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Title: Organic hybrid planar-nanocrystalline bulk heterojunctions

Patent ·
OSTI ID:1016554

A photosensitive optoelectronic device having an improved hybrid planar bulk heterojunction includes a plurality of photoconductive materials disposed between the anode and the cathode. The photoconductive materials include a first continuous layer of donor material and a second continuous layer of acceptor material. A first network of donor material or materials extends from the first continuous layer toward the second continuous layer, providing continuous pathways for conduction of holes to the first continuous layer. A second network of acceptor material or materials extends from the second continuous layer toward the first continuous layer, providing continuous pathways for conduction of electrons to the second continuous layer. The first network and the second network are interlaced with each other. At least one other photoconductive material is interspersed between the interlaced networks. This other photoconductive material or materials has an absorption spectra different from the donor and acceptor materials.

Research Organization:
Princeton Univ., NJ (United States); The University of Southern California (Los Angeles, CA)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC36-98GO10337
Assignee:
The Trustees of Princeton University (Princeton, NJ); The University of Southern California (Los Angeles, CA)
Patent Number(s):
7,897,429
Application Number:
US Patent Application 11/561,448
OSTI ID:
1016554
Country of Publication:
United States
Language:
English

References (8)

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Small molecular weight organic thin-film photodetectors and solar cells journal April 2003
Efficient photon harvesting at high optical intensities in ultrathin organic double-heterostructure photovoltaic diodes journal May 2000
Novel photovoltaic devices based on donor-acceptor molecular and conducting polymer systems journal January 1997
Long-range absorption enhancement in organic tandem thin-film solar cells containing silver nanoclusters journal December 2004
Controlled growth of a molecular bulk heterojunction photovoltaic cell journal December 2004
Organic Solar Cells Using Transparent SnO2–F Anodes journal August 2006
Improvement of Sensitivity in Long-Wavelength Range in Organic Thin-Film Solar Cell with Interpenetrating Semilayered Structure journal January 2006