Chemistry - Physics Colloquium

09/19/2019 3:30 pm
103 Physical Sciences I



Bayrammurad Saparov
Department of Chemistry
University of Oklahoma

Hybrid Organic-Inorganic Halides:Crystal Chemistry, Properties and Applications

Abstract: Our group targets preparation, single crystal growth, computational studies, and characterization of low-cost hybrid organic-inorganic and all-inorganic halides for prospective optoelectronic applications. In this general talk, I will overview the rich structural chemistry, physical properties and prospective applications of several brand-new hybrid organic-inorganic and all-inorganic halide materials. The unprecedented control over structural dimensionality, distortions and tunable chemical compositions allows for fine-tuning of physical properties of halides including their optical band gaps, transport and magnetic properties. In our group, lessons learned from literature are applied to a expand the halides family beyond Pb/Sn-based perovskites. The bird’s eye view will be concluded by our group’s recent results on (mostly) non-perovskite halides, which demonstrate ultrabright room-temperature luminescence with quantum yield values approaching unity.

Bio: Dr. Bayram Saparov is an Assistant Professor of Chemistry at the University of Oklahoma. Dr. Saparov’s inorganic materials chemistry research group focuses on preparation of next-generation halide and chalcogenide materials for optical and electronic applications. Dr. Saparov, originally from Mary, Turkmenistan, received his undergraduate Diploma from Lomonosov Moscow State University in Russia in 2006. Then, he attended the University of Delaware to get his PhD in Inorganic Solid-State Chemistry. His PhD research was on the preparation and structural studies of Zintl pnictides. After graduating in 2011, he spent 3 years as a postdoc at Oak Ridge National Laboratory working on iron-based superconductors and permanent magnets. He continued his postdoctoral training with Dr. David Mitzi at Duke University as a DOE SunShot Postdoctoral fellow from 2014 to 2016. During this time, he synthesized and characterized new halide and chalcogenide semiconductors for solar cell applications. Dr. Saparov has a 15-year working experience in the fields of solid-state and materials chemistry, which has resulted in 63 published research and review articles in reputable journals. His current research interests include preparation of halide-based phosphor materials, development of materials for space solar applications and semiconducting and magnetic properties of new chalcogenide materials. He is a recipient of a number of awards recognizing his scholarly work including the 2017 Ralph E. Powe Junior Faculty Enhancement Award from Oak Ridge Associated Universities (ORAU). His research group at OU is currently funded by grants from OCAST, DOE and NASA.