Light-Emission and Lasing in Organic Semiconductor-incorporated Perovskites (OSiP)
Letian Dou a
a Purdue University, West Lafayette, IN, 47907, USA
Materials for Sustainable Development Conference (MATSUS)
Proceedings of MATSUS Spring 2024 Conference (MATSUS24)
#2Dpero - 2D perovskites: chemical versatility, photophysics and applications
Barcelona, Spain, 2024 March 4th - 8th
Organizers: Claudio Quarti and Yana Vaynzof
Invited Speaker, Letian Dou, presentation 007
DOI: https://doi.org/10.29363/nanoge.matsus.2024.007
Publication date: 18th December 2023

Organic-inorganic hybrid halide perovskites are exciting new semiconductors that show great promising in low cost and high-performance optoelectronics devices including solar cells, LEDs, photodetectors, etc. 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 organic-inorganic hybrid material - Organic Semiconductor-incorporated Perovskite (OSiP). Energy transfer and charge transfer between adjacent organic and inorganic layers are extremely fast and efficient, owing to the atomically-flat interface and ultra-small interlayer distance. Furthermore, this rigid conjugated ligand design dramatically enhances materials’ chemical stability and suppresses solid-state ion migration and diffusion, making them promising for real-world applications. Using this stable hybrid materials, we demonstrate the fabrication of high quality polycrystalline thin films and highly stable and efficient LED devices with suppressed ion migration and improved external quantum efficiency, color purity, and operational lifetime. Optically-driven nano lasers will be discussed briefly as well.

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