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Title: Hydrogen-related complexes in Li-diffused ZnO single crystals

Abstract

Zinc oxide (ZnO) is a wide band gap semiconductor and a potential candidate for next generation white solid state lighting applications. In this work, hydrogen-related complexes in lithium diffused ZnO single crystals were studied. In addition to the well-known Li-OH complex, several other hydrogen defects were observed. When a mixture of Li2O and ZnO is used as the dopant source, zinc vacancies are suppressed and the bulk Li concentration is very high (>1019 cm-3). In that case, the predominant hydrogen complex has a vibrational frequency of 3677 cm-1, attributed to surface O-H species. When Li2CO3 is used, a structured blue luminescence band and O-H mode at 3327 cm-1 are observed at 10K. These observations, along with positron annihilation measurements, suggest a zinc vacancy–hydrogen complex, with an acceptor level 0.3 eV above the valence-band maximum. In conclusion, this relatively shallow acceptor could be beneficial for p-type ZnO.

Authors:
 [1];  [1]; ORCiD logo [1]; ORCiD logo [1]
  1. Washington State Univ., Pullman, WA (United States)
Publication Date:
Research Org.:
Washington State Univ., Pullman, WA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
OSTI Identifier:
1325779
Alternate Identifier(s):
OSTI ID: 1267528; OSTI ID: 1489138
Grant/Contract Number:  
FG02-07ER46386
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 120; Journal Issue: 3; Journal ID: ISSN 0021-8979
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; zinc; II-VI semiconductors; doping; vacancies; photoluminescence

Citation Formats

Corolewski, Caleb D., Parmar, Narendra S., Lynn, Kelvin G., and McCluskey, Matthew D. Hydrogen-related complexes in Li-diffused ZnO single crystals. United States: N. p., 2016. Web. doi:10.1063/1.4959106.
Corolewski, Caleb D., Parmar, Narendra S., Lynn, Kelvin G., & McCluskey, Matthew D. Hydrogen-related complexes in Li-diffused ZnO single crystals. United States. doi:10.1063/1.4959106.
Corolewski, Caleb D., Parmar, Narendra S., Lynn, Kelvin G., and McCluskey, Matthew D. Thu . "Hydrogen-related complexes in Li-diffused ZnO single crystals". United States. doi:10.1063/1.4959106. https://www.osti.gov/servlets/purl/1325779.
@article{osti_1325779,
title = {Hydrogen-related complexes in Li-diffused ZnO single crystals},
author = {Corolewski, Caleb D. and Parmar, Narendra S. and Lynn, Kelvin G. and McCluskey, Matthew D.},
abstractNote = {Zinc oxide (ZnO) is a wide band gap semiconductor and a potential candidate for next generation white solid state lighting applications. In this work, hydrogen-related complexes in lithium diffused ZnO single crystals were studied. In addition to the well-known Li-OH complex, several other hydrogen defects were observed. When a mixture of Li2O and ZnO is used as the dopant source, zinc vacancies are suppressed and the bulk Li concentration is very high (>1019 cm-3). In that case, the predominant hydrogen complex has a vibrational frequency of 3677 cm-1, attributed to surface O-H species. When Li2CO3 is used, a structured blue luminescence band and O-H mode at 3327 cm-1 are observed at 10K. These observations, along with positron annihilation measurements, suggest a zinc vacancy–hydrogen complex, with an acceptor level 0.3 eV above the valence-band maximum. In conclusion, this relatively shallow acceptor could be beneficial for p-type ZnO.},
doi = {10.1063/1.4959106},
journal = {Journal of Applied Physics},
number = 3,
volume = 120,
place = {United States},
year = {2016},
month = {7}
}

Journal Article:
Free Publicly Available Full Text
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Cited by: 6 works
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Figures / Tables:

Figure 1. Figure 1.: SIMS profile of ZnO before and after annealing in the Li2O:ZnO powder mixture.

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    Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.