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Title: Organic photovoltaic cell incorporating electron conducting exciton blocking layers

Abstract

The present disclosure relates to photosensitive optoelectronic devices including a compound blocking layer located between an acceptor material and a cathode, the compound blocking layer including: at least one electron conducting material, and at least one wide-gap electron conducting exciton blocking layer. For example, 3,4,9,10 perylenetetracarboxylic bisbenzimidazole (PTCBI) and 1,4,5,8-napthalene-tetracarboxylic-dianhydride (NTCDA) function as electron conducting and exciton blocking layers when interposed between the acceptor layer and cathode. Both materials serve as efficient electron conductors, leading to a fill factor as high as 0.70. By using an NTCDA/PTCBI compound blocking layer structure increased power conversion efficiency is achieved, compared to an analogous device using a conventional blocking layers shown to conduct electrons via damage-induced midgap states.

Inventors:
;
Publication Date:
Research Org.:
Univ. of Michigan, Ann Arbor, MI (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1150826
Patent Number(s):
8,816,332
Application Number:
13/400,963
Assignee:
The Regents of the University of Michigan (Ann Arbor, MI) CHO
DOE Contract Number:  
SC00000957; SC0001013
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY

Citation Formats

Forrest, Stephen R., and Lassiter, Brian E.. Organic photovoltaic cell incorporating electron conducting exciton blocking layers. United States: N. p., 2014. Web.
Forrest, Stephen R., & Lassiter, Brian E.. Organic photovoltaic cell incorporating electron conducting exciton blocking layers. United States.
Forrest, Stephen R., and Lassiter, Brian E.. Tue . "Organic photovoltaic cell incorporating electron conducting exciton blocking layers". United States. https://www.osti.gov/servlets/purl/1150826.
@article{osti_1150826,
title = {Organic photovoltaic cell incorporating electron conducting exciton blocking layers},
author = {Forrest, Stephen R. and Lassiter, Brian E.},
abstractNote = {The present disclosure relates to photosensitive optoelectronic devices including a compound blocking layer located between an acceptor material and a cathode, the compound blocking layer including: at least one electron conducting material, and at least one wide-gap electron conducting exciton blocking layer. For example, 3,4,9,10 perylenetetracarboxylic bisbenzimidazole (PTCBI) and 1,4,5,8-napthalene-tetracarboxylic-dianhydride (NTCDA) function as electron conducting and exciton blocking layers when interposed between the acceptor layer and cathode. Both materials serve as efficient electron conductors, leading to a fill factor as high as 0.70. By using an NTCDA/PTCBI compound blocking layer structure increased power conversion efficiency is achieved, compared to an analogous device using a conventional blocking layers shown to conduct electrons via damage-induced midgap states.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2014},
month = {8}
}

Patent:

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