KOSEN 한인과학기술자네트워크

Next-Generation Optoelectronics 

Functional Materials for Optoelectronics

(1) organic/ polymeric materials (polymeric acid/ base, organic conjugated small molecules/ conducting polymers),

(2) nanomaterials (graphene/ carbon nanotubes/ quantum dots),

(3) organic-inorganic hybrid materials (various kinds of metal halide perovskites)

modified and employed into optoelectronic applications for energy conversion and displays

•   Metal Halide Perovskites

Metal halide perovskite materials have been considered as highly promising solution-processable alternative materials to conventional inorganic or organic semiconductors for optoelectronic applications. Excellent optoelectronic properties including long charge carrier lifetimes and diffusion lengths and high absorption coefficients have enabled the strong potential of perovskite based solar cells and LEDs. Also, as a light source with narrow full width half maximums (FWHM), metal halide perovskites are a promising future emitter material for next-generation high color-purity displays.

        - Crystal Growth

© T.-H. Han et al. Nature Commun. 10, 520 (2019)

T.-H. Han et al. Adv. Mater. 1803515 (2019)

        - Material Design

• Solution-Processable Organic LEDs

© T.-H. Han et al. SCIENCE Adv. 2, e1601428 (2016)

T.-H. Han et al. Chem. Eur. J. 20, 8260-8264 (2014)

        - Conducting Polymers

© T.-H. Han et al. Nature Photon. 6, 105-110 (2012)

T.-H. Han et al. Adv. Mater. 24, 1487-1493 (2012)

• Felxible/ Stretchable Devices

        - Flexible Electrodes

© T.-H. Han et al. Nature Photon. 6, 105-110 (2012)

T.-H. Han et al. Angew. Chem. Int. Ed. 55, 6197-6201 (2016)

T.-H. Han et al. NPG Asia Mater. 8, e303 (2016)

T.-H. Han et al. Mater. Sci. Eng. R Rep. 118, 1-43 (2017)