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US 2016/0240715 A1Published application
Method for producing thin-film solar cells
AssigneesChina Triumph International Engineering Co., Ltd., Ctf Solar GmbH
InventorsKrishnakumar VELAPPAN, Bastian SIEPCHEN, Bettina SPÄTH, Christian DROST, Shou PENG
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Abstract
A method to produce thin film solar cells in superstrate or substrate configuration is an efficient way to minimize the loss due to absorption in CdS layer and to eliminate the CdCl2 activation treatment step. This is achieved by applying a sacrificial metal-halide layer between the CdS-layer and the CdTe-layer of the solar cells.
Claims20
Method for producing a solar cell in superstrate configuration, comprising the steps:
- a. Making available a transparent substrate,
- b. Applying a transparent front contact layer,
- c. Applying a CdS layer,
- d. Applying a sacrificial layer of a metal-halide compound,
- e. Applying a CdTe layer and break-up of the sacrificial layer, including diffusion of the major part of the metal ions into the CdS layer and the major part of the halide ions into the CdTe layer,
- f. Applying the back contact layer.
3 more elements
Method for producing a solar cell in substrate configuration, comprising the steps:
- a. Making available a substrate,
- b. Applying the back contact layer
- c. Applying a CdTe layer
- d. Applying a sacrificial layer of a metal-halide compound,
- e. Applying a CdS layer and break-up of the sacrificial layer, including diffusion of the major part of the metal ions into the CdS layer and the major part of the halide ions into the CdTe layer,
- f. Applying a transparent front contact layer.
3 more elements
Dependencies are inferred from the claim text.