High efficiency organic photovoltaic cells employing hybridized mixed-planar heterojunctions

Xue, Jiangeng; Uchida, Soichi; Rand, Barry P.; Forrest, Stephen

High efficiency organic photovoltaic cells employing hybridized mixed-planar heterojunctions

Patent · Tue Aug 18 04:00:00 EDT 2015

OSTI ID:1210224

Xue, Jiangeng; Uchida, Soichi; Rand, Barry P.; Forrest, Stephen

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 photoactive organic layer that is a mixture of an organic acceptor material and an organic donor material, wherein the first photoactive organic layer has a thickness not greater than 0.8 characteristic charge transport lengths; a second photoactive organic layer in direct contact with the first organic layer, wherein the second photoactive organic layer is an unmixed layer of the organic acceptor material of the first photoactive organic layer, and the second photoactive organic layer has a thickness not less than about 0.1 optical absorption lengths; and a third photoactive organic layer disposed between the first electrode and the second electrode and in direct contact with the first photoactive organic layer. The third photoactive organic layer is an unmixed layer of the organic donor layer of the first photoactive organic layer and has a thickness not less than about 0.1 optical absorption lengths.

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Research Organization:: National Renewable Energy Laboratory (NREL), Golden, CO (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: AC36-99GO10337

Assignee:: The Trustees of Princeton University (Princeton, NJ)

Patent Number(s):: 9,112,164

Application Number:: 14/068,430

OSTI ID:: 1210224

Country of Publication:: United States

Language:: English

References (39)

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