Unconventional Solar Solutions with Hybrid Perovskite Materials by Prof Lioz Etgar
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Join us in the IAS STEM Graduate Colloquium by Prof Lioz Etgar from the Hebrew University of Jerusalem.
About the talk
Recent discoveries have revealed a breakthrough in the field using inorganic-organic hybrid layers called perovskites as the light harvester in the solar cell. The inorganic-organic arrangement is self-assembled as alternate layers, being a simple, low-cost procedure. These organic-inorganic hybrids promise several benefits not delivered by the separate constituents.
In this talk I will present several topics related to hybrid perovskite synthesis and devices. I will show our recent results on fully printable mesoporous indium tin oxide (ITO) perovskite solar cell. In this structure, the perovskite is not forming a separate layer but fills the pores of the triple-oxide structure. One of the advantages of this solar cell structure is the transparent contact (mesoporous ITO) which permits the use of this cell structure in a bifacial configuration without the need for additional layers or thinner counter electrode. In addition to their application in photovoltaics, metal halide perovskites exhibit piezoelectric properties attributed to polarisation and the breaking of centrosymmetry in PbX6 pyramids. In this section, I will outline our recent investigation into the piezoelectric response of quasi-2D perovskites. Utilizing Piezo-response force microscopy measurements, we characterised these perovskites and illustrated their potential functionality in pressure sensors.
About Our Speaker
Prof Lioz Etgar was the first to demonstrate the possibility of working with perovskite as a light harvester and hole conductor at the same time, its multiple applications and prospects in solar cells. A pioneer in his field, Prof Etgar is pushing the boundaries of solar cell efficiency and reinventing the ways they are used across industries and everyday situations. To achieve this level of flexibility in perovskite solar cells, Prof Etgar’s research interests cover a wide variety of topics from improving photovoltaic parameters, to synthesizing hybrid materials at low temperatures. He recently won the prestigious Krill prize by the Wolf Foundation, solidifying the promise he showed in early years of professorship, when he received a Marie Curie Fellowship and won the Wolf Prize for young scientists. In addition to his academic career, Prof. Etgar has founded SOLRA PV focusing on applications for IoT devices.