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Title: Acceptors in ZnO

Abstract

Zinc oxide (ZnO) has potential for a range of applications in the area of optoelectronics. The quest for p-type ZnO has focused much attention on acceptors. In this paper, Cu, N, and Li acceptor impurities are discussed. Experimental evidence shows that these point defects have acceptor levels 3.2, 1.5, and 0.8 eV above the valence-band maximum, respectively. The levels are deep because the ZnO valence band is quite low compared to conventional, non-oxide semiconductors. Using MoO2 contacts, the electrical resistivity of ZnO:Li was measured and showed behavior consistent with bulk hole conduction for temperatures above 400 K. A photoluminescence peak in ZnO nanocrystals has been attributed to an acceptor, which may involve a zinc vacancy. High field (W-band) electron paramagnetic resonance measurements on the nanocrystals revealed an axial center with g = 2.0033 and g = 2.0075, along with an isotropic center at g = 2.0053.

Authors:
; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
Sponsoring Org.:
USDOE
OSTI Identifier:
1182904
Report Number(s):
PNNL-SA-104602
47648; 42310; KP1704020
Grant/Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of Applied Physics, 117(11):Article No. 112802
Additional Journal Information:
Journal Name: Journal of Applied Physics, 117(11):Article No. 112802
Country of Publication:
United States
Language:
English
Subject:
Environmental Molecular Sciences Laboratory

Citation Formats

Mccluskey, Matthew D., Corolewski, Caleb, Lv, Jinpeng, Tarun, Marianne C., Teklemichael, Samuel T., Walter, Eric D., Norton, M. G., Harrison, Kale W., and Ha, Su Y. Acceptors in ZnO. United States: N. p., 2015. Web. doi:10.1063/1.4913827.
Mccluskey, Matthew D., Corolewski, Caleb, Lv, Jinpeng, Tarun, Marianne C., Teklemichael, Samuel T., Walter, Eric D., Norton, M. G., Harrison, Kale W., & Ha, Su Y. Acceptors in ZnO. United States. doi:10.1063/1.4913827.
Mccluskey, Matthew D., Corolewski, Caleb, Lv, Jinpeng, Tarun, Marianne C., Teklemichael, Samuel T., Walter, Eric D., Norton, M. G., Harrison, Kale W., and Ha, Su Y. Sat . "Acceptors in ZnO". United States. doi:10.1063/1.4913827. https://www.osti.gov/servlets/purl/1182904.
@article{osti_1182904,
title = {Acceptors in ZnO},
author = {Mccluskey, Matthew D. and Corolewski, Caleb and Lv, Jinpeng and Tarun, Marianne C. and Teklemichael, Samuel T. and Walter, Eric D. and Norton, M. G. and Harrison, Kale W. and Ha, Su Y.},
abstractNote = {Zinc oxide (ZnO) has potential for a range of applications in the area of optoelectronics. The quest for p-type ZnO has focused much attention on acceptors. In this paper, Cu, N, and Li acceptor impurities are discussed. Experimental evidence shows that these point defects have acceptor levels 3.2, 1.5, and 0.8 eV above the valence-band maximum, respectively. The levels are deep because the ZnO valence band is quite low compared to conventional, non-oxide semiconductors. Using MoO2 contacts, the electrical resistivity of ZnO:Li was measured and showed behavior consistent with bulk hole conduction for temperatures above 400 K. A photoluminescence peak in ZnO nanocrystals has been attributed to an acceptor, which may involve a zinc vacancy. High field (W-band) electron paramagnetic resonance measurements on the nanocrystals revealed an axial center with g = 2.0033 and g = 2.0075, along with an isotropic center at g = 2.0053.},
doi = {10.1063/1.4913827},
journal = {Journal of Applied Physics, 117(11):Article No. 112802},
number = ,
volume = ,
place = {United States},
year = {Sat Mar 21 00:00:00 EDT 2015},
month = {Sat Mar 21 00:00:00 EDT 2015}
}

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Cited by: 17 works
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Works referenced in this record:

EasySpin, a comprehensive software package for spectral simulation and analysis in EPR
journal, January 2006


Semiconductor Clusters, Nanocrystals, and Quantum Dots
journal, February 1996