PRiMELiNE - Roth & Rau AG

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PRiMELiNE Turnkey Solutions by Roth & Rau Metal Contact Deposition tool After chemical preparation the substrates are automatically transferred into the metal contact deposition tool. The back contact processing is accomplished with a dedicated PVD process, within this process several metal materials can be sputtered onto the CdS / CdTe layer stack in order to optimize sheet resistance of the sputtered layers. Sputtered layer composition and processing conditions may be optimized depending on customer requirements. The metal contact deposition tool is explicitly designed for exceptional high production performance with long uninterrupted sputtering times and a synchronized sputter target lifetime with optimized preventive maintenance intervals to achieve high tool uptime. Key features: Short substrate edge leading, layer stack facing upwards Cycle time < 60 sec. Long uninterrupted sputter campaigns High process stability and accuracy High yield, high reliability, high availability Maintenance friendly Vacuum pumps included Integrated substrate heating for hot sputtering Integrated filtration of exhaust gases Integrated cooling zone All Back Contact Deposition tools are designed to comply with the Roth & Rau CTF Solar principle of delivering only environmental friendly tools, as also realized in the entire PRiMELiNE CdTe turnkey production line, which is designed to keep the "environmental footprint" as small as possible: All fab emissions are post-treated already at tool-level so that virtually no contaminated or hazardous substances can be released to the environment, and used processing fluids are recycled for minimal consumption values. Turnkey Cluster PRiMELiNE CdTe Back-Contact Cluster (80 MW) Project duration Cluster content 13 months – Etching station with closed loop DI-water supply and wastewater treatment – 2 conveyors – Buffer station incl. 3 storage boxes – Back-contact magnetron sputtering machine – Substrate cooling section – EHS equipment
PRiMELiNE CdTe Back-End Cluster (80 MW) CdTe Thin Film PV Modules have been recognized as the markets most cost efficient solution for PV applications. To support cost efficient and proven processing Roth & Rau CTF Solar offers processing clusters and tools for all thinfilm PV customers worldwide that can be seamlessly integrated into new production lines as well as into existing fabrication lines. The Roth & Rau CTF Solar chosen cluster design provides to the customer specific process knowledge combined with suitable process equipment and processing materials, project management and equipment startup in order to enhance product quality and module efficiencies. All PRiMELiNE CdTe Clusters are capable of processing standard module sizes of 1200 x 1600 mm (other dimensions on request), with a throughput of > 60 modules per hour. Basis for the design of all PRiMELiNE CdTe Cluster Tools is the innovative yet proven PRiMELiNE CdTe Turnkey production line. The backend processing of PV modules is crucial for achieving high module reliability and lifetime. Especially module certification acc. to DIN EN 61464 and DIN-EN 61740-1/2 is highly dependent on the overall quality of the Back-End process. The Roth & Rau CTF Solar Back-End Cluster provides for a well engineered total solution, including material selection, process know how, and equipment specification and therefore ensures for a "glitch-free" product certification and PV module lifetimes > 20 years. The PRiMELiNE CdTe Backend Cluster is specifically designed for CdTe photovoltaic modules. To provide for a balanced investment cost optimization a mix of automatic and manual processes is chosen. The Roth & Rau CTF Solar Back-End Cluster comprises a complex sequence of module processing tools: Module test, busbar application, edge sealing, marriage (e.g. application of encapsulant foil plus layering of backside glass), lamination, junction box application, and final testing (flasher, wet leakage, and metrology) plus labeling. An optimized, integrated substrate buffering concept (buffer station with exchangeable storage boxes, FILO buffers, loading stations) is integrated into the cluster design which allows for flexible maintenance schedules and reduced impact of unscheduled equipment events. Of course all intermediate substrate transport devices necessary for operation of the entire Back-End are included in the Cluster design. For a seamless integration into existing production lines the Roth & Rau CTF Solar Back-End Cluster uses a standardized SECS/GEM protocol, substrate-ID-tracking (virtual / DMC reader), and adaptable horizontal communication with adjacent process tools. The Module Tester yields a Go/No Go decision and determines if the module is worth applying the backend process. This is accomplished by an automatic I-V-curve tracing when applying light to the module and allows for a calculation of most electrical key parameters ( Isc, V0C, Pmax, FF, Rserieal, Rparallel). The Module Tester uses state-of-the-art LED lighting which allows for long uptimes and reliable functionality. In the Busbar Application machine the module's sub cells are connected via a conductive, low-loss Cu-ribbon and a conductive silver paste. Alternatively soldering or ultrasonic welding methods can be used, depending on the specific physical properties of the photovoltaic layers. All components in this process are carefully selected with special attention to long-term reliability of the module. The Edges Sealing tool applies an UV-stable and highly resistive string of sealant, variable in width and thickness, in an extrusion process. Other than in available Back-End processes this special process serves as an additional barrier against humidity penetrating into the module and is therefore part of the "dual component" sealing solution. Roth & Rau CTF Solar delivers to its customers an optimized and tested combination from equipment, material, and application process for an unsurpassed module lifetime.
Page 1 and 2: PRiMELiNE CdTe Cadmium Telluride Fa
Page 3 and 4: PRiMELiNE CdTe Laser Cluster (80 MW
Page 5 and 6: PRiMELiNE CdTe Coating Cluster (80
Page 7 and 8: PRiMELiNE Turnkey Solutions by Roth
Page 9: PRiMELiNE CdTe Back-Contact Cluster
Page 13 and 14: Turnkey Cluster PRiMELiNE CdTe Back
Page 15 and 16: PRiMELiNE CdTe - Turnkey solutions

PRiMELiNE - Roth & Rau AG

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