In Situ Intercalation Dynamics in Inorganic–Organic Layered Perovskite Thin Films


The properties of layered inorganic semiconductors can be manipulated by the insertion of foreign molecular species via a process known as intercalation. Understanding the intercalation process at a molecular level and how it varies with the type/size of organic moieties, nature of host and nucleation/growth into 1D, 2D and 3D quantum entities is essential for the realization of well-ordered & uniform device quality Inorganic-Organic (IO) hybrid films for IO hybrid based optoelectronic and photovoltaic devices. Inorganic-organic materials are a unique class of materials that combine the useful properties of these two individual entities into a single molecular framework. In the present study, we investigate the phenomenon of organic moiety intercalation in layered metal-halide inorganic semiconductors, leading to the formation of IO perovskites, also considered as natural multiple quantum wells (MQWs). Here the in situ dynamic processes of structural phases and room temperature optical exciton evolutions and the direction of intercalation are explored. This paper has been selected as " Editor Choice Article" for ACS Applied Materials and Interfaces journal.

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Shahab Ahmad and Dr. G. Vijaya Prakash

Department of Physics