Ctf Solar Gmbh

China Triumph International Engineering Co., Ltd.

Fraunhofer-gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

China Triumpf International Engineering Co. Ltd.

Bettina Späth

Bastian Siepchen

Shou Peng

Krishnakumar Velappan

Christian Drost

Christoph Metzner

Olaf Zywitzki

Henry Morgner

Michael Harr

Xinjian Yin

Torsten Werner

Ganhua Fu

Christian Kraft

Daniel Hirsch

Ludwig Decker

Sven Frauenstein

Marcel Mischke

Peng Shou

A method for depositing a CdTe layer on a substrate in a vacuum chamber by means of physical gas phase deposition is provided. The substrate is heated to a coating temperature before the deposition process and then guided past a vessel in which CdTe is converted into a vapour state, a gaseous component with an increased pressure (compared to the vacuum in the vacuum chamber) flowing through at least one inlet, against the substrate surface to be coated, such that the gaseous component is adsorbed on the substrate surface to be coated before the substrate is guided past the at least one vessel.

Method for depositing a CdTe layer on a substrate

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 CdClactivation treatment step. This is achieved by applying a sacrificial metal-halide layer between the CdS-layer and the CdTe-layer of the solar cells.

Method for producing thin-film solar cells

The present invention concerns a method for the manufacture of the first layer of a back contact layer for thin-layer solar cells in superstrate configuration. In the prior art, this layer is deposited as a compound, for example as a layer of SbTe. In accordance with the invention, however, a tellurium-rich surface layer of the cadmium telluride layer is produced, on which a first material is deposited which is capable of forming an electrically conductive second material with tellurium and of producing the second material by reaction of the first material and tellurium in the surface layer. The second material forms the first layer of the back contact layer.

Method for producing the rear contact layer for CdTe thin-film solar cells

Growing community of inventors

Dresden, Germany

Bettina Späth