Yun Lab

Advanced (Stretchable) Electronic Materials and Devices

Welcome to Yun Lab

Yun Lab, led by Professor Youngjun Yun at Hallym University, South Korea, is dedicated to advancing research in organic and inorganic-based piezoresistive sensors, photodiodes, and thin-film transistors for next-generation skin-attachable healthcare wearables.

Our mission is to develop innovative electronic materials and devices that enable seamless integration with the human body for real-time health monitoring and diagnostics.

We are always seeking highly motivated and creative students and researchers who are passionate about this field. If you are interested in joining our team or learning more about our work, please don’t hesitate to contact us at youngjun.yun@hallym.ac.kr.

Group Announcements

Congratulations to Ms. Kim on the publication of her first paper as the first author!

"Low-temperature Stamp Transfer of Sol–Gel IGZO Thin Films with Preserved Electrical Properties," Electronic Materials Letters (IF 2.6 / Q3)

19 May 2026

Featured in the media (Korean Hospital News).

A joint research team led by Jin Kim from Hallym University Dongtan Sacred Heart Hospital and Youngjun Yun from Hallym University has recently been selected for the Bio & Medical Technology Development Program (Advanced Brain Bioengineering Field-01) funded by the National Research Foundation of Korea. The selected project is titled: “Development of an Intelligent Wireless Electromyography Synchronization System for Restoring Social Communication in Patients with Facial Disorders: Demonstration of Symmetrical Facial Expression Reproduction and Social Brain Activation Using an Attachable Wearable Device.” Through this project, the research team will receive a total of KRW 2.5 billion in research funding over five years through 2030.

18 May 2026

Congratulations to Mr. Jeong on starting a new position at Linde AMT Chonan Co., Ltd.!

Wishing you great success and an exciting journey ahead in your new role. Best of luck in this new chapter of your career!

Congratulations to Mr. Jeong, Mr. Baek, Mr. Lee, Mr. Yoo, and Ms. Kim on receiving your master’s degrees (Mr. Jeong is not in the photo).

25 Feburuary 2026

Congratulations to Master’s student Mr. Lee on the publication of his first paper as the first author!

"An Investigation of Electrical Performance of Polymer-Based Stretchable TFTs under Mechanical Strain Using Y-Function Method," Polymers (IF 4.9 / Q1)

5 February 2026

The HIARC–UAC Joint Symposium has been featured in the media.

At the 1st Hallym International Antimicrobial Resistance Center–Uppsala Antibiotic Center Joint Symposium, the program commenced with opening remarks by Kyungho Yoo, Dean of the College of Medicine at Hallym University. This was followed by a congratulatory address by Yang Soo Kim, Professor at Asan Medical Center. Presentations included an introduction to the Uppsala Antibiotic Center by Eva Garmendia, Project Coordinator; an overview of the HIARC by Yong Gyun Kim, Director of the Center; ongoing collaborative projects presented by Nikos Patsis, Researcher at the UAC; wearable biosensor technology for real-time vancomycin monitoring by Prof. Youngjun Yun at Hallym University; and non-traditional therapeutic strategies to combat antimicrobial resistance by Minho Lee, Professor at Hallym University College of Medicine.

8 December 2025

Congratulations to Master’s student Mr. Jeong on the publication of his first paper as the first author!

Crack-Based Strain Sensor with Serpentine Structure for Real Time Motion Monitoring in Electronic Skin Applications," ACS Applied Engineering Materials (IF 3.5 / Q2)

30 September 2025

Congratulations to Master’s student Mr. Baek on the publication of his first paper as the first author!

"High-Detectivity Organic Photodetector with InP Quantum Dots in PTB7-ThPC71BM Ternery Bulk Heterojunction," Polymers (IF 4.9 / Q1)

13 August 2025

A press release on the RLRC project research was featured in the Chosun Ilbo.

Advanced Research Outcomes in Medical and AI-Based Biosensors Presented by RLRC.

In the study titled “Optical Signal-Based Biosignal Detection Technology,” with Prof. Youngjun Yun serving as the corresponding author, a low-power, high-sensitivity photodetector technology - Photomultiplication Organic Photodetectors (PM-OPDs) - was developed through optical signal amplification. This work was published in Advanced Functional Materials, a globally recognized journal ranked within the top 4% of JCR.

7 March 2025

5 papers authored by Prof. Yun received citations to place it in the top 1%.

These paper received enough citations to rank in the top 1% of publications in the academic field of Materials Science / Engineering based on essential science indicators (ESI) threshold for its field and publication year.

These publications are classified as "Highly Cited Papers." These publications are identified by Web of Science based on exceeding specific, field-dependent citation thresholds, representing exceptional impact.

Jan/Feb 2025