Electroluminescent Materials and Devices

Fundamental understanding the surface forces and dielectric properties of nanomaterials gives rise to engineer their optoelectronic characteristics. In our group, we aim to develop new light-​emitting technologies that yield high-​efficiency electroluminescence (EL) based on nanomaterial and organic semiconductors. For example, an emerging category of these materials is the organic-​inorganic hybrid lead halide perovskites (OIHPs) nanocrystals, which exhibit the narrowest emission bandwidth among all known semiconductor materials. We are one of the pioneering groups in the world investigating the colloidal OIHP nanocrystal-​based LEDs. In particular, we focus on the 2D forms of the nanocrystals, namely, the colloidal quantum wells (CQWs) that exhibit a high degree of quantum or dielectric confinement.

Other activities in this field include new organic and polymer semiconductors that give rise to ultraflexible and environmentally friendly LEDs for skin eleectronics. In addition, our group offers a platform for demonstrating thin-​film EL devices based on organic and quantum dot materials. We work closely with academic and industrial partners to develop new organic or quantum dot com-​pounds for high-​efficiency thin-​film LEDs.

Key Publications:

• ACS Nano 10(10), 9720, (2016). external page link
• Nano Lett. 17(9), 5277, (2017). external page link
• Sci. Adv. 7(15), eabd1794 (2021). external page link
  
• J. Am. Chem. Soc. 144, 13 (2022). external page link
• Nat. Commun. 13, 2106 (2022). external page link