Synthesis, Light Emission, and Lasing in Organic Semiconductor-Incorporated Perovskite (OSiP)

Halide perovskites are exciting new semiconductors that show a great promise in low cost and high-performance optoelectronics devices. However, the poor stability is limiting their practical use. In this talk, I will present a molecular approach to the synthesis of a new family of hybrid material - Organic Semiconductor-incorporated Perovskite (OSiP), which are more versatile and intrinsically stable. Energy transfer and charge transfer between adjacent organic and inorganic layers are extremely fast and efficient, owing to the atomically flat interface and short interlayer distance. In addition, the rigid conjugated ligand design dramatically enhances their chemical stability, suppresses solid-state ion diffusion, and modulates electron-phonon coupling, making them useful in many applications, particularly in solid-state lighting. Using these stable hybrid materials, we demonstrate efficient light emission and amplification in single crystalline nanostructures, epitaxial heterostructures, and polycrystalline thin films.

Speaker: Letian Dou, Purdue University