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Hybrid Inorganic-Organic Perovskite Glasses

preprint
submitted on 09.03.2020, 15:40 and posted on 10.03.2020, 05:45 by Bikash Kumar Shaw, Ashlea R. Hughes, Maxime Ducamp, David A. Keen, François-Xavier Coudert, Frederic Blanc, Thomas Bennett

Hybrid perovskites occupy a prominent position within solid-state materials chemistry due to their (e.g.) ionic transport, ferroelectric and multiferroic properties. Here we show that a series of [TPrA][M(Dca)3] perovskites (TPrA = tetrapropylammonium cation; Dca = dicyanamide anion; M = Mn, Fe, Co) melt below 300 °C. A combined experimental-computational approach reveal the melting mechanism, and demonstrates that the hybrid perovskites form glasses upon melt quenching which largely retain the inorganic-organic bonding of the crystalline phase. The very low thermal conductivities of these glasses (~ 0.2 W m-1 K-1), moderate electrical conductivities (10-2 – 10-4 S m-1) and thermo-mechanical properties reminiscent of polymeric materials identify them as a new family of functional glass-formers.

History

Email Address of Submitting Author

tdb35@cam.ac.uk

Institution

University of Cambridge

Country

United Kingdom

ORCID For Submitting Author

0000-0003-3717-3119

Declaration of Conflict of Interest

No conflict of interest

Version Notes

Version One

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