Journal
APPLIED SURFACE SCIENCE
Volume 256, Issue 9, Pages 2661-2667Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2009.11.044
Keywords
Bathocuproine; Density functional theory; Interface states; Organic solar cell
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Electronic structure of the interface between a bathocuproine (BCP) molecule and metal surface was studied by density functional theory. The bond energy of BCP with metal surface increased with decreasing work function of metals, that is, Au, Ag, Al, Mg, and Ca in this order. The charge transfer also increased with decreasing metal work function. It was analyzed that the Fermi level and the lowest unoccupied molecular orbital of BCP are composed of both BCP and metal orbital component, and electron transport properties across the BCP and metal is discussed based on these analyses. (C) 2009 Elsevier B. V. All rights reserved.
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