OSA-Direct
Wednesday, 29 Mar 2017

Solliance sets world record of 12.6% efficiency for roll-to-roll produced perovskite solar cells

All process steps on this roll-to-roll line were performed using low cost materials whilst keeping the process temperatures below 120 oC

9 Mar 2017 | Editor

Solliance has announces the demonstration of an industrially-applicable roll-to-roll process for the production of solar cells, achieving a "record" 12.6% conversion efficiency on cell level. Solliance believes that this exciting development paves the way towards an accelerated market introduction of this attractive new source of renewable energy.

Solliance and its research partners focus on using scalable, industrial processes towards the fabrication of large-area modules, eventually suitable for seamless integration in a broad variety of PV systems.

The roll-to-roll (R2R) process was developed for both the electron transport and the perovskite layers on the new Solliance dual R2R coating line, as developed by Solliance with its partners VDL Enabling Technologies Group (VDL ETG), Smit Thermal Solutions and Bosch-Rexroth.

Solliance - Roll-to-roll printing equipment

Figure: Solliance - Roll-to-roll printing equipment

Perovskite microcrystals are a promising material to make high-yielding, thin-film solar cells. They can be processed into thin, light-weight and potentially semitransparent modules that could eventually be integrated in building materials such as windows or curved construction elements.

The in-line roll-to-roll coating, drying and annealing processes were executed at a linear speed of 5 m/min on a 30 cm wide commercial PET/ITO foil and under ambient conditions. After applying a newly developed off-line single device finishing step, individual solar cells of 0.1 cm2 achieved efficiencies of up to 12.6%, measured under maximum power point tracking conditions during 5 minutes.

All process steps on this roll-to-roll line were performed using low cost materials whilst keeping the process temperatures below 120 ⁰C, demonstrating the high volume production potential of this new emerging thin film PV technology.

Solliance - Perovskite flexible solar cells

Figure: Solliance - Perovskite flexible solar cells

Pim Groen, Professor of SMART materials at the Technical University of Delft and Program Manager at Holst Centre/Solliance, said, "The demonstration of R2R processing at 5 m/min of perovskite layers for solar cells indicates that high-volume production, and hence with an expected very low cost, will be possible in the future." Pim "These results show that the Solliance research partners, with their in depth know-how on processing of thin film PV devices and their extensive sheet-to-sheet and roll-to-roll pilot production infrastructure, are excellently placed to realize this upscaling."
Willem van der Leegte, VDL’s CEO, said, "I am very pleased with this result. It shows that combining process know-how at Solliance with capabilities of high-tech equipment companies in this region can deliver very powerful results that potentially open up completely new business opportunities."
Richard Caldwell, Managing Director Dyesol, said, "Dyesol is very pleased with this breakthrough; we are committed to developing the industry standard for R2R Perovskite Solar Cell (PSC) PV manufacturing in conjunction with Solliance and this result is an important step along this route. This pioneering work confirms that Dyesol and its partners retain a global leadership position in the industrialisation of PSC Technology, and in particular, its continuous R2R processing for flexible BIPV applications – a core element of its commercialization strategy."
Ronn Andriessen, Program Director at Solliance, said, 2The challenge is to upscale perovskite cells to larger size, industrially-manufacturable modules with high efficiency and long lifetime at low cost. These 12,6% R2R up-scaled perovskite-based solar cells are a first and important step in this development. With this result, we are confident to quickly boost the up-scaled perovskite based PV module efficiency above 15% by using low cost materials and processes. Furthermore, we are working hard to improve the stability of these devices under real life operational conditions."

The current world record efficiency of a small lab scale perovskite-based PV cell is 22.1%.

Thanks to its high power conversion efficiency and flexible and light-weight nature, thin-film perovskite PV technology is widely considered as a future key technology for the buildingintegrated photovoltaics (BIPV) market. It can be seamlessly integrated in building elements, on curved surfaces and can be made semitransparent.

Combining the industrially-applicable manufacturing processes with Solliance’s proprietary back-end interconnection process allows the creation of perovskite-based PV modules with any form and shape and any desired currentvoltage output. These properties will enable customized and aesthetic integration of solar modules for infrastructure, building and vehicle-integrated PV products.

Solliance is a cross-border Dutch-Flemish-German thin-film photovoltaics research initiative conducting advanced research on the development of perovskite-based PV modules and its applications with its industrial partners Solartek, Dyesol and Panasonic. With these results the Solliance partners demonstrate the effectiveness of their collaboration in the development of perovskite based PV modules.

Source: Solliance

www.solliance.eu    www.vdletg.com    www.boschrexroth.com   


About Solliance (pv network)

Solliance is a partnership of R&D organizations from the Netherlands, Belgium and Germany working in thin film photovoltaic solar energy (TFPV). In order to strengthen the region’s position as a world player in PV, Solliance is creating the required synergy by consolidating and coordinating the activities of 250 researchers in industry, at research institutes and universities. Various state-of-the-art laboratories and pilot production lines are jointly used for dedicated research programs which are executed in close cooperation with the solar business community.

Solliance partners are: ECN, imec, TNO, Holst Centre, TU/e, Forschungszentrum Jülich, University Hasselt and Delft University of Technology./p>

Solliance offers participation in its research programs and opens up its lab facilities to new entrants, either from industry or in research. On the basis of clear Intellectual Property (IP) agreements, each industrial partner can participate in this research effort, or alternatively, hire equipment and experts to further develop its own technology.

Source: Solliance (pv network)

About Bosch-Rexroth

Economical, precise, safe, and energy efficient: drive and control technology from Bosch Rexroth moves machines and systems of any size. The company bundles global application experience in the market segments of Mobile Applications, Machinery Applications and Engineering, and Factory Automation to develop innovative components as well as tailored system solutions and services. Bosch Rexroth offers its customers hydraulics, electric drives and controls, gear technology, and linear motion and assembly technology all from one source. With locations in over 80 countries, more than 31.100 associates generated sales revenue of approximately 5.4 billion euros in 2015.

Source: Bosch-Rexroth

About Vdl Etg

VDL Enabling Technologies Group (VDL ETG) is a contract manufacturing partner operating worldwide in many high-tech markets like semiconductors, thin-film photovoltaics, analytical instruments, medical systems, aerospace, defence. VDL ETG manufacturers parts, modules and fully-integrated systems in 5 volume factories located in The Netherlands, Switzerland, Suzhou (China), and Singapore, and has strong design and engineering capabilities to support its customers throughout the entire lifetime of their products. Two dedicated business lines, VDL ETG Research and VDL ETG Projects, have a recognized track record in the series manufacturing of 'high-mix low-volume' products and in the design and realization of prototypes and first-of-a-kind complex tools and production lines.

VDL ETG is part of VDL Groep, an international, industrial company active in the development, production and sales of semi-finished and finished products, buses and coaches, and assembly of cars. Headquartered in Eindhoven, The Netherlands, and exceeding a turnover of Eur2.6 billion, VDL Groep supervises its more than 85 subsidiaries by entitling them to exercise a high level of autonomy and responsibility for results.

Source: Vdl Etg


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