Hyun-Soo Ra#, Tae Wook Kim#, Derrick Allan Taylor#, Je-Jun Lee, Seung Ho Son, 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, Impact Factor 32.086, 2303664, 2024 (FA)

Hyun-Soo Ra#, Sang-Hyeon Lee#, Seock-Jin Jeong#, Sinyoung Cho, Jong-Soo Lee*,
“Advances in Heterostructures for Optoelectronic Devices: Materials, Properties, Conduction Mechanisms, Device Applications” (Review Paper)
Small Methods, Impact Factor 15.367, 2300245, 2023 (FA)

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, Impact Factor 32.086, 2109899, 2022 (FA)

Hyun-Soo Ra#, Jongtae Ahn#, Jisu Jang#, Tae Wook Kim, Seungho Song, Young Jae Song, Takashi Taniguchi, Kenji Watanabe, Jong-Soo Lee*, Do Kyung Hwang*, “Asymmetry Field Effect Phototransistor to overcome High Exciton Binding Energy of 2D TMDCs Materials”
Advanced Materials, Impact Factor 32.086, 2107468, 2022 (FA)

Min-Hye Jeong#, Hyun-Soo Ra#, Sang-Hyun Lee, Do-Hyun Kwak, Jongtae Ahn, Do Kyung Hwang*, Jong-Soo Lee*, “Multilayer WSe2/MoS2 heterojunction phototransistors through periodically arrayed nanopore structures for bandgap engineering”,
Advanced Materials, Impact Factor 32.086, 202108412, 2022 (FA)

Jongtae Ahn, Kyul Ko, Ji-hoon Kyhm, Hyun-Soo Ra, Heesun Bae, Sungjae Hong, Dae-Yeon Kim, Jisu Jang, Tae Wook Kim, Sungwon Choi, 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, Impact Factor 18.027, 15, 11, 17917–17925, 2021 (CA)

Tae Wook Kim#, Hyun Soo Ra#, Jongtae Ahn, Jisu Jang, Takashi Taniguchi, Kenji Watanabe, Jae Won Shim, Young Tack Lee, and Do Kyung Hwang*, “Frequency Doubler and Universal Logic Gate Based on 2D Transition Metal Dichalcogenides Transistors with Low Power Consumption”
ACS Applied Materials & Interfaces, Impact Factor 10.383, 13,6 7470-7475, 2021 (FA)

Hyun-Soo Ra#, Min-Hye Jeong#, Taegeun Yoon, Seungsoo Kim, Young Jae Song, Jong-Soo Lee*,
“Probing the importance of Charge Balance and Noise Current in WSe2/WS2/MoS2 van der Waals Heterojunction Phototransistors by selective electrostatic doping”
Advanced Science, Impact Factor 15.620, 7, 2001475, 2020 (FA)

Do-Hyun Kwak, Min-Hye Jeong, Hyun-Soo Ra, A-Young Lee, and Jong-Soo Lee*, “lateral WSe2 p-n junction device electrically controlled by a single-gate electrode”
Advanced Optical Materials, Impact Factor 10.050, 1900051, 2019 (CA)

Young Lee#, Hyun-Soo Ra#, Do-Hyun Kwak, Min-Hye Jeong, Jeong-Hyun Park, Yeon-Su Kang, Weon-Sik Chae, Jong-Soo Lee*, “Hybrid Black Phosphorus/Zero-Dimensional Quantum Dot Phototransistors: Tunable Photodoping and Enhanced Photoresponsivity”
ACS Applied Materials & Interfaces, Impact Factor 10.383, 10, 18, 16033-16040, 2018 (FA)

Do‐Hyun Kwak, Hyun‐Soo Ra, Min‐Hye Jeong, A‐Young Lee, Jong‐Soo Lee*, “High‐Performance Photovoltaic Effect with Electrically Balanced Charge Carriers in Black Phosphorus and WS2 Heterojunction”
Advanced Materials Interfaces, Impact Factor 6.389, 5, 18, 1800671, 2018 (CA)

Min-Hye Jeong#, Dohyun Kwak#, Hyun-Soo Ra, A-Young Lee, Jong-Soo Lee*, “Realizing Long-Term Stability and Thickness-Control of Black Phosphorus by Ambient Thermal Treatment”
ACS Applied Materials & Interfaces, Impact Factor 10.383, 10, 22, 19069-19075, 2018 (CA)

Do‐Hyun Kwak#, Hyun‐Soo Ra#, Jinhoon Yang, Min‐Hye Jeong, A‐Young Lee, Wonki Lee, Jun Yeon Hwang, Joo‐Hyoung Lee*, Jong‐Soo Lee*, “Recovery Mechanism of Degraded Black Phosphorus Field‐Effect Transistors by 1, 2‐Ethanedithiol Chemistry and Extended Device Stability”
Small, Impact Factor 15.153, 14, 6, 1703194, 2018 (FA)

Hyun-Soo Ra#, A-Young Lee#, Do-Hyun Kwak, Min-Hye Jeong, Jong-Soo Lee*, “Dual-Gate Black Phosphorus Field-Effect Transistors with Hexagonal Boron Nitride as Dielectric and Passivation Layers”
ACS Applied Materials & Interfaces, Impact Factor 10.383, 10, 1, 925-932, 2017 (FA)

Hyun-Soo Ra#, Do-Hyun Kwak#, Jong-Soo Lee*, “A hybrid MoS2 nanosheet–CdSe nanocrystal phototransistor with a fast photoresponse”
Nanoscale, Impact Factor 8.307, 8, 39, 17223-17230, 2016 (FA)

Parthiban Ramasamy#, Miri Kim#, Hyun-Soo Ra, Jinkwon Kim, Jong-Soo Lee*, “Bandgap tunable colloidal Cu-based ternary and quaternary chalcogenide nanosheets via partial cation exchange”
Nanoscale, Impact Factor 8.307, 8, 15, 7906-7913, 2016 (CA)

Do-Hyun Kwak, Da-Hye Lim, Hyun-Soo Ra, Parthiban Ramasamy, Jong-Soo Lee*, “High performance hybrid graphene–CsPbBr3− x Ix perovskite nanocrystal photodetector”
RSC Advances, Impact Factor 4.036, 6, 69, 65252-65256, 2016 (CA)

Parthiban Ramasamy, Dohyun Kwak, Da-Hye Lim, Hyun-Soo Ra, Jong-Soo Lee*, “Solution synthesis of GeS and GeSe nanosheets for high-sensitivity photodetectors”
Journal of Materials Chemistry C, Impact Factor 8.067, 4, 3, 479-485, 2016 (CA)