Abstract: An improved protective layer is provided for PECVD graphite boats for receiving wafers and for transporting the wafers in or through PECVD coating systems, in particular in the photovoltaics industry. A more homogeneous antireflection layer on silicon substrates is achieved by virtue of the PECVD boat of graphite being provided with an electrically conductive hard material coating of at least boron carbide (B4C).

Abstract: An improved protective layer is provided for PECVD graphite boats for receiving wafers and for transporting the wafers in or through PECVD coating systems, in particular in the photovoltaics industry. A more homogeneous antireflection layer on silicon substrates is achieved by virtue of the PECVD boat of graphite being provided with an electrically conductive hard material coating of at least boron carbide (B4C).

Abstract: A substrate support for receiving substrates or wafers to be processed and for transporting said substrates or wafers in or through processing installations has universal application, is easily adaptable for specific tasks and is economical in use of material. Within a frame made of longitudinal and transverse supports, a plurality of longitudinal and transverse members are arranged intersecting in a grid-like manner, such that a base grid for directly or indirectly receiving substrates is formed. Both the longitudinal and transverse supports and the longitudinal and transverse members are positively connected to one another.

Abstract: A substrate support for receiving substrates or wafers to be processed and for transporting said substrates or wafers in or through processing installations has universal application, is easily adaptable for specific tasks and is economical in use of material. Within a frame made of longitudinal and transverse supports, a plurality of longitudinal and transverse members are arranged intersecting in a grid-like manner, such that a base grid for directly or indirectly receiving substrates is formed. Both the longitudinal and transverse supports and the longitudinal and transverse members are positively connected to one another.

Abstract: A form and force locking connection of special graphite parts is provided to form multi-part components, at which the joints/connection point has almost the same physical properties as the material surrounding the connection point. The form and force locking connection is achieved by the graphite parts being interlocked at the opposing front surfaces in a three-dimensional manner so that one front surface of a first graphite part has the positive form of the interlocking and the front surface of a second opposing graphic part has the negative form of the interlocking, and the interlocking exclusively has evenly transitioned contours between side surfaces of the graphite parts.