Synthesis of LaWN3 Nitride Perovskite with Polar Symmetry

Kevin Talley, Craig Perkins, David Diercks, Geoff Brennecka, Andriy Zakutayev

Research output: Contribution to journalArticlepeer-review

42 Scopus Citations

Abstract

Oxide materials with the perovskite structure have been used in sensors and actuators for half a century, and halide perovskites transformed photovoltaics research in the past decade. Nitride perovskites have been computationally predicted to be stable, but few have been synthesized, and their properties remain largely unknown. We synthesized and characterized a nitride perovskite lanthanum tungsten nitride (LaWN3) in the form of oxygen-free sputtered thin films, according to spectroscopy, scattering, and microscopy techniques. We report a large piezoelectric response measured with scanning probe microscopy that together with synchrotron diffraction confirm polar symmetry of the perovskite LaWN3. Our LaWN3 synthesis should inspire growth of other predicted nitride perovskites, and measurements of their properties could lead to functional integration with nitride semiconductors for microelectromechanical devices.

Original languageAmerican English
Pages (from-to)1488-1491
Number of pages4
JournalScience
Volume374
Issue number6574
DOIs
StatePublished - 17 Dec 2021

Bibliographical note

Publisher Copyright:
© 2021 American Association for the Advancement of Science. All rights reserved.

NREL Publication Number

  • NREL/JA-5K00-75605

Keywords

  • ferroelectric
  • LaWN3
  • nitride
  • perovskite

Fingerprint

Dive into the research topics of 'Synthesis of LaWN3 Nitride Perovskite with Polar Symmetry'. Together they form a unique fingerprint.

Cite this