Additional foundation layer for thin layer solar cells
AssigneesChina Triumph International Engineering Co., Ltd., Ctf Solar GmbH
InventorsBastian SIEPCHEN, Shou PENG
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Abstract
The present invention concerns an improved method for the manufacture of CdTe thin-layer solar cells or a semi-finished product therefor, which provides for the application of an additional, adhesion-promoting layer which is applied to the front contact layer following its deposition in order to improve the growth of the subsequent CdS layer; it also concerns a thin-layer solar cell produced by said method. CdTe is a particularly preferred material for the adhesion-promoting layer, which is preferably a monolayer.
Claims9
A method for the manufacture of a semi-finished product for a thin-layer solar cell, characterized by the following steps:
- a. providing a transparent substrate with a front contact layer or front contact sequence of layers
- b. applying an adhesion-promoting layer to the front contact layer or front contact sequence of layers
- c. applying a layer of pure or modified CdS to the adhesion-promoting layer.
A thin-layer solar cell comprising at least the following layers:
- a. a transparent substrate,
- b. a front contact or front contact sequence of layers,
- c. a layer of pure or modified CdS,
- d. a CdTe layer,
- e. a back contact or back contact sequence of layers,
- wherein an adhesion-promoting layer is disposed between the front contact or front contact sequence of layers and the layer of pure or modified CdS.
Dependencies are inferred from the claim text.