Improving the chemical potential of nitrogen to tune the electron density and mobility of ZnSnN2

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Author(s)

  • Fan Ye
  • Qian-Qian Chen
  • Xing-Min Cai
  • Yi-Zhu Xie
  • Xiu-Fang Ma
  • Dong-Ping Zhang
  • Ping Fan

Detail(s)

Original languageEnglish
Pages (from-to)4314-4320
Journal / PublicationJournal of Materials Chemistry C
Volume8
Issue number13
Online published29 Feb 2020
Publication statusPublished - 7 Apr 2020

Abstract

To meet device applications, it is essential to fabricate nondegenerate ZnSnNwith higher mobility. Herein, the chemical potential of nitrogen was improved under Zn-rich sputtering conditions and nondegenerate ZnSnN2 with mobility higher than 20 cm2 V−1 s−1 was successfully fabricated. The properties of the samples were characterized. The obtained ZnSnN2 is wurstite. Band conduction is observed in the range 300–100 K and nearest neighbour hopping is observed in the range 100–70 K. The forbidden band gap is about 1.43 eV and Sn substituting Zn is the major donor, whose ionization energy is 34.6 meV. Improving the chemical potential of nitrogen under Zn-rich conditions effectively changes the off-stoichiometry of ZnSnN2 and unintentionally increases oxygen doping, which finally leads to a decrease in electron density and an increase in mobility.

Citation Format(s)

Improving the chemical potential of nitrogen to tune the electron density and mobility of ZnSnN2. / Ye, Fan; Chen, Qian-Qian; Cai, Xing-Min; Xie, Yi-Zhu; Ma, Xiu-Fang; Vaithinathan, Karthikeyan; Zhang, Dong-Ping; Fan, Ping; Roy, V. A. L.

In: Journal of Materials Chemistry C, Vol. 8, No. 13, 07.04.2020, p. 4314-4320.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal