Manipulating the Thermoelectric Properties and Spin Dynamics of 2D-and 3D-Organic-Inorganic Hybrid Perovskites
Technical Report,01 Apr 2018,30 Sep 2019
UNIVERSITY OF UTAH SALT LAKE CITY SALT LAKE CITY United States
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A key parameter in the development of spintronic and electronic technologies is the assembly of new materials or cleverly engineering interfaces between existing materials. As part of our research efforts, we developed a synthesis approach for the fabrication of magnetic organic-inorganic hybrid perovskites for use in spintronic applications. We also investigated the thermoelectric properties of methylammonium tin iodide CH3NH3SnI3 as a function of morphology, doping, and light stress. During our thermoelectric studies, we faced critical challenges in clearly elucidating how changes in morphology due to different processing conditions affect the thermoelectric properties of CH3NH3SnI3. This prompted us to develop an analytical tool which we dubbed mosaicity factor that allows us to accurately determine the degree of orientation of different crystallites within a thin film. By developing this tool, we can then correlate the thermoelectric properties of CH3NH3SnI3 to a particular crystallite within the thin film. Last, we investigated the role of hydrogen bonding interactions in organic-inorganic hybrid perovskites when alkyl and -conjugated crossslinkers are introduced into the structure as a means to impart crystal stability toward light and water degradation.
- Electricity and Magnetism
- Electrical and Electronic Equipment