Efficient semitransparent small-molecule organic solar cells | Zendy

Jan Meiss | Zendy; Karl Leo | Zendy; Moritz Riede | Zendy; Christian Uhrich | Zendy; WolfMichael Gnehr | Zendy; Stefan Sonntag | Zendy; Martin Pfeiffer | Zendy

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Efficient semitransparent small-molecule organic solar cells

Author(s) -

Jan Meiss,

Karl Leo,

Moritz Riede,

Christian Uhrich,

WolfMichael Gnehr,

Stefan Sonntag,

Martin Pfeiffer

Publication year - 2009

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.3268784

Subject(s) - materials science , organic solar cell , optoelectronics , indium tin oxide , heterojunction , phthalocyanine , energy conversion efficiency , electrode , evaporation , organic semiconductor , zinc , charge carrier , layer (electronics) , nanotechnology , chemistry , polymer , composite material , physics , metallurgy , thermodynamics

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 C₆₀, 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. © 2009 American Institute of Physics.

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