For NYSS APS information, contact:
Bruce White

Halide perovskites: what makes them suitable for photovoltaics and what are their problems?

Walter R. L. Lambrecht

Department of Physics, Case Western Reserve University

The halide perovskites, in particular hybrid organic/inorganic lead based perovskites have attracted
great attention for solar cell applications. They are easy to fabricate and have high photo-electric conversion efficiencies but suffer from stability problems, the occurrence of competing structures, the presence of toxic lead. In this talk I will review some of the physical properties that make them attractive for solar cells and what makes them more broadly of interest from a physics of materials point of view. I will focus on their electronic band structure features, phonons, excitonic binding energy and lattice distortion modes and will describe progress toward lead-free halides.

For program, contact one of the organizers: For local information, contact:
Dr. Hao Zeng – haozeng@buffalo.edu
Dr. Peihong Zhang – pzhang3@buffalo.edu
Dr. Uttam Singisetti - uttamsin@buffalo.edu
Ms. Tracy Gasinsky - tracygas@buffalo.edu
Phone: 716-645-3629
Department of Physics, Buffalo, NY