DOI: 10.1063/1.1735972. Thermionic and Photoelectric Emission from Magnesium Oxide

Thermionic and Photoelectric Emission from Magnesium Oxide

10.1063/1.1735972

Crossref journal-article

AIP Publishing

Journal of Applied Physics (317)

Abstract

Measurements of the thermionic emission as a function of temperature and the photoelectric yield as a function of the photon energy in the range from 2.5 ev to 11.5 ev have been made on magnesium oxide in the form of thin films, powders, and single crystals. The thermionic emission measurements indicate that the position of the Fermi energy in most samples of MgO is controlled primarily by the electrons in a donor level located approximately 3.4 ev below the vacuum level. Measurements of the enhancement of the photoelectric yield in the impurity sensitive region gives evidence for impurity levels slightly greater than 2.4 ev and 5 ev below the bottom of the conduction band. A sharp rise in yield at 7.5 ev in active samples coincides with the optical absorption edge associated with exciton formation. Heating the samples in oxygen greatly reduces the rise at 7.5 ev but has little effect on the yield at energies greater than 10 ev. From this it is concluded that the energy difference from the top of the filled band to the vacuum level is less than 10 ev.

Bibliography

Stevenson, J. R., & Hensley, E. B. (1961). Thermionic and Photoelectric Emission from Magnesium Oxide. Journal of Applied Physics, 32(2), 166â172.

Authors 2

James R. Stevenson (first)
Eugene B. Hensley (additional)

References 15 Referenced 37

10.1103/PhysRev.112.1106 / Phys. Rev. (1958)
10.1103/PhysRev.113.1019 / Phys. Rev. (1959)
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{'key': '2024020119121672000_r4', 'first-page': '604', 'volume': '75', 'year': '1924', 'journal-title': 'Ann. Physik'} / Ann. Physik (1924)
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{'key': '2024020119121672000_r6'}
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10.1103/PhysRev.112.423 / Phys. Rev. (1958)
10.1063/1.1735994 / J. Appl. Phys. (1961)
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10.1016/S0031-8914(35)90091-X / Physica (1935)
10.1103/PhysRev.107.687 / Phys. Rev. (1957)
10.1007/BF01340175 / Z. Physik (1951)
10.1103/PhysRev.91.822 / Phys. Rev. (1953)

Dates

Type	When
Created	20 years, 4 months ago (April 22, 2005, 12:28 p.m.)
Deposited	1 year, 7 months ago (Feb. 1, 2024, 2:33 p.m.)
Indexed	1 year, 7 months ago (Feb. 4, 2024, 4:06 p.m.)
Issued	64 years, 7 months ago (Feb. 1, 1961)
Published	64 years, 7 months ago (Feb. 1, 1961)
Published Print	64 years, 7 months ago (Feb. 1, 1961)

Funders 0

None

BibTeX

@article{Stevenson_1961, title={Thermionic and Photoelectric Emission from Magnesium Oxide}, volume={32}, ISSN={1089-7550}, url={http://dx.doi.org/10.1063/1.1735972}, DOI={10.1063/1.1735972}, number={2}, journal={Journal of Applied Physics}, publisher={AIP Publishing}, author={Stevenson, James R. and Hensley, Eugene B.}, year={1961}, month=feb, pages={166–172} }

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