Low-dimensional perovskites for light-emitting applications: What do we need and how to make it?
Tuesday, May 25, 2021
11 a.m. – 11:45 a.m. EDT
Jawaher Almutlaq, Postdoctoral Fellow
Research Laboratory of Electronics
To break free of the limitations imposed by three-dimensional (3D) perovskites, such as their lackluster stability, researchers have opened new frontiers into lower-dimensional perovskite derivatives. Thanks to advances in solvent-based synthesis methods, zero-dimensional (0D) inorganic perovskites, mainly Cs4PbBr6, have recently reemerged in various forms (from single crystals to nanocrystals) as materials with properties that bridge organic molecules and inorganic semiconductors.
The first part of this talk covers the controversy regarding the origin of emission in zero-dimensional perovskites (0D), Cs4PbBr6 and Cs4PbI6, through a comparative analysis between 0D and three-dimensional (3D) perovskites.
Then, Almutlaq will address the shortcoming of lead-based perovskites in terms of toxicity and stability, motivated by the high demand for sustainable materials with analogous electrical and structural properties. Finally, Almutlaq will share the recent work on CsMnBr3 NCs, which reveals an intense red PL peak, a high PLQY with a remarkable excitation spectrum and surprisingly short lifetime. This work paves the way for finding sustainable materials for the next generation of light-emitting applications.
Attendees can join and participate in the series via Zoom. Meeting ID#: 860 986 455.