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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 Li{sub 2}O and ZnO is used as the dopant source, zinc vacancies are suppressed and the bulk Li concentration is very high (>10{sup 19 }cm{sup −3}). In that case, the predominant hydrogen complex has a vibrational frequency of 3677 cm{sup −1}, attributed to surface O-H species. When Li{sub 2}CO{sub 3} is used, a structured blue luminescence band and O-H mode at 3327 cm{sup −1} are observed at 10 K. 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. This relatively shallow acceptor could be beneficial for p-type ZnO.

Authors:
 [1]; ;  [2];  [1];  [3]
  1. Materials Science and Engineering Program, Washington State University, Pullman, Washington 99164-2814 (United States)
  2. Center for Materials Research, Washington State University, Pullman, Washington 99164-2814 (United States)
  3. (United States)
Publication Date:
OSTI Identifier:
22597770
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 120; Journal Issue: 3; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ANNIHILATION; CONCENTRATION RATIO; DEFECTS; DOPED MATERIALS; HYDROGEN; HYDROGEN COMPLEXES; LITHIUM; LITHIUM CARBONATES; LITHIUM OXIDES; LUMINESCENCE; MIXTURES; MONOCRYSTALS; POSITRONS; SEMICONDUCTOR MATERIALS; SURFACES; VACANCIES; VALENCE; ZINC; ZINC OXIDES

Citation Formats

Corolewski, Caleb D., Parmar, Narendra S., Lynn, Kelvin G., McCluskey, Matthew D., E-mail: mattmcc@wsu.edu, and Department of Physics and Astronomy, Washington State University, Pullman, Washington 99164-2814. 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., E-mail: mattmcc@wsu.edu, & Department of Physics and Astronomy, Washington State University, Pullman, Washington 99164-2814. 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., McCluskey, Matthew D., E-mail: mattmcc@wsu.edu, and Department of Physics and Astronomy, Washington State University, Pullman, Washington 99164-2814. Thu . "Hydrogen-related complexes in Li-diffused ZnO single crystals". United States. doi:10.1063/1.4959106.
@article{osti_22597770,
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., E-mail: mattmcc@wsu.edu and Department of Physics and Astronomy, Washington State University, Pullman, Washington 99164-2814},
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 Li{sub 2}O and ZnO is used as the dopant source, zinc vacancies are suppressed and the bulk Li concentration is very high (>10{sup 19 }cm{sup −3}). In that case, the predominant hydrogen complex has a vibrational frequency of 3677 cm{sup −1}, attributed to surface O-H species. When Li{sub 2}CO{sub 3} is used, a structured blue luminescence band and O-H mode at 3327 cm{sup −1} are observed at 10 K. 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. 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 = {Thu Jul 21 00:00:00 EDT 2016},
month = {Thu Jul 21 00:00:00 EDT 2016}
}