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Title: 2D/3D image charge for modeling field emission

Analytic image charge approximations exist for planar and spherical metal surfaces but approximations for more complex geometries, such as the conical and wirelike structures characteristic of field emitters, are lacking. Such models are the basis for the evaluation of Schottky lowering factors in equations for current density. The development of a multidimensional image charge approximation, useful for a general thermal-field emission equation used in space charge studies, is given and based on an analytical model using a prolate spheroidal geometry. A description of how the model may be adapted to be used with a line charge model appropriate for carbon nanotube and carbon fiber field emitters is discussed. [http://dx.doi.org/10.1116/1.4968007]
Authors:
 [1] ;  [2] ;  [2] ;  [1] ;  [3]
  1. Naval Research Lab. (NRL), Washington, DC (United States)
  2. Air Force Research Lab., Albuquerque, NM (United States)
  3. Leidos Corp., Billerica, MA (United States)
Publication Date:
Grant/Contract Number:
SC0013246
Type:
Accepted Manuscript
Journal Name:
Journal of Vacuum Science and Technology. B, Nanotechnology and Microelectronics
Additional Journal Information:
Journal Volume: 35; Journal Issue: 2; Journal ID: ISSN 2166-2746
Publisher:
American Vacuum Society/AIP
Research Org:
Gnosys Systems, Inc., Providence, RI (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION
OSTI Identifier:
1436564