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Efficient semitransparent small-molecule organic solar cells
被引:33
作者:
Meiss, Jan
[1
]
Leo, Karl
[1
]
Riede, Moritz K.
[1
]
Uhrich, Christian
[2
]
Gnehr, Wolf-Michael
[2
]
Sonntag, Stefan
[2
]
Pfeiffer, Martin
[2
]
机构:
[1] Tech Univ Dresden, Inst Angew Photophys, D-01062 Dresden, Germany
[2] Heliatek GmbH, D-01187 Dresden, Germany
关键词:
aluminium;
fullerenes;
indium compounds;
metallic thin films;
organic semiconductors;
semiconductor heterojunctions;
silver;
solar cells;
surfactants;
vacuum deposition;
visible spectra;
zinc compounds;
LAYERS;
D O I:
10.1063/1.3268784
中图分类号:
O59 [应用物理学];
学科分类号:
摘要:
We present semitransparent small-molecule organic solar cells (OSC) deposited by thermal evaporation onto indium tin oxide (ITO)-coated glass substrates. The devices employ ITO-free ultrathin metal layers as top electrodes, containing 1 nm metal surfactant interlayer for improved morphology. Using a bulk heterojunction of zinc phthalocyanine and C(60), sandwiched in between doped dedicated transport layers for efficient charge carrier extraction, power conversion efficiencies comparable to conventional OSC with an intransparent thick back electrode and similar device layout are achieved: the semitransparent OSC yield power conversion efficiencies well above 2% with external quantum efficiencies above 30%-40%. Organic light incoupling layers improve the transmission to up to 50% in the visible part of the optical spectrum.
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页数:3
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