| 主权项 |
1. A concentrator system, comprising
an optical concentrator unit and a receiver, said receiver has a carrier substrate (11) and at least one photovoltaic solar cell (2), the optical concentrator unit and the receiver are arranged in an interacting fashion such that during use of the concentrator system incident electromagnetic radiation is concentrated by the concentrator unit onto at least one partial region of a front side of the solar cell (2) facing the incident radiation during use, and said solar cell (2) is a photovoltaic semiconductor solar cell, having at least one base region and at least one emitter region and also at least one metallic base contact structure (5), which is electrically conductively connected to the base region and is designed for external electrical interconnection, and having at least one metallic emitter contact structure (4), which is electrically conductively connected to the emitter region and is designed for external electrical contact-making, the base contact structure (5) and the emitter contact structure (4) are arranged indirectly or directly on the front side of the solar cell (2), at least one base back-side metallization (5a), which is electrically conductively connected to the base (8), is arranged indirectly or directly at a back-side of the solar cell (2), and the solar cell (2) has at least one metallic base via structure (5b), said base via structure (5b) extends from the base back-side metallization to the base contact structure (5), such that base back-side metallization (5a) and base contact structure (5) are electrically conductively connected by the base via structure (5b). |
