Multi layer organic thin film solar cell
OwnerBin Fan, Frank Nüesch +1inventors
InventorsBin Fan, Frank Nüesch, Roland Hany
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Abstract
The disclosed invention consists of high efficiency organic solar cells (0) with a multi layer structure, consisting of cathode layer (1), organic acceptor layer (2), organic donor layer (3), conductive anode layer (4) and a substrate layer (5), where an adjustment of electronic levels of separated layers is achieved by introduction of at least one intermediate matching layer (x). In conjunction with the selection of active layer (3) consisting of cyanine dyes with appropriate counterions (e.g. hexafluorophosphate), high performance organic solar cells with long lifetimes can be fabricated with a fast and simple manufacturing method.
Claims12
Multi layer organic thin film solar cell (0)
- comprising a cathode layer (1), an acceptor layer (2), a donor layer (3), a conductive anode layer (4) and a substrate layer (5) that are adjacently layered one on another in the respective order, where at least one organic or inorganic intermediate matching layer (x) is arranged at heterojunction interfaces between at least two adjacently arranged layers (1, 2, 3, 4, 5),
- characterized in that
- the intermediate matching layer (x) comprises inorganic salt or organic salt, in particular any salt of the following group:
- NH4BF4, NaClO4, LiClO4, NaBF4, R4NBF4, NH4ClO4, R4NClO4 (here R represents any alkyl group) and also cyanine salts.
Method for fabrication of multi layer organic thin film solar cells (0) according to one of the preceding claims,
- characterized in
- subsequent coating processes:
- a) coating of conductive anode layer (4) on the substrate layer (5), followed by subsequent
- b) coating of the intermediate matching layer (x) comprising inorganic salt or organic salt on the conductive anode layer (4), followed by subsequent
- c) coating of the active layer (3) covering the intermediate matching layer (x), followed by d) deposition of the acceptor layer (2) onto the active layer (3) followed by e) deposition of the cathode layer (1). 13. Method for fabrication of multi layer organic thin film solar cells (0) according to Claim 12, characterized in that the coating process steps a), b) and c) are carried out under ambient conditions, while the coating process steps d) and e) are carried out under vacuum conditions. 14. Method for fabrication of multi layer organic thin film solar cells (0) according to one of the Claims 12 or 13, characterized in that the coating step b) can be applied following coating step c) and/or coating step d).
Dependencies are inferred from the claim text.