Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V.

Ctf Solar Gmbh

Daniel Hirsch

Christoph Metzner

Olaf Zywitzki

Torsten Werner

Bastian Siepchen

Henry Morgner

Krishnakumar Velappan

Christian Drost

Bettina Späth

Christian Kraft

Torsten Kopte

Ludwig Decker

Thomas Modes

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 for producing a CdTe solar cell is provided, wherein at least the following layers are deposited on a glass substrate within a vacuum chamber: a TCO layer acting as a frontal contact; at least one CdTe layer; a thin layer of a chlorine-containing compound, and an electrically conductive layer acting as a return contact. Here, a maximally 20 nm thick passivation layer made from CdS, in which chemically non-bound oxygen is embedded, is deposited on the TCO layer prior to deposition of at least one CdTe-layer.

Method for producing a CdTe solar cell

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Dresden, Germany

Daniel Hirsch