Hybrid Thin Film Processing Lab HTFP

School of Chemical Engineering · Chonnam National University

Engineering films one atomic layer at a time — from process to device.

The Hybrid Thin Film Processing Laboratory (HTFP Lab) designs thin films by CVD and ALD, builds them into semiconductor, photodetector, and sensor devices, and extends the same process insight to materials for semiconductor packaging. We start from precursors and surface reactions, and finish at device performance and reliability.

Publications
43
Citations
1,300+
Members
9
01 / RESEARCH

Research Areas

Research cycle diagram linking materials, device fabrication, and evaluation around a novel functional device
Materials · Device fabrication · Evaluation

We run the full loop in one place. A film is designed from its precursor chemistry, fabricated into a device, and measured until its limits are clear — and what we learn at the measurement stage goes straight back into the next material.

That loop is what lets a process question and a device question be answered together rather than handed off between groups.

AREA 01

CVD / ALD Thin-Film Processing

We control film composition and thickness at the atomic scale using chemical vapor deposition and atomic layer deposition — from precursor chemistry and surface reaction mechanisms to step coverage on high-aspect-ratio structures and low-temperature / plasma-enhanced process windows.

ALDCVDPEALDoCVDPRECURSORSTEP COVERAGE

AREA 02

Semiconductor · Photodetector · Sensor

We turn engineered films into working devices and verify them by their figures of merit — oxide semiconductors and channel/dielectric interfaces, photodetector responsivity and dark current, and the sensitivity and stability of chemical and environmental sensors.

PHOTODETECTOROXIDE SEMICONDUCTORCHEMICAL SENSORSCINTILLATOR

AREA 03

Materials for Semiconductor Packaging

We study the materials and interfaces demanded by back-end processes — insulating and barrier films, adhesion and thermal/moisture reliability at bonded interfaces, and compatibility with fine-pitch interconnect processing.

ADVANCED PACKAGINGBARRIER FILMINTERFACERELIABILITY
Research roadmap: AI-driven oCVD polymer deposition feeding OECT neuromorphic semiconductors, energy devices, and sensors
AI-driven polymer deposition by oCVD → OECT neuromorphic semiconductors, energy devices, and purpose-tailored sensors
02 / PEOPLE

People

Portrait of Prof. Hyeonghun Kim

Hyeonghun Kim, Ph.D.

ASSISTANT PROFESSOR · PRINCIPAL INVESTIGATOR

School of Chemical Engineering, Chonnam National University

Education

2014.03 – 2020.08
M.S. & Ph.D. integrated course
School of Materials Science and Engineering,
Gwangju Institute of Science and Technology (GIST) Advisor: Prof. Gun Young Jung
2010.03 – 2014.02
B.S., Magna Cum Laude
Department of Chemistry,
Gwangju Institute of Science and Technology (GIST)

Combined B.S.–M.S. Program

Minkyu JeonB.S.–M.S.
Minkyu JeongB.S.–M.S.
Eunjeong JangB.S.–M.S.
Seojun HwangB.S.–M.S.
Gwanmin ParkB.S.–M.S.

Undergraduate Students

Yunho ChoiUNDERGRADUATE
Kiho ChoiUNDERGRADUATE
Yongju LeeUNDERGRADUATE
03 / PUBLICATIONS

Publications

  • 2026

    C.APowder Atomic Layer Deposition–Enabled Stable Perovskite Phosphors for UV-Wavelength-Discriminable Luminescent Films

    Dong Geon Shin, Seon Kyeong Kim, Min Kyu Jeon, Dante Ahn, Yusin Pak, Yoon Soo Han, Yeong Jae Kim, and Hyeonghun Kim*

    Advanced Optical Materials 14 (7), e02641

  • 2026

    Light-Driven Reconfigurable Logic in a Monolithic Perovskite Device via Nonlinear Photoresponse Switching

    Dante Ahn, Youngsoo Jang, Minz Lee, WooKyung Jeon, Yohan Yoon, Heon Lee, Assa Aravindh Sasikala, Namsoo Lim, Chandran Balamurugan, Hyeonghun Kim, et al.

    Advanced Materials 38 (14), e09566

  • 2025

    C.ALow-bias, broadband photodetection enabled by MAPbI₃/black silicon dual-mode photodetector for compact optoelectronic platformsSELECTED

    Junyeong Sung, Min Seong Kim, Hyeonryul Lee, Gil Ju Lee, Hyeonghun Kim, and Sooncheol Kwon

    Chemical Engineering Journal 527, 171589

  • 2025

    Ultrasensitive and spectrally selective WSe₂/MoS₂ photodetector via metal–2D interface modulation for infrared signal recognition

    Hyeonmin Bong, Gihyeon Kwon, Jinsik Choe, Huiyeong Lee, Woochan Koh, Hyeonghun Kim, Kwangsik Jeong, Sungjin Park, and Mann-Ho Cho

    InfoMat, e70065

  • 2025

    Rolling the Dice with Light Competition: Introducing a True Random Number Generator Powered by Photo-Induced Polarity Current

    Taehyun Park, Juhyung Seo, Namju Kim, Chaehyun Kim, Yeong Jae Kim, Hyeonghun Kim, Hyun Ho Kim, Seyong Oh, Dong Chan Kim, Donghee Son, et al.

    Advanced Materials 37 (14), 2419579

  • 2025

    C.ANovel strategy for suppressing the electrical conductivity of high-loaded CNT/epoxy composites prepared using powder atomic layer deposition

    Donggeon Shin, Yoonsoo Han, and Hyeonghun Kim*

    Materials Today Communications 45, 112327

  • 2024

    C.AFrom Light to Logic: Recent Advances in Optoelectronic Logic Gates Review

    Woochul Kim, Dante Ahn, Minz Lee, Namsoo Lim, Hyeonghun Kim*, and Yusin Pak*

    Small Science 4 (12), 2400264

  • 2024

    C.AMonolithic Perovskite–Silicon Dual-Band Photodetector for Efficient Spectral Light Discrimination

    Woochul Kim, Yeonju Seo, Dante Ahn, In Soo Kim, Chandran Balamurugan, Gun Young Jung, Sooncheol Kwon, Hyeonghun Kim*, and Yusin Pak*

    Advanced Science 11 (21), 2308840

  • 2023

    High-performance rechargeable metal–air batteries enabled by efficient charge transport in multielement random alloy electrocatalyst

    Chandran Balamurugan, Changhoon Lee, Kyusang Cho, Jehan Kim, Byoungwook Park, Woochul Kim, Namsoo Lim, Hyeonghun Kim, Yusin Pak, Keun Hwa Chae, et al.

    Applied Catalysis B: Environmental 330, 122631

  • 2022

    1stPerovskite multifunctional logic gates via bipolar photoresponse of single photodetectorSELECTED

    Woochul Kim†, Hyeonghun Kim†, Tae Jin Yoo, Jun Young Lee, Ji Young Jo, Byoung Hun Lee, Assa Aravindh Sasikala, Gun Young Jung, and Yusin Pak  (†equal contribution)

    Nature Communications 13, 720

  • 2022

    1stHybrid Silicon–Polymer Photodetector Engineered Using Oxidative Chemical Vapor Deposition for High-Performance and Bias-Switchable Multi-FunctionalitySELECTED

    Hyeonghun Kim, Yuxuan Zhang, Molly Rothschild, Kwangdong Roh, Yunseok Kim, Ho Seong Jang, Byung-Cheol Min, and Sunghwan Lee

    Advanced Functional Materials 32 (29), 2201641

  • 2022

    1stBias-Switchable Photodetector from Broad-Band to UV-Selective Detection Mode Leveraging Nanolayered Dual-Schottky Junction

    Hyeonghun Kim, Molly Rothschild, Dong Hun Lee, Chung Soo Kim, Jeongmin Park, Byung-Cheol Min, and Sunghwan Lee

    ACS Applied Nano Materials 5 (12), 17891–17899

  • 2022

    Ultrahigh active material content and highly stable Ni-rich cathode leveraged by oxidative chemical vapor deposition

    Yuxuan Zhang, Chung Soo Kim, Han Wook Song, Sung-Jin Chang, Hyeonghun Kim, Jeongmin Park, Shan Hu, Kejie Zhao, and Sunghwan Lee

    Energy Storage Materials 48, 1–11

  • 2021

    1stBinder-free printed PEDOT wearable sensors on everyday fabrics using oxidative chemical vapor depositionSELECTED

    Michael Clevenger†, Hyeonghun Kim†, Han Wook Song, Kwangsoo No, and Sunghwan Lee  (†equal contribution)

    Science Advances 7 (42), eabj8958

  • 2021

    1stCarrier density-tunable work function buffer at the channel/metallization interface for amorphous oxide thin-film transistors

    Mingyuan Liu†, Hyeonghun Kim†, Xingyu Wang, Han Wook Song, Kwangsoo No, and Sunghwan Lee  (†equal contribution)

    ACS Applied Electronic Materials 3 (6), 2703–2711

  • 2021

    Reactant/polymer hybrid films on p–n junction photodetectors for self-powered, non-invasive glucose biosensors

    Kihyeun Kim, Hyeonghun Kim, Eun-Jung Jo, Hyungjun Jang, Jiyoon Park, Gun Young Jung, and Min-Gon Kim

    Biosensors and Bioelectronics 175, 112855

  • 2021

    Origin of an unintended increase in carrier density of ternary cation-based amorphous oxide semiconductors

    Mingyuan Liu, Xingyu Wang, Han Wook Song, Hyeonghun Kim, Michael Clevenger, Dong-Kyun Ko, Kwangsoo No, and Sunghwan Lee

    Applied Surface Science 556, 149676

  • 2021

    Enhanced NO₂ sensing performance of graphene with thermally induced defects

    Namsoo Lim, Hyeonghun Kim, Yusin Pak, and Young Tae Byun

    Materials 14 (9), 2347

  • 2021

    High-performance oxide-based p–n heterojunctions integrating p-SnOₓ and n-InGaZnO

    Dong Hun Lee, Honghwi Park, Michael Clevenger, Hyeonghun Kim, Chung Soo Kim, Mingyuan Liu, Giyong Kim, Han Wook Song, Kwangsoo No, Sung Yeol Kim, et al.

    ACS Applied Materials & Interfaces 13 (46), 55676–55686

  • 2020

    1stBias-Modulated Multicolor Discrimination Enabled by an Organic–Inorganic Hybrid Perovskite Photodetector with a p-i-n-i-p Configuration

    Hyeonghun Kim†, Woochul Kim†, Yusin Pak, Tae Jin Yoo, Hae-Won Lee, Byoung Hun Lee, Sooncheol Kwon, and Gun Young Jung  (†equal contribution)

    Laser & Photonics Reviews 14 (11), 2000305

  • 2020

    1stHigh-performance photovoltaic hydrogen sensing platform with a light-intensity calibration module

    Hyeonghun Kim, Woochul Kim, Ryeri Lee, Sungjun Cho, Jiyoon Park, Yusin Pak, and Gun Young Jung

    ACS Sensors 5 (4), 1050–1057

  • 2020

    1stMolecular sieve based on a PMMA/ZIF-8 bilayer for a CO-tolerable H₂ sensor with superior sensing performance

    Hyeonghun Kim, Woochul Kim, Sungjun Cho, Jiyoon Park, and Gun Young Jung

    ACS Applied Materials & Interfaces 12 (25), 28616–28623

  • 2020

    Molecular-level electrochemical doping for fine discrimination of volatile organic compounds in organic chemiresistors

    Sooncheol Kwon, Yusin Pak, Bongseong Kim, Byoungwook Park, Jehan Kim, Geunjin Kim, Yong-Ryun Jo, Saurav Limbu, Katherine Stewart, Hyeonghun Kim, et al.

    Journal of Materials Chemistry A 8 (33), 16884–16891

  • 2020

    Omnidirectional stretchable inorganic-material-based electronics with enhanced performance

    Yogeenth Kumaresan, Hyeonghun Kim, Yusin Pak, Praveen Kumar Poola, Ryeri Lee, Namsoo Lim, Heung Cho Ko, Gun Young Jung, and Ravinder Dahiya

    Advanced Electronic Materials 6 (7), 2000058

  • 2020

    Enhanced photoresponse of WS₂ photodetectors through interfacial defect engineering using a TiO₂ interlayer

    Yusin Pak, Woojin Park, Naresh Alaal, Yogeenth Kumaresan, S. Assa Aravindh, Somak Mitra, Bin Xin, Jung-Wook Min, Hyeonghun Kim, Namsoo Lim, et al.

    ACS Applied Electronic Materials 2 (3), 838–845

  • 2020

    Dark-current reduction accompanied photocurrent enhancement in p-type MnO quantum-dot decorated n-type 2D-MoS₂-based photodetector

    Yusin Pak, Somak Mitra, Naresh Alaal, Bin Xin, Sergei Lopatin, Dhaifallah Almalawi, Jung-Wook Min, Hyeonghun Kim, Woochul Kim, Gun-Young Jung, et al.

    Applied Physics Letters 116 (11)

  • 2019

    Highly stable and ultrafast hydrogen gas sensor based on 15 nm nanogaps switching in a palladium–gold nanoribbons array

    Yusin Pak, Yeonggyo Jeong, Naresh Alaal, Hyeonghun Kim, Jeonghoon Chae, Jung-Wook Min, Assa Aravindh Sasikala Devi, Somak Mitra, Da Hoon Lee, Yogeenth Kumaresan, et al.

    Advanced Materials Interfaces 6 (4), 1801442

  • 2019

    Enhanced long-term stability of perovskite solar cells by passivating grain boundary with polydimethylsiloxane (PDMS)

    Woochul Kim, Jong Bae Park, Hyeonghun Kim, Kihyeun Kim, Jiyoon Park, Sungjun Cho, Heon Lee, Yusin Pak, and Gun Young Jung

    Journal of Materials Chemistry A 7 (36), 20832–20839

  • 2019

    Solid-phase photocatalysts: physical vapor deposition of Au nanoislands on porous TiO₂ films for millimolar H₂O₂ production within a few minutes

    Kihyeun Kim, Jiyoon Park, Hyeonghun Kim, Gun Young Jung, and Min-Gon Kim

    ACS Catalysis 9 (10), 9206–9211

  • 2019

    Plasmon enhanced up-conversion nanoparticles in perovskite solar cells for effective utilization of near infrared light

    Jiyoon Park, Kihyeun Kim, Eun-Jung Jo, Woochul Kim, Hyeonghun Kim, Ryeri Lee, Jun Young Lee, Ji Young Jo, Min-Gon Kim, and Gun Young Jung

    Nanoscale 11 (47), 22813–22819

  • 2019

    Improvement of perovskite crystallinity by omnidirectional heat transfer via radiative thermal annealing

    Jiyoon Park, Jin Woo Choi, Woochul Kim, Ryeri Lee, Hee Chul Woo, Jisoo Shin, Hyeonghun Kim, Yeong Jun Son, Ji Young Jo, Heon Lee, et al.

    RSC Advances 9 (26), 14868–14875

  • 2019

    Enhanced photo-response of MoS₂ photodetectors by a laterally aligned SiO₂ nanoribbon array substrate

    Namsoo Lim, Yusin Pak, Jae-Keun Kim, Tae Jin Yoo, Hyeonghun Kim, Yogeenth Kumaresan, Woochul Kim, Seongjun Cho, Sooncheol Kwon, Byoung Hun Lee, et al.

    ChemNanoMat 5 (10), 1272–1279

  • 2018

    1stAmorphous Pd-assisted H₂ detection of ZnO nanorod gas sensor with enhanced sensitivity and stability

    Hyeonghun Kim, Yusin Pak, Yeonggyo Jeong, Woochul Kim, Jeongnam Kim, and Gun Young Jung

    Sensors and Actuators B: Chemical 262, 460–468

  • 2018

    1stSurface conversion of ZnO nanorods to ZIF-8 to suppress surface defects for a visible-blind UV photodetector

    Hyeonghun Kim, Woochul Kim, Jiyoon Park, Namsoo Lim, Ryeri Lee, Sung Jun Cho, Yogeenth Kumaresan, Myoung-Kyu Oh, and Gun Young Jung

    Nanoscale 10 (45), 21168–21177

  • 2018

    Self-powered biosensors using various light sources in daily life environments: integration of p–n heterojunction photodetectors and colorimetric reactions for biomolecule detection

    Kihyeun Kim, Hyeonghun Kim, Hyungjun Jang, Jiyoon Park, Gun-Young Jung, and Min-Gon Kim

    ACS Applied Materials & Interfaces 10 (46), 39487–39493

  • 2018

    Tunable graphene doping by modulating the nanopore geometry on a SiO₂/Si substrate

    Namsoo Lim, Tae Jin Yoo, Jin Tae Kim, Yusin Pak, Yogeenth Kumaresan, Hyeonghun Kim, Woochul Kim, Byoung Hun Lee, and Gun Young Jung

    RSC Advances 8 (17), 9031–9037

  • 2018

    Extremely flexible indium-gallium-zinc oxide (IGZO) based electronic devices placed on an ultrathin poly(methyl methacrylate) (PMMA) substrate

    Yogeenth Kumaresan, Ryeri Lee, Namsoo Lim, Yusin Pak, Hyeonghun Kim, Woochul Kim, and Gun-Young Jung

    Advanced Electronic Materials 4 (7), 1800167

  • 2018

    Scalable integration of periodically aligned 2D-MoS₂ nanoribbon array

    Yusin Pak, Y. Kim, N. Lim, J.-W. Min, Woojin Park, W. Kim, Y. Jeong, H. Kim, K. Kim, Somak Mitra, et al.

    APL Materials 6 (7)

  • 2017

    Ultra-high sensitivity to low hydrogen gas concentration with Pd-decorated IGZO film

    Yogeenth Kumaresan, Hyeonghun Kim, Yeonggyo Jeong, Yusin Pak, Sungjun Cho, Ryeri Lee, Namsoo Lim, and Gun Young Jung

    IEEE Electron Device Letters 38 (12), 1735–1738

  • 2017

    Sequential dip-spin coating method: full infiltration of MAPbI₃₋ₓClₓ into mesoporous TiO₂ for stable hybrid perovskite solar cells

    Woochul Kim, Jiyoon Park, Hyeonghun Kim, Yusin Pak, Heon Lee, and Gun Young Jung

    Electrochimica Acta 245, 734–741

  • 2017

    1stThermally converted CoO nanoparticles embedded into N-doped carbon layers as highly efficient bifunctional electrocatalysts for oxygen reduction and oxygen evolution reactions

    Hyeonghun Kim, Youngmin Kim, Yuseong Noh, Seonhwa Lee, Jaekyung Sung, and Won Bae Kim

    ChemCatChem 9 (8), 1503–1510

  • 2016

    1stUltrathin amorphous α-Co(OH)₂ nanosheets grown on Ag nanowire surfaces as a highly active and durable electrocatalyst for oxygen evolution reaction

    Hyeonghun Kim, Youngmin Kim, Yuseong Noh, and Won Bae Kim

    Dalton Transactions 45 (35), 13686–13690

  • 2014

    PtAg nanotubes for electrooxidation of ethylene glycol and glycerol in alkaline media

    Youngmin Kim, Hyeonghun Kim, and Won Bae Kim

    Electrochemistry Communications 46, 36–39

[1st] first author (including co-first authorship) · [C.A] corresponding author · This list is representative, not exhaustive.

Full list · Google Scholar
04 / NEWS

News

  • The HTFP Lab website is now open.

  • Our work on a MAPbI₃/black-silicon dual-mode photodetector was published in Chemical Engineering Journal.

  • [EDIT] New graduate and undergraduate members joined the lab.

05 / JOIN US

We are looking for new members

We welcome graduate students (M.S./Ph.D. and combined B.S.–M.S.) and undergraduate researchers year-round, from chemical engineering, materials, chemistry, physics, and electronics backgrounds. What matters most is hands-on curiosity — the willingness to run the tools and chase the data to the end.

  • Reading one or two of our papers before reaching out makes the first meeting much more productive.
  • Email with the subject line "[Application] Name / Program".
  • Please attach your CV, transcript, and a short note on your research interests.
Address
School of Chemical Engineering,
Chonnam National University,
77 Yongbong-ro, Buk-gu, Gwangju 61186, Republic of Korea