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Home Manufacturing of Atomically Sharp Silicon Tips and Their Use as Photocathodes

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Manufacturing of Atomically Sharp Silicon Tips and Their Use as Photocathodes

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Permanent URL	http://hdl.lib.byu.edu/1877/2921
Title	Manufacturing of Atomically Sharp Silicon Tips and Their Use as Photocathodes
BYU Creator	Karian, W.I. Knight, Larry V. Allred, David D. Reyes-Mena, A.
Description/Abstract	The discovery and understanding of the photoelectric effect led to the study of photoemissive materials fall into two major categories: classical photoemitters and negative-electron-affinity (NEA) materials. Classical photoemitters usually involve an alkali metal, a group-V element such as phosphorus, silver, and/or oxygen. An example is the Ag-O-Cs (S1) photoemitter. NEA photocathodes consist of a photoconductive single crystal semiconductor covered with a thin layer of cesium and oxygen. This layer lowers the work function of the photocathode. A dipole layer is formed at the surface, and band bending occurs. This lowers the effective work function. An example is the GaAs(CsO) photocathode (Moore, Davis, and Caplan, 1989). Other photocathodes that are noteworthy include reverse biased p-n junctions, Schottky contacts, and metal-insulator-semiconductor structures (Miller and Jones, 1980). The electrons are formed as minority carriers in a p-type semiconductor and are then emitted over the metallic surface barrier that has been treated with cesium to lower its work function.
Source	W.I. Karain, Larry V. Knight, David D. Allred and A. Reyes-Mena, "Manufacturing of atomically sharp silicon tips and their use as photocathodes" Encyclia: The Journal of the Utah Academy of Sciences, Arts and Letters. 69, 257-272 (1992). [http://www.utahacademy.org/].
Publisher	Utah Academy of Sciences, Arts, and Letters
Date Original	1992
Language	English eng en
Publication Type	Articles
Type	Text
Format	application/pdf
Owning Institution	Brigham Young University
BYU College	College of Physical and Mathematical Sciences
BYU Department	Physics and Astronomy
Copyright Status	© 1992 Utah Academy of Sciences, Arts, and Letters. Used with permission. All rights reserved.
Copyright Use Information	http://www.lib.byu.edu/generic_copyright.html

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