PVcomB will help mass-produce the raw photovoltaic materials used in Wysips® technology

A Wysips&reg; component can be integrated into a watch and extend its battery life. </p>

A Wysips® component can be integrated into a watch and extend its battery life.

© Sunpartner Technologies

Sunpartner Technologies and Helmholtz-Zentrum Berlin sign license agreement

The French company Sunpartner Technologies has been developing innovative solar solutions for nearly 10 years. One of these is Wysips,® an invisible or transparent photovoltaic film that transforms any surface into a solar panel that can generate electricity using the sun’s light. To create Wysips® Crystal and Wysips® Reflect, Sunpartner Technologies paired with the German research centre Helmholtz-Zentrum Berlin (HZB) to develop a special solar material that could be integrated into the company’s technology.

The Wysips® Crystal component is an ultra-thin, transparent glass that combines photovoltaic material with an optical system adapted to display screens like those used in cell phones and connected watches. The component provides the device with a constant power reserve, ensures that certain applications work properly, and independently powers certain operations. For example, exposing a phone to the sun for three minutes will give you one minute of call time.

The goal of Wysips® Reflect is to make connected watches last as long as possible in between recharges. It extends battery life by up to 50% on products it has been applied to, depending on product energy use. The component is completely invisible and can be integrated into a digital or analog watch without affecting its design.

The Competence Centre Thin-Film- and Nanotechnology for Photovoltaics Berlin (PVcomB) at Helmholtz-Zentrum Berlin (HZB) is a trusted supplier of photovoltaic cells and was involved in developing one of the key building blocks in these two Wysips® components: a special photovoltaic material compatible with the transparency process developed by Sunpartner Technologies.

HZB relied on Sunpartner Technologies’ specifications to determine the stacking order that makes up the special photovoltaic material, the quality and thickness of the glass substrate, the formats, and the tolerance levels for cleanness and dust. The result is a turnkey solution, called a “photovoltaic stack,” that Sunpartner Technologies renders transparent or invisible to the naked eye by means of its own proprietary processes.

The French company, whose production unit is located in Rousset, is currently preparing to mass-produce its components. The company and HZB therefore signed a license agreement that allows Sunpartner Technologies to use HZB’s expertise to develop Wysips® Crystal and Wysips® Reflect.  

Franck Aveline, VP Consumer Product Line at Sunpartner Technologies, said, “We are very pleased with our collaboration with the Helmholtz-Zentrum Berlin laboratory. They sought to understand us and meet our needs by sharing their expertise and technical abilities with us in the field of thin photovoltaic film. This agreement is a new step we’re taking together towards industrializing Wysips® solutions while still maintaining control of the key technological building blocks we need to develop.”

Bernd Stannowski, senior scientist at HZB, said, “This collaboration allows us to bring our high-efficiency thin-film silicon solar cell technology developed over the past five years to industrialization. With Sunpartner we found an ideal partner to further develop and transfer to production.” 

About Sunpartner Technologies:

Sunpartner Technologies develops and integrates innovative and invisible photovoltaic solutions for the consumer electronics (wearables, mobile devices, connected objects), building (Smart Cities), and transportation (automobile, aviation, maritime) markets. Its Wysips® technology (short for “What You See Is Photovoltaic Surface”) captures solar energy and converts it to electricity so that ordinary objects require no or almost no outside energy source. The company puts its expertise to work to create smart, attractive surfaces around the world. Sunpartner Technologies was founded in 2008 in Rousset, France, and today has 65 employees and a large portfolio of patents. The company has raised 45 million Euros since its creation.

More information on PVcomB


You might also be interested in

  • Stability of perovskite solar cells reaches next milestone
    Science Highlight
    Stability of perovskite solar cells reaches next milestone
    Perovskite semiconductors promise highly efficient and low-cost solar cells. However, the semi-organic material is very sensitive to temperature differences, which can quickly lead to fatigue damage in normal outdoor use. Adding a dipolar polymer compound to the precursor perovskite solution helps to counteract this. This has now been shown in a study published in the journal Science by an international team led by Antonio Abate, HZB. The solar cells produced in this way achieve efficiencies of well above 24 %, which hardly drop under rapid temperature fluctuations between -60 and +80 Celsius over one hundred cycles. That corresponds to about one year of outdoor use.
  • NETZWERKTAG der Allianz für Bauwerkintegrierte Photovoltaik
    NETZWERKTAG der Allianz für Bauwerkintegrierte Photovoltaik
    Der 2. Netzwerktag der Allianz BIPV findet statt am

    10:00 - ca. 16:00 Uhr

    Das HZB, Mitglied in der Allianz BIPV, freut sich, Gastgeber des branchenweiten Austausches zu sein. Neben Praxiserfahrungen von Vertretenden aus Architektur, Fassadenbau und angewandter Forschung steht der direkte Austausch und die Diskussion im Vordergrund.

  • Webinar | Ausgezeichnete Solararchitektur: Ausgewählte Projekte aus dem Architekturpreis gebäudeintegrierte Solartechnik 2022
    Webinar | Ausgezeichnete Solararchitektur: Ausgewählte Projekte aus dem Architekturpreis gebäudeintegrierte Solartechnik 2022
    Die Solarenergienutzung an Gebäuden ist ein zentrales Thema auf dem Weg zur Klimaneutralität. Solartechnische Systeme sollten selbstverständliche Bestandteile innovativer Gebäudehüllen wie auch Bausteine energetischer Sanierung sein.