Soft Optoelectronic and Organic / Organic–Inorganic Hybrid Semiconductor Materials

Materials Science × Process Engineering × Advanced Electronics

Since polymer semiconductor research was recognized by the Nobel Prize in 2000, organic polymer semiconductors have become a major research focus in organic chemistry and materials science. With rapid advances in molecular design and materials engineering, the charge carrier mobility of polymer semiconductors has now exceeded 10 cm²/V·s, approaching and in some cases rivaling conventional inorganic silicon-based semiconductors. Combined with intrinsic advantages such as mechanical flexibility, solution processability, low cost, and large-area fabrication, polymer semiconductors exhibit strong potential for applications in soft optoelectronics and next-generation electronic systems. Nevertheless, achieving high device performance while maintaining process compatibility and scalability remains a critical challenge.

Our laboratory focuses on conjugated polymers, perovskite quantum dots, and organic/organic–inorganic hybrid soft semiconductor materials, with research activities organized into three interconnected directions:

(1) Materials Science

We emphasize molecular design, doping strategies, energy-level engineering, and nanoscale morphology control of soft semiconductor materials. By systematically investigating the relationships among molecular structure, nanoscale morphology, optical properties, and electrical behavior, we aim to establish fundamental structure–property correlations. In particular, we focus on light–charge–materials interaction mechanisms, combining optical characterization, charge carrier dynamics, energy-level modulation, and interfacial engineering to develop a physics-based and systematic understanding linking material design to device functionality.

(2) Process Engineering

We develop solution-processable thin-film technologies for polymer and hybrid semiconductor materials, including studies of phase separation behavior, process optimization, and interfacial engineering. These efforts aim to enhance processing stability and reproducibility on large-area, low-temperature, and flexible substrates, thereby improving the feasibility of translating laboratory-scale materials into practical applications.

(3) Advanced Electronic Devices

At the device level, our research extends to lasers, photodetectors, soft optoelectronic devices, and neuromorphic/synaptic optoelectronic devices. We place particular emphasis on ultralow-power operation, the integration of in-sensor computing and in-memory computing, and biomimetic electronic functionalities to address the demands of next-generation intelligent electronics and artificial neural systems.

Overall, through the co-design of material synthesis, optoelectronic physical analysis, hybrid interfacial engineering, and device integration, our laboratory seeks to overcome the energy-consumption and mechanical limitations of conventional silicon-based electronics. We aim to establish key material design principles and device implementation strategies for next-generation low-power, flexible, and intelligent optoelectronic and neuromorphic electronic systems.