EQUIPMENT EQUIPMENT FOR HIGH-EFFICIENCY SOLAR CONCEPTS CRYSTALLINE SILICON PV. SCALA XEA nova XENIA

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1 CRYSTALLINE SILICON PV EQUIPMENT EQUIPMENT FOR HIGH-EFFICIENCY SOLAR CONCEPTS SCALA XEA nova XENIA

2 VON ARDENNE was founded in 1991 as a spin-off of the former Manfred von Ardenne Research Institute. The company is based in Dresden, with subsidiaries in China, Japan, Malaysia, the USA and Vietnam. Manfred von Ardenne s inventions formed the basis for our work today in the fields of vacuum, plasma and electron beam technology. HIGH-EFFICIENCY SOLAR CONCEPTS The German family-owned company develops and manufactures advanced coating equipment for the deposition of ultra-thin functional layers on materials such as glass, metal strip, wafers and polymer films. Two key technologies are applied by our equipment: magnetron sputtering, a process during which materials such as metals or oxides are atomized in plasma and then condense as a layer, and electron beam evaporation, a method of vaporizing metals and alloys by bombarding them with electron beams. Equipment, components and technologies made by VON ARDENNE make an important contribution to the protection of the environment. Our customers use them to produce sustainable products for the generation of renewable energy and the sustainable use of resources. Among our customers are some of the worldwide leading providers of coated architectural glass. This coating helps save up to 80 percent of the cooling and heating energy of a building. Our customers in the automotive sector are using similar coatings for their glazing. Investing in photovoltaics is investing in sustainable economic development while minimizing the dependency on fossil or nuclear energy sources. It also means securing ecologically benign growth. However, for PV to become a competitive source of electricity production, the levelized cost of electricity (LCOE) from PV would have to decrease below residential and wholesale electricity prices. HETERO JUNCTION TECHNOLOGY - HJT With this cell concept, highest conversion efficiencies can be reached by means of almost perfectly passivating amorphous silicon layers applied to both sides of the silicon wafer. This is one of the most elegant and simple cell structures to aim for maximum single junction cell power. In order to meet this market demand, manufacturers of PV components need to offer more efficient and more reliable products at lower prices. High conversion efficiency and high lifetime are key. For that reason, high-efficiency crystalline silicon solar cell technology will be introduced in production. All of the concepts require new high-quality thin films in order to build up appropriate cell structures applied by means of highly productive deposition methods. VON ARDENNE provides the necessary technology and equipment. There are several other industries where our products contribute to a resource saving use of energy, be it by means of advanced turbine blade coatings for efficient aero turbines, development efforts in the battery and fuel cell technology for electromobility or light-weight and flexible electronics for the medical engineering, lighting and consumer electronics industry. The major international manufacturers of crystalline and thin-film solar modules use our highly productive equipment for their production. We are also cooperating closely with them to develop the next generation of modules that will be even more efficient. We have acquired an excellent process know-how based on the more than 150 coating systems we have installed for crystalline and thin-film solar module provides. This expertise has been incorporated into the development of coating systems for the next generation of high-efficiency solar cells. VON ARDENNE already dominates the heterojunction technology (HJT) market with the modular XEA nova wafer coating system, which can be configured according to the needs of the customer. Such coating systems are currently operated in production lines with an overall capacity of 1.5 GWp. The double-sided coating of wafers in just one coating cycle is just one of the features of this highly productive and flexible tool, which is suited for both standard and special wafer formats. The two driving factors in the industry are increasing the productivity and lowering the manufacturing costs for the cells. Our latest coating system XENIA is designed to accommodate these factors. Depending on the cycle time, the XENIA is able to process between and wafers in 6-inch format per hour on carriers that are 3 meters wide and 3.3 meters long. This trend will continue to shape the development of the industry, which has the aim to consolidate the status of photovoltaics as a reliable and economic source of renewable energy. Therefore, VON ARDENNE will keep working on new high-efficiency cell concepts that will only be possible thanks to our highly productive and precise thin-film deposition technology. With the flexible, modular SCALA, we offer the ideal coating system for research and development tasks as well as for pilot production. MARKET LEADERSHIP HETEROJUNCTION TECHNOLOGY > 1.5 GW * THIN-FILM PHOTOVOLTAICS > 4.5 GW * *INSTALLED MANUFACTURING CAPACITY High-performance TCO contact layers and metallization INTERDIGITATED BACK CONTACTS - IBC This exclusive, highly efficient cell structure offers optimized light absorption by means of an unshaded cell front and electrically functional layers applied structurally to the cell rear. High-performance metallization layers and back side mirror combined with lowest cost of ownership PASSIVATED CONTACTS Next-generation PERC technology this is what you could call such a structure which further minimizes local recombination centers. A smart scheme of functional passivating and contacting layers is applied at the rear side of the cell by means of highly scalable thin-film deposition techniques. Fully integrated solution for the passivating and contacting layer stack TANDEM CELLS The next major step beyond 30 percent cell efficiency will be taken with the help of tandem cell concepts. They feature a stacked cell structure with two diodes. The top cell can be applied to a functional silicon bottom standard cell by means of fully integrated layer stack application and thin-film deposition. High-performance TCO interconnection layer plus full stack of electrical active layers to build up tandem top cell

3 SCALA MODULAR COATING SYSTEM R&D AND PILOT PRODUCTION FOR HJT, IBC, PASSIVATED CONTACTS AND TANDEM CELLS APPLICATION HJT High-performance TCO contact layers and metallization IBC High-performance metallization layers and back side mirror combined with lowest cost of ownership SCALA PilotX Passivated Contacts Fully integrated solution for the passivating and contacting layer stack Tandem Cells High-performance TCO interconnection layer plus full stack of electrical active layers to build up tandem top cell SCALA LabX The SCALA is a modular vacuum coating system with a carrier-based substrate transport. It is primarily designed for crystalline photovoltaic applications on silicon wafers. However, it can also be adjusted for thin-film photovoltaic applications on glass or other applications on various flat substrates. With the SCALA, you can benefit from our experience gained from more than 150 coating systems that we have delivered to the PV industry. It is the perfect choice if you are looking for highly flexible production equipment with a small or medium throughput equipped with proven technology. Thanks to its modular design, the SCALA can be configured according to your needs. We offer two basic configurations of the system. The SCALA LabX is a single-ended tool for horizontal batch processing with or without load lock. It is ideally suited for process and application development at laboratory scale. The SCALA PilotX, on the other hand, is designed for horizontal inline operation and therefore suitable for pilot production. HIGH PROCESS FLEXIBILITY The process chamber can be configured with planar or rotatable magnetrons or with process components for thermal evaporation, PECVD or HWCVD. Ion pre-treatment or heating and cooling units are available upon request. All auxiliary chambers, like entry / exit, buffer and transport chamber, can be upgraded in a similar manner. PROVEN PROCESS COMPONENTS Our proven process technology guarantees excellent layer properties and coating uniformity. VON ARDENNE has been developing and manufacturing magnetrons for various applications for more than 40 years and we have more than 10 years of expierence in thermal evaporation and CVD. HEATING For transparent conductive oxides like ITO or other special applications, the substrate temperature can be precisely controlled in order to achieve reproducible and ideal layer characteristics by optional active heating or cooling. PROCESS CHAMBER The process chamber can be equipped with up to four different process stations in a sputter down arrangement, or with process components for thermal evaporation, PECVD or HWCVD. It enables simultaneous or sequential processing of different material compositions, which is particularly suited for R&D purposes. FLEXIBLE AND DYNAMIC DESIGN The standardized subcomponents enable custom-made configurations with a high degree of flexibility. That means that the system can be adapted to changing processes or requirements. Therefore, our customers are able to act very dynamically and to adapt to the evolution of their product. TECHNICAL DATA Subject to change without notice due to technical improvement. GENERAL FEATURES Throughput LabX PilotX Substrates Substrate size Substrate thickness Coating area on carrier LabX PilotX > 1 carrier per hour 1200 wafers/hour wafers, metal plates, polymer films, glass, others 6 (standard), other substrate sizes possible 3 mm (480 x 480) mm², e.g. (3 x 3) 6 wafers (480 x 800) mm², e.g. (3 x 5) 6 wafers PROCESS COMPONENTS Type of sputter source single or dual rotatable, planar magnetron Thermal evaporation source linear, 800 C PECVD source MHz HWCVD source Number of independent processes 4 (for LabX, PilotX on request) Gases and media e.g. Ar, H 2, O 2, N 2, H 2 O, X Substrate heating Pre-treatment (e.g. Ion etching, ) Automated substrate loading & unloading Automated carrier return system Controlled heating and cooling unit (CHU) Dry air supply (CDA) Carrier storage racks Others on request

4 XEA nova WAFER COATING SYSTEM MASS PRODUCTION FOR HJT, IBC AND TANDEM CELLS APPLICATION HJT High-performance TCO contact layers and metallization IBC High-performance metallization layers and back side mirror combined with lowest cost of ownership Tandem Cells High-performance TCO interconnection layer plus full stack of electrical active layers to build up tandem top cell The XEA nova is a horizontal wafer coating system with a carrier return transport. It is also suited for other small substrates. With this tool, even very thin substrates can be treated on both sides without breaking the vacuum or flipping the substrates. These outstanding features of the XEA nova enable sequenced but also simultaneous treatments of both substrate surfaces. The coater can be equipped with rotatable magnetrons for sputtering and with various evaporation sources. Special pretreatment of the substrates like cleaning or etching can either take place under vacuum or before the substrate enters the vacuum. PROCESS UNITS WITH UP AND/OR DOWN ARRANGEMENT For the substrate treatment, the retractable process units (PUs) in the process chamber can be equipped with various process tools in up and down arrangement. SIMULTANEOUS OR SEQUENCED PROCESSING The XEA nova benefits from our experience gained from more than 150 industry-proven coating systems that we have delivered to the photovoltaics industry. The XEA nova is the perfect choice for customers looking for highly productive and flexible production equipment combined with proven technology and design. VON ARDENNE benefits: Expertise in PVD processing, especially TCO such as ITO Expertise in large-area deposition Expertise in process upscaling Global network and worldwide service PROVEN MAGNETRON TECHNOLOGY Proven rotatable magnetron technology guarantees excellent target utilization. For more than 40 years, VON ARDENNE has been developing and manufacturing proprietary magnetrons for all kinds of applications. The combination of up and down arrangements facilitates simultaneous or sequenced processing of both substrate sides without additional handling or breaking the vacuum. CONVENIENT AND QUICK MAINTENANCE The optimized machine design enables easy access to the process environment and the auxiliary chambers. Due to the plug-and-play design of the process units, they can be maintained during production, a fact that shortens the green to green times even more. BROAD THROUGHPUT RANGE AND HIGH PROCESS FLEXIBILITY Depending on the market and process demands of the customer, the maximum substrate throughput can be exceptionally high. The process chamber can be configured with rotatable magnetrons, thermal evapo rators as well as ion pretreatment or heating and cooling units. All auxiliary chambers, like entry/exit, buffer and transport chamber, can be upgraded in a similar manner. FLEXIBLE AND DYNAMIC IN PRODUCTION TECHNICAL DATA Subject to change without notice due to technical improvement. GENERAL FEATURES Throughput Substrates Substrate size Substrate thickness Coating area on carrier SPUTTERING SYSTEM Magnetron type Sputter arrangement Deposition type Number of independent process 5500 substrates/hour [> 5500 substrates/hour for IBC] wafers, metal plates, polymer films, others 6 (standard), other substrate sizes possible 3 mm (1 x 1.7) m 2, e.g. (6 x 9) 6 wafers single or dual rotatable sputter up and sputter down DC, pulsed DC, AC unlimited Gases and media (e.g. Ar, O 2, N 2, H 2 O, X) Target utilization > 80 %, depending on process & material Automated substrate loading & unloading Automated carrier return system Controlled heating and cooling unit (CHU) Dry air supply (CDA) Carrier storage racks Others on request PRECISE TEMPERATURE CONTROL OF SUBSTRATES For transparent conductive oxides like ITO or other special applications, the substrate temperature can be precisely controlled in order to achieve reproducible and ideal layer characteristics. The standardized subcomponents enable custom-made configurations with a high degree of flexibility. That means that the system can be adapted to changing processes or requirements. Therefore, our customers are able to act very dynamically and to keep their production in accordance with the evolution of their product. OPTIONAL PROCESS FEATURES Substrate heating Pre-treatment (e.g. Ion etching ) Alternative deposition technologies (thermal evaporation, PECVD, ) AUTOMATION OPTIONS Configuration Automation system Substrate feeding single- or double-end fully automatic cassette, box, other

5 XENIA WAFER COATING SYSTEM HIGH-VOLUME MASS PRODUCTION FOR IBC, PASSIVATED CONTACTS AND TANDEM CELLS APPLICATION IBC High-performance metallization layers and back side mirror combined with lowest cost of ownership Passivated Contacts Fully integrated solution for the passivating and contacting layer stack Tandem Cells High-performance TCO interconnection layer plus full stack of electrical active layers to build up tandem top cell The XENIA is an inline coating system based on our proprietary largearea coating technology. As the coater is very wide and can therefore process many substrates at the same time, it is especially suited for high productivity applications at very low costs. It is suited for largearea glass substrates, silicon wafers and for other small and even very thin substrates. Thanks to its modular design, the XENIA can be equipped with rotatable magnetrons for the sputter deposition of high-performance TCO layers or several other materials, such as metals and metal oxides. It can also be adapted for other deposition technologies. The substrates can also be pre-treated by cleaning or etching, either under vacuum or before it enters the vacuum. The XENIA benefits from our experience gained from delivering more than 150 coating systems to the photovoltaics industry. It is the perfect choice for customers looking for highly productive and flexible production equipment combined with proven technology and design. HIGHEST ECONOMY OF SCALE Due to its very large width, the productivity of the tool is exceptionally high while the process utilization is brought to a maximum. Thus, the XENIA offers best cost of ownership by providing applicable economy of scale. PRECISE TEMPERATURE CONTROL OF SUBSTRATES For transparent conductive oxides like ITO or other special applications, the substrate temperature can be precisely controlled in order to achieve reproducible and ideal layer characteristics by optional active heating or cooling. EDGE EXCLUSION, FULL AREA, ALL AROUND & BEVEL The innovative VON ARDENNE carrier concept is very flexible and enables the deposition on substrates with full or partial edge exclusion. Furthermore, the substrate can be coated on the full area and all around, including the bevel. TECHNICAL DATA Subject to change without notice due to technical improvement. GENERAL FEATURES Throughput Substrates Substrate size Substrate thickness Coating area SPUTTERING SYSTEM > wph ( wph) glass, wafers, metal plates, polymer films, others 6 (standard), other substrate sizes possible 3 mm 3.0 m x 3.3 m PROVEN MAGNETRON TECHNOLOGY Proven rotatable magnetron technology guarantees excellent target utilization. For more than 40 years, VON ARDENNE has been developing and manufacturing proprietary magnetrons for all kinds of applications. CONVENIENT AND QUICK MAINTENANCE The optimized machine design enables easy access to the process environment and the auxiliary chambers. Magnetron type Sputter arrangement Deposition type Number of independent processes Gases and media single or dual rotatable, planar sputter down DC, pulsed DC, AC unlimited e.g. Ar, H 2, O 2, N 2, H 2 O, X Automated substrate loading & unloading Automated carrier return system Controlled heating and cooling unit (CHU) Dry air supply (CDA) Carrier storage racks PROCESS CHAMBER FLEXIBLE AND DYNAMIC IN PRODUCTION Target utilization > 80 % Others on request The process chamber can be equipped with five or more different process stations in a sputter down arrangement. It enables simultaneous processing of different material compositions, such as TCO s, TCO stack layers and/or combinations of TCO, metal oxides and metal stacks. The standardized subcomponents enable custom-made configurations with a high degree of flexibility. That means that the system can be adapted to changing processes or requirements. Therefore, our customers are able to act very dynamically and to keep their production in accordance with the evolution of their product. OPTIONAL PROCESS FEATURES Substrate heating Pre-treatment (e.g. Ion etching ) Alternative deposition technologies (e.g. evaporation, PECVD...) AUTOMATION OPTIONS Configuration Automation system Substrate feeding single- or double-end fully automatic cassette, box, other

6 COMPLETE EQUIPMENT SOLUTIONS HIGH-EFFICIENCY SOLAR CELL MANUFACTURING Entering a new market or applying a new technology is always exciting, but also risky. Therefore, it is best to team up with partners that possess the basic know how and provide support for the first steps on the way to success. VON ARDENNE provides equipment solutions for lab-scale and industry-scale silicon HJT solar cell manufacturing in a consortium with the best companies in their particular technologies. All of those companies are renowned experts in their field. Thus, the consortium combines all their expertise and the best equipment available, without the compromises you would have to accept when purchasing all the equipment from a single equipment manufacturer. Moreover, the consortium is so flexible that your local or preferred suppliers or technologies can be easily integrated, with the exception of those regarding the key processes. The best-in-class consortium concept gives you the freedom to choose a constellation and support that best fit your individual requirements. The consortium is represented by a general contractor, who acts as organizational link between the customer and all partners. You could also get direct support from the key companies and select additional partners according to your preferences, for example to ensure a certain share of local content in your investment. In contrast to traditional turn-key solutions offered by a single equipment manufacturer, this consortium concept combines flexibility with the security of being provided with best-in-class technology. PILOT LINE FOR RESEARCH, DEVELOPMENT & PILOT PRODUCTION PRODUCTION LINE FOR HIGH-VOLUME MANUFACTURING WET CHEMICAL/TEXTURE PECVD PVD METAL TESTING The minimal (real) capacity of a production line will be 150 megawatts per year. It can be increased to meet the customer requirements for total production capacity. The full-scale production line concept consists of fully-automated, interlinked equipment with matching: Cycle times Throughput Up times Maintenance Optional remote manufacturing control from a control room Consistent manufacturing execution system (MES) RAW SILICON WAFERS HIGH-EFFICIENCY SOLAR CELLS CHALLENGES OF HJT SOLAR CELL MANUFACTURING & DEVELOPMENT As it requires only five major process steps, it is relatively easy to start manufacturing silicon heterojunction solar cells. However, every process has its specific challenges and the interaction between all processes need to be kept in mind for optimization. It is also necessary to continuously develop the technology further in order to reach higher conversion efficiencies and to lower manufacturing costs. In contrast to research and development (R&D) on a laboratory level, process development and technology assessments for industrial use require industrial-scale manufacturing abilities. THE ANSWER: A LAB-SCALE HJT PILOT LINE A lab-scale HJT pilot line is the best base for developing technology to be transferred to full-scale production and to support production lines that are already in operation. It consists of smaller versions of all the equipment used for the key processes in full-scale production, including equipment for cleaning and texturing, for a-si PECVD, for TCO and metal PVD, and for printing and curing. All these tools represent full-scale production systems, and enable the process transfer to their bigger counterparts. MINIMIZING RISKS WITHOUT LIMITING INNOVATION The risks of up-scaling new developments have to be minimized, but engineers and scientists need to be able to explore innovative ideas. Therefore, the tools and manufacturing logistics are designed to run only small batches for R&D purposes, but allow simulated full-scale production over several days or weeks, even in multi-shift operation. PILOT PRODUCTION: RECOMMENDED FEATURES AND DUAL USE CONCEPT For pilot production it is recommended to include semi-automated testing tools, several work centers for offline inspections and carts for wafer or cassette transfer and buffering. It is also advisable to use equipment with higher throughput, automated transfer in ultra clean and inert environment between wet-chemical treatment, PECVD and PVD. The requirements of developing new processes and demonstrating their transferability into full-scale production require a sophisticated manufacturing concept for lab-scale pilot lines. We call it Dual Use Concept, since it allows R&D work as well as production-like manufacturing. All the necessary automation and measurement technology for fullscale production is optional, such as incoming wafer inspection, waferto-cassette loader, wafer or cassette transfer or buffering, automated final testing and sorting or packing. PILOT LINE PRODUCTION LINE Tools Process, quality, (automation) Process, quality, automation, logistics Interlinked tools Automation of tools Automated transfer Production-like recipe management Production-like control software Semi-automated Production-like equipment (smaller) Manufacturing execution system Remote control - Batch size 25 (and 50) wafers 100 wafers Throughput 25 wafers/h to 150 wafers/h wafers/h to wafers/h Name plate capacity 5 MW/a 100 MW/a to 500 MW/a

7 GERMANY USA DRESDEN PHOENIX CHANDLER TOLEDO PERRYSBURG CHINA JAPAN SHANGHAI OSAKA VIETNAM HO CHI MINH CITY MALAYSIA KULIM PRODUCT TOPICS PRODUCT INDEX WHO WE ARE & WHAT WE DO COMPONENTS VON ARDENNE develops and manufactures industrial equipment for vacuum coatings on materials such as glass, wafers, metal strip and polymer films. These coatings give the surfaces new functional properties and can be between one nanometer and a few micrometers thin, depending on the application. Our customers use these materials to make high-quality products such as architectural glass, displays for smartphones and touchscreens, solar modules and heat protection window film for automotive glass. We supply our customers with technologically sophisticated vacuum coating systems, extensive expertise and global service. The key components are developed and manufactured by VON ARDENNE itself. Systems and components made by VON ARDENNE make a valuable contribution to protecting the environment. They are vital for manufacturing products which help to use less energy or to generate energy from renewable resources. SALES CONTACTS SERVICE CONTACTS WORLDWIDE SALES AND SERVICE VON ARDENNE GmbH (headquarters) I Am Hahnweg 8 I DRESDEN I GERMANY Sales: +49 (0) I sales@vonardenne.biz Service: +49 (0) I support@vonardenne.biz VON ARDENNE Vacuum Equipment (Shanghai) Co., Ltd. I I I sales-vave@vonardenne.biz; support-vave@vonardenne.biz VON ARDENNE Malaysia Sdn. Bhd. I I I sales-vama@vonardenne.biz; support-vama@vonardenne.biz VON ARDENNE Japan Co., Ltd. I Tokyo office I I I sales-vajp@vonardenne.biz; support-vajp@vonardenne.biz VON ARDENNE Japan Co., Ltd. I Osaka office I I I sales-vajp@vonardenne.biz; support-vajp@vonardenne.biz VON ARDENNE North America, Inc. I Ohio office I I I sales-vana@vonardenne.biz; support-vana@vonardenne.biz VON ARDENNE North America, Inc. I Arizona office I I I sales-vana@vonardenne.biz; support-vana@vonardenne.biz VON ARDENNE Vietnam Co., Ltd. I I sales-vavn@vonardenne.biz; support-vavn@vonardenne.biz Photos VON ARDENNE GmbH ENGLISH 03/2018