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Title: Acceptors in ZnO

Journal Article · · Journal of Applied Physics
DOI:https://doi.org/10.1063/1.4913827· OSTI ID:22399283
; ; ;  [1];  [2]; ;  [3];  [4]
  1. Department of Physics and Astronomy, Washington State University, Pullman, Washington 99164-2814 (United States)
  2. Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99352 (United States)
  3. School of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164-2920 (United States)
  4. Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164-6515 (United States)

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 indicates these point defects have acceptor levels 3.2, 1.4, 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 MoO{sub 2} 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 is attributed to an acceptor, which may involve a Zn vacancy. High field (W-band) electron paramagnetic resonance measurements on the nanocrystals revealed an axial center with g{sub ⊥} = 2.0015 and g{sub //} = 2.0056, along with an isotropic center at g = 2.0035.

OSTI ID:
22399283
Journal Information:
Journal of Applied Physics, Vol. 117, Issue 11; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
Country of Publication:
United States
Language:
English

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Cited By (12)

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Tutorial: Defects in semiconductors—Combining experiment and theory journal May 2016
Deep donor state of the copper acceptor as a source of green luminescence in ZnO journal July 2017
Acceptor-modulated optical enhancements and band-gap narrowing in ZnO thin films journal March 2018
Bandgap of cubic ZnS 1-x O x from optical transmission spectroscopy journal February 2019
Recent progress of the native defects and p-type doping of zinc oxide journal April 2017
Magnetic coupling properties of Zn vacancies in ZnO nanowire with screw dislocation journal September 2019
Enhancement of multi-photon Raman scattering and photoluminescence emission from Li-doped ZnO nanowires journal January 2019
Broad luminescence from donor-complexed Li Zn and Na Zn acceptors in ZnO journal November 2019
Fixed-node diffusion Monte Carlo description of nitrogen defects in zinc oxide journal February 2017
Metastable rocksalt ZnO is p -type dopable journal August 2018
Metastable rocksalt ZnO is $p$-type dopable text January 2018

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