Determination of adsorption-controlled growth windows of chalcogenide perovskites

Filippone, Stephen A.; Sun, Yi-Yang; Jaramillo, Rafael

Determination of adsorption-controlled growth windows of chalcogenide perovskites

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Author(s)

Filippone, Stephen A.

•

Sun, Yi-Yang

•

Jaramillo, Rafael

Date Issued

March 2018

Journal

MRS Communications

Publisher

Cambridge University Press (CUP)

Citation

Version

Author's final manuscript

Abstract

Ternary sulfides and selenides in the distorted-perovskite structure (“chalcogenide perovskites”) are predicted by theory to be semiconductors with a band gap in the visible-to-infrared and may be useful for optical, electronic, and energy conversion technologies. Here we use computational thermodynamics to predict the pressure–temperature phase diagrams for select chalcogenide perovskites. Our calculations incorporate formation energies calculated by density functional theory, and empirical estimates of heat capacities. We highlight the windows of thermodynamic equilibrium between solid chalcogenide perovskites and the vapor phase at high temperature and very low pressure. These results can guide the adsorption-limited growth of ternary chalcogenides by molecular beam epitaxy.

MIT Department

Massachusetts Institute of Technology. Department of Materials Science and Engineering

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Creative Commons Attribution-Noncommercial-Share Alike

http://creativecommons.org/licenses/by-nc-sa/4.0/

Persistent DSpace Link

https://hdl.handle.net/1721.1/126213

DOI of Published Version

https://doi.org/10.1557/mrc.2018.10