Tandem-type organic photoelectric conversion element and solar battery

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United States of America Patent

PATENT NO 9666818
APP PUB NO 20120199186A1
SERIAL NO

13395517

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A tandem-type organic photoelectric conversion element has at least a first electrode, a second electrode, and a plurality of bulk heterojunction layers each comprising a p-type organic semiconductor material and an n-type organic semiconductor material. The tandem-type organic photoelectric conversion element and a solar battery are characterized in that when the absorption wavelengths of the bulk heterojunction layers are such that a second bulk heterojunction layer absorbs up to a longer wavelength than a first bulk heterojunction layer, the LUMO energy level (LUMO(n1)) of the film of the n-type semiconductor in the first bulk heterojunction layer and the LUMO energy level (LUMO(n2)) of the film of the n-type semiconductor in the second bulk heterojunction layer satisfy the following equation (1):

description='In-line Formulae' end='lead'0.4 eV≧LUMO(n1)−LUMO(n2)≧0.1 eV  (1).description='In-line Formulae' end='tail'

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Patent Owner(s)

  • KONICA MINOLTA HOLDINGS, INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hattori, Takamune Tokyo, JP 9 87
Itoh, Hiroaki Tokyo, JP 32 293
Okubo, Yasushi Tokyo, JP 58 682
Yasukawa, Noriko Tokyo, JP 14 230

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