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Title: Architectures and criteria for the design of high efficiency organic photovoltaic cells

A method for fabricating an organic photovoltaic cell includes providing a first electrode; depositing a series of at least seven layers onto the first electrode, each layer consisting essentially of a different organic semiconductor material, the organic semiconductor material of at least an intermediate layer of the sequence being a photoconductive material; and depositing a second electrode onto the sequence of at least seven layers. One of the first electrode and the second electrode is an anode and the other is a cathode. The organic semiconductor materials of the series of at least seven layers are arranged to provide a sequence of decreasing lowest unoccupied molecular orbitals (LUMOs) and a sequence of decreasing highest occupied molecular orbitals (HOMOs) across the series from the anode to the cathode.
Inventors:
; ;
Issue Date:
OSTI Identifier:
1177028
Assignee:
The Trustees of Princeton University (Princeton, NJ) NREL
Patent Number(s):
8,993,881
Application Number:
13/965,903
Contract Number:
AC36-98G010337
Resource Relation:
Patent File Date: 2013 Aug 13
Research Org:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 14 SOLAR ENERGY

Works referenced in this record:

Interface modification to optimize charge separation in cyanine heterojunction photovoltaic devices
journal, May 2005
  • NĂ¼esch, Frank; Tornare, Gregory; Zuppiroli, Libero
  • Solar Energy Materials and Solar Cells, Vol. 87, Issue 1-4, p. 817-824
  • DOI: 10.1016/j.solmat.2004.07.054