for Photo Logic Gate and Image Sensor”

ACS Photonics 5 (12), 4745-4750 (2018)

Yeonsu Jeong, Ji Hoon Park, Jongtae Ahn, June Yeong Lim, Eunkyoung Kim, Seongil Im*

“2D MoSe2 Transistor with Polymer-Brush/Channel Interface”

Advanced Materials Interfaces 5 (19), 1800812 (2018)

Yongjae Cho, Ji Hoon Park, Minju Kim, Yeonsu Jeong, Jongtae Ahn, Taeyoung Kim, Hyunyong Choi, Yeonjin Yi, Seongil Im*

“Fully Transparent p-MoTe2 2D Transistors Using Ultrathin MoOx/Pt Contact Media for Indium/Tin/Oxide Source/Drain”

Advanced Functional Materials 28 (39), 1801204 (2018)

Hyejoo Lee, Jongtae Ahn, Seongil Im, Jiyoung Kim, Woong Choi*

“High-Responsivity Multilayer MoSe2 Phototransistors with Fast Response Time”

Scientific reports 8 (1), 11545 (2018)

Young Tack Lee, Pyo Jin Jeon, Jae Hyun Han, Jongtae Ahn, Hyo Sun Lee, June Yeong Lim, Won Kook Choi, Jin Dong Song, Min-Chul Park*, Seongil Im* and Do Kyung Hwang*

“Mixed-Dimensional 1D ZnO-2D WSe2 van der Waals Heterojunction Device for Photosensors”

Advanced Functional Materials 27, 1703822 (2017)

Sanghyuck Yu, Jin Sung Kim, Pyo Jin Jeon, Jongtae Ahn, Jae Chul Park* and Seongil Im*

“Transition Metal Dichalcogenide-Based Transistor Circuits for Gray Scale Organic Light Emitting Display”

Advanced Functional Materials 27, 1603682 (2017)

Jongtae Ahn#, Pyo Jin Jeon, Syed

Raza Ali Raza, Atiye Pezeshki, Sung-Wook Min, Do Kyung Hwang and Seongil Im*

"Transition metal

dichalcogenide heterojunction PN diode toward ultimate photovoltaic benefits"

2D Materials 3, 045011 (2016)