Back to articles
Articles
Volume: 15 | Article ID: art00094_2
Image
Numerical Simulations of Photocurrent Multiplication Phenomenon at Organic/Metal Interface
  DOI :  10.2352/ISSN.2169-4451.1999.15.1.art00094_2  Published OnlineJanuary 1999
Abstract

In order to elucidate the photocurrent multiplication mechanism observed in the photoconducting organic pigment films, the electric field distribution formed by the space charges accumulated near organic/metal interface having imperfect contact and the flow of photogenerated carriers were numerically simulated. It was found that high density of surface charges, namely, charge accumulation appears in the steady state when the photogenerated carriers are supplied continuously, and that the accumulated charges staying at the non-contact organic film interface can provide enough high field for tunneling charge injection leading to multiplication process. These results indicate the validity of our previously proposed “structural trap model” that the charge accumulation occurs at blind alleys lying on the rough film surface of the organic/metal interface. Indeed, by introducing lower surface mobility based on the concept of rough surface of the orgainc film, the typically observed multiplied photocurrent response was well reproduced.

Subject Areas :
Views 4
Downloads 0
 articleview.views 4
 articleview.downloads 0
  Cite this article 

Ken-ichi Nakayama, Masahiro Hiramoto, Masaaki Yokoyama, "Numerical Simulations of Photocurrent Multiplication Phenomenon at Organic/Metal Interfacein Proc. IS&T Int'l Conf. on Digital Printing Technologies (NIP15),  1999,  pp 743 - 746,  https://doi.org/10.2352/ISSN.2169-4451.1999.15.1.art00094_2

 Copy citation
  Copyright statement 
Copyright © Society for Imaging Science and Technology 1999
72010410
NIP & Digital Fabrication Conference
nip digi fabric conf
2169-4451
Society of Imaging Science and Technology
7003 Kilworth Lane, Springfield, VA 22151, USA