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Proceedings Paper

Hole photogeneration in dual layer aggregate photoreceptors
Author(s): Marie B. O'Regan; Paul M. Borsenberger; Edward H. Magin; T. Zubil
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Paper Abstract

Photogeneration efficiencies have been measured in dual layer aggregate photoreceptors over a wide range of fields and wavelengths. The results are described by a surface-enhanced exciton dissociation model. The model is based on a theory of geminate recombination, originally due to Onsager. The Onsager theory is based on the assumption that the absorption of a photon creates a bound electron-hole pair which then either dissociates into a free electron and a free hole, or undergoes recombination. The key parameters of the theory are the fraction of absorbed photons that create bound pairs, and the electron-hole separation distance of the bound pair. For aggragate materials, the yield of creating the bound pairs is 0.60. The separation distances are between 20 and 60 angstrom. The high photogeneration efficiencies in these materials are attributed to both the high yield of creating the bound pairs and the low electron-hole recombination probability because of the large pair separation distances.

Paper Details

Date Published: 23 August 1995
PDF: 9 pages
Proc. SPIE 2526, Xerographic Photoreceptors and Photorefractive Polymers, (23 August 1995); doi: 10.1117/12.217320
Show Author Affiliations
Marie B. O'Regan, Eastman Kodak Co. (United States)
Paul M. Borsenberger, Eastman Kodak Co. (United States)
Edward H. Magin, Eastman Kodak Co. (United States)
T. Zubil, Eastman Kodak Co. (United States)

Published in SPIE Proceedings Vol. 2526:
Xerographic Photoreceptors and Photorefractive Polymers
Stephen Ducharme; Paul M. Borsenberger, Editor(s)

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