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Title: Hybrid functional study of native point defects and impurities in ZnGeN2

Abstract

Using hybrid density functional theory, we explore the properties of native point defects and hydrogen and oxygen impurities in ZnGeN2, a wide-band-gap semiconductor that is promising for applications in electronic and optoelectronic devices. We find that cation antisites have the lowest formation energies amongst all of the native point defects for a wide range of chemical potential conditions. Yet, native point defects must not act as sources of doping. Unintentional n-type conductivity in ZnGeN2 must be attributed to impurities: substitutional oxygen on a nitrogen site and interstitial hydrogen act as donors.

Authors:
 [1];  [1];  [1]; ORCiD logo [1]
  1. Univ. of California, Santa Barbara, CA (United States)
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC); Univ. of California, Oakland, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC); Army Research Office (ARO)
OSTI Identifier:
1543842
Alternate Identifier(s):
OSTI ID: 1420664
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 122; Journal Issue: 19; Journal ID: ISSN 0021-8979
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Adamski, Nicholas L., Zhu, Zhen, Wickramaratne, Darshana, and Van de Walle, Chris G. Hybrid functional study of native point defects and impurities in ZnGeN2. United States: N. p., 2017. Web. doi:10.1063/1.4999790.
Adamski, Nicholas L., Zhu, Zhen, Wickramaratne, Darshana, & Van de Walle, Chris G. Hybrid functional study of native point defects and impurities in ZnGeN2. United States. https://doi.org/10.1063/1.4999790
Adamski, Nicholas L., Zhu, Zhen, Wickramaratne, Darshana, and Van de Walle, Chris G. Wed . "Hybrid functional study of native point defects and impurities in ZnGeN2". United States. https://doi.org/10.1063/1.4999790. https://www.osti.gov/servlets/purl/1543842.
@article{osti_1543842,
title = {Hybrid functional study of native point defects and impurities in ZnGeN2},
author = {Adamski, Nicholas L. and Zhu, Zhen and Wickramaratne, Darshana and Van de Walle, Chris G.},
abstractNote = {Using hybrid density functional theory, we explore the properties of native point defects and hydrogen and oxygen impurities in ZnGeN2, a wide-band-gap semiconductor that is promising for applications in electronic and optoelectronic devices. We find that cation antisites have the lowest formation energies amongst all of the native point defects for a wide range of chemical potential conditions. Yet, native point defects must not act as sources of doping. Unintentional n-type conductivity in ZnGeN2 must be attributed to impurities: substitutional oxygen on a nitrogen site and interstitial hydrogen act as donors.},
doi = {10.1063/1.4999790},
journal = {Journal of Applied Physics},
number = 19,
volume = 122,
place = {United States},
year = {Wed Nov 15 00:00:00 EST 2017},
month = {Wed Nov 15 00:00:00 EST 2017}
}

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Cited by: 18 works
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