Zn2SbN3: Growth and Characterization of a Metastable Photoactive Semiconductor

Elisabetta Arca, Stephan Lany, Allison Mis, Patricia Dippo, Adele Tamboli, William Tumas, Glenn Teeter, Andriy Zakutayev, Bor-Rong Chen, Wenhao Sun, Michael Toney, Laura Schelhas, Gerbrand Ceder, John Perkins, Jonathan Partridge, Aaron Holder

Research output: Contribution to journalArticlepeer-review

35 Scopus Citations

Abstract

Ternary nitride semiconductors with wurtzite-derived crystal structures are an emerging class of materials for optoelectronic applications compatible with GaN and related III-V compounds. In particular, II-IV-V2 materials such as ZnSnN2 and ZnGeN2 have been very actively studied for applications in photovoltaics and light emitting devices. However, many other possible wurtzite-derived ternary nitrides have not been reported, and hence their optical and electrical properties remain unknown. Here, we report on Zn2SbN3-the first Sb-based nitride and a photoactive semiconductor. Surprisingly, Zn2SbN3 contains Sb in the highest (5+) oxidation state, and in the unusual tetrahedral coordination. This new Zn2SbN3 material has a solar-matched 1.6-1.7 eV band gap and shows near-band-edge room-temperature photoluminescence, demonstrating its promise as an optoelectronic semiconductor. Finally, Zn2SbN3 can be synthesized at low temperature under a wide range of processing conditions, despite being metastable according to theoretical calculations. All these results, as well as the band position measurements, indicate that Zn2SbN3 is a promising emerging semiconductor for applications as an absorber in photovoltaic-and photoelectrochemical solar cells.

Original languageAmerican English
Pages (from-to)1669-1674
Number of pages6
JournalMaterials Horizons
Volume6
Issue number8
DOIs
StatePublished - Oct 2019

Bibliographical note

Publisher Copyright:
© 2019 The Royal Society of Chemistry.

NREL Publication Number

  • NREL/JA-5K00-73276

Keywords

  • combinatorial sputtering
  • solar absorber
  • ternary nitrides

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