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Charge transport through α-monoclinic selenium

Caywood, J. M. and Mead, C. A. (1970) Charge transport through α-monoclinic selenium. Journal of Physics and Chemistry of Solids, 31 (5). pp. 983-994. ISSN 0022-3697.

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The existence of surface barriers on α-monoclinic selenium crystals has been demonstrated. Photometric measurements indicate electron barrier energies of 1.05 and 1.3 eV, respectively, for Ga and Au contacts. The mobilities of holes and electrons have been measured by a time-of-flight technique to be about 0.2cm^2/Vsec and 1.6cm^2/Vsec, respectively, at room temperature. The hole mobility was found to be limited by traps 0·23 ± 0.01 eV above the valence levels, while the electron mobility is an intrinsic mobility limited by scattering. It was found that in the region of low carrier density (i.e. no space charge effects) the collection efficiency was limited by diffusion of carriers into the metal contact.

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Additional Information:© 1970 Pergamon Press. Received 24 July 1969; in revised form 23 September 1969.
Issue or Number:5
Record Number:CaltechAUTHORS:20150929-092047338
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:60589
Deposited By: Kristin Buxton
Deposited On:29 Sep 2015 18:46
Last Modified:03 Oct 2019 08:58

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