Graded Donor-Acceptor Heterojunctions for Efficient Organic Photovoltaic Cells

Graded Donor-Acceptor Heterojunctions for Efficient Organic Photovoltaic Cells

Graded donor‐acceptor heterojunctions for efficient organic photovoltaic cells are fabricated using boron subphthalocyanine chloride (SubPc) and C60. The graded heterojunction significantly increases the exciton diffusion efficiency relative to a planar architecture, and improves the charge collecti...

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Veröffentlicht in:Advanced materials (Weinheim) 2010-12, Vol.22 (46), p.5301-5305
Hauptverfasser: Pandey, Richa, Holmes, Russell J.
Format: Artikel
Sprache:eng
Schlagworte:
Absorption
Electric Conductivity
Electric Power Supplies
Graded Heterojunctions
Organic Chemicals - chemistry
Organic Semiconductors
Photons
Photovoltaic Devices
Solar Cells
Sunlight
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Zusammenfassung:Graded donor‐acceptor heterojunctions for efficient organic photovoltaic cells are fabricated using boron subphthalocyanine chloride (SubPc) and C60. The graded heterojunction significantly increases the exciton diffusion efficiency relative to a planar architecture, and improves the charge collection efficiency relative to a uniformly mixed architecture. A power conversion efficiency of (4.2 ± 0.1)% is realized in a graded heterojunction OPV at 100 mW cm−2 AM1.5G illumination intensity.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.201002454