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Research Highlight

KSJ research group aims to develop and characterize novel functional materials. 

We synthesize novel materials and measure optical, electrical, magnetic, and chemical properties using various methods. Performing both synthesis and characterization enables us to clearly understand the underlying photophysical and photochemical phenomena. Also, we fabricate QLED and infrared photodetectors.


i) Steady-state intraband and interband transitions of Quantum Dots

ii) QLED and IR QD Photodetector

iii) Quantum Plasmon Resonance of Nanocrystals


iii) Infrared lasing nanomaterials


"Unveiling Ultrafast Carrier Dynamics of Tellurium Microcrystals by Two-Color Asynchronous Sampling Infrared Transient Absorption Spectroscopy"

J. Phys. Chem. C  ASAP

Tellurium (Te) microcrystal with a bandgap of approximately 0.37 eV is a potentially useful semiconducting material exhibiting ultrafast electronic relaxation processes.


To measure the intervalley and intravalley relaxation rates, we carried out two-color near-IR (NIR) pump and mid-IR (MIR) probe studies of rod-type Te microcrystals, employing a repetition-frequency-stabilized NIR (800 nm) laser and an MIR (3300 nm) frequency comb.

Congratulations, Dr. Ngoc Mai An, on joining Quantum Science (UK), this coming March 2024! We are so proud of all you have accomplished!

응옥마이안 박사가 영국 Quantum Science 에 취업하였습니다. 축하합니다!


우리는 콜로이드 반도체를 연구하는 연구자들입니다. 양자점 등의 저차원 콜로이드 반도체 물질 연구에 관심있는 대학원생과 실험물리화학, 소재합성 또는  광전자/센서소자를 전공한 post-doc을 모집 중입니다. (2024)

Available position(2024년 2학기)

         : + 대학원생 + 학부연구생 + 박사후연구원

              + 테크니션(석사학위이상) 

We have open positions for passionate graduate students, technicians, and postdocs with backgrounds in chemistry, physics, chemical engineering, material science, and electrical engineering.

copyright © 2020 KSJ lab

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