Solution-Processable Optoelectronic Materials

Organics, perovskites, and quantum dots have been intensely studied as solution-processable semiconductors because of their advantages such as light-weight, flexibility, low-cost and large-area processing. However, each material has distinct advantages and disadvantages, so it requires the development of hybrid materials to overcome limitations of each material and utilize the advantages. Based on the research experience in organic, perovskite, and quantum dot materials for optoelectronic applications, we aim to develop new hybrid materials for next-generation energy devices by overcoming limitations of each materials.

Surface Engineering

Optoelectronic devices have large surface/interface area where defects can be easily formed. The performance of optoelectronic devices highly depends on the surface/interface quality in the devices. We study three perspectives of surface engineering: 1) Adjustment of energy levels by inducing dipole moments between a charge transport layers and an active layer, 2) Reduction of non-radiative recombination loss by passivating defects, 3) Adjustment of compatibility through control over hydrophobic/hydrophilic characteristics.

Hybrid Materials

Existing organic, perovskite, quantum dot materials have distinct advantages and disadvantages, so the development of hybrid materials should be required to make a breakthrough in optoelectronic applications by overcoming limitations of each material. Recently, quantum-dot-perovskire, organic-perovskite, quantum-dot-organic hybrid materials have been developed for optoelectroic applications, achieving excellent performance.

Applications

Light-Emitting Diodes

Solar cells

Photodetectors