188. controlled homo-epitaxial growth of hybrid perovskites

Department: NanoEngineering
Faculty Advisor(s): Sheng Xu

Primary Student
Name: Yusheng Lei
Email: yul543@ucsd.edu
Phone: 858-361-1873
Grad Year: 2020

Organic-inorganic hybrid perovskites have demonstrated tremendous potential for the nextgeneration electronic and optoelectronic devices due to their remarkable carrier dynamics. Current studies have been focusing on polycrystals, since controlled growth of device compatible single crystals is extremely challenging. Here, we report the first epitaxial growth of single crystal CH3NH3PbBr3 with controlled thickness, locations, morphologies, and orientations, using combined strategies of advanced microfabrication, homoepitaxy, and low temperature solution method. The growth is found to follow a layer-by-layer model. We fabricated a light emitting diode array, with each CH3NH3PbBr3 crystal as a single pixel, with enhanced quantum efficiencies than its polycrystalline counterparts.

Industry Application Area(s)
Electronics/Photonics | Energy/Clean technology | Materials

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