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Title: High efficiency organic photovoltaic cells employing hybridized mixed-planar heterojunctions

Abstract

A device is provided, having a first electrode, a second electrode, and a photoactive region disposed between the first electrode and the second electrode. The photoactive region includes a first organic layer comprising a mixture of an organic acceptor material and an organic donor material, wherein the first organic layer has a thickness not greater than 0.8 characteristic charge transport lengths, and a second organic layer in direct contact with the first organic layer, wherein: the second organic layer comprises an unmixed layer of the organic acceptor material or the organic donor material of the first organic layer, and the second organic layer has a thickness not less than about 0.1 optical absorption lengths. Preferably, the first organic layer has a thickness not greater than 0.3 characteristic charge transport lengths. Preferably, the second organic layer has a thickness of not less than about 0.2 optical absorption lengths. Embodiments of the invention can be capable of power efficiencies of 2% or greater, and preferably 5% or greater.

Inventors:
; ; ;
Issue Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1108716
Patent Number(s):
8586967
Application Number:
10/910,371
Assignee:
The Trustees of Princeton University (Princeton, NJ)
Patent Classifications (CPCs):
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01L - SEMICONDUCTOR DEVICES
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY

Citation Formats

Xue, Jiangeng, Uchida, Soichi, Rand, Barry P, and Forrest, Stephen. High efficiency organic photovoltaic cells employing hybridized mixed-planar heterojunctions. United States: N. p., 2013. Web.
Xue, Jiangeng, Uchida, Soichi, Rand, Barry P, & Forrest, Stephen. High efficiency organic photovoltaic cells employing hybridized mixed-planar heterojunctions. United States.
Xue, Jiangeng, Uchida, Soichi, Rand, Barry P, and Forrest, Stephen. Tue . "High efficiency organic photovoltaic cells employing hybridized mixed-planar heterojunctions". United States. https://www.osti.gov/servlets/purl/1108716.
@article{osti_1108716,
title = {High efficiency organic photovoltaic cells employing hybridized mixed-planar heterojunctions},
author = {Xue, Jiangeng and Uchida, Soichi and Rand, Barry P and Forrest, Stephen},
abstractNote = {A device is provided, having a first electrode, a second electrode, and a photoactive region disposed between the first electrode and the second electrode. The photoactive region includes a first organic layer comprising a mixture of an organic acceptor material and an organic donor material, wherein the first organic layer has a thickness not greater than 0.8 characteristic charge transport lengths, and a second organic layer in direct contact with the first organic layer, wherein: the second organic layer comprises an unmixed layer of the organic acceptor material or the organic donor material of the first organic layer, and the second organic layer has a thickness not less than about 0.1 optical absorption lengths. Preferably, the first organic layer has a thickness not greater than 0.3 characteristic charge transport lengths. Preferably, the second organic layer has a thickness of not less than about 0.2 optical absorption lengths. Embodiments of the invention can be capable of power efficiencies of 2% or greater, and preferably 5% or greater.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2013},
month = {11}
}

Patent:

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