Research

Research Overview

Our research focuses on the precise molecular design, synthesis, and characterization of small-molecule and polymeric organic semiconductors to develop tailored π-conjugated electronic materials. These materials are applied to diverse organic electronic devices—including transistors, solar cells, and displays—where we investigate the causal relationships among structure, properties, and performance. In addition, we integrate photophysical analyses to elucidate key physical phenomena such as charge transport, exciton dynamics, phase separation, and molecular packing within devices. Through this integrated approach spanning synthesis, device application, and advanced characterization, we aim to establish practical design principles for next-generation organic electronic devices with high performance, enhanced stability, and excellent processability. 

Representative Publications

[1]    Seung Un Ryu,† Jaehyoung Koo,† Taehyun Kim, Chanhyeok Kim, Taiho Park, Minjun Kim* "Regioselective Fluorination of Thiophene-

Based Heterocycles for Modulation of Multiple Physical Properties in Organic Semiconductors" Org. Lett. 2025, 27(19), 4825.

[2]    Minjun Kim,† Seung Un Ryu, Sang Ah Park, Kyoungwon Choi, Taehyun Kim, Dasol Chung, Taiho Park* "Donor–acceptor‐conjugated 

polymer for high‐performance organic field‐effect transistors: a progress report" Adv. Funct. Mater. 2020, 30(20), 1904545.

[3]    Minjun Kim, Won-Tae Park, Seung Un Ryu, Sung Y Son, Junwoo Lee, Tae Joo Shin,* Yong-Young Noh,* Taiho Park* "Improving the 

electrical connection of N-type conjugated polymers through fluorine-induced robust aggregation" Chem. Mater. 2019, 31(13), 4864.