Our GeneCIS module 

The core of every solar installation is the generally easily recognisable module. At Würth Solar we produce innovative GeneCIS modules at our factory in Schwäbisch Hall, Germany. You will immediately see that these modules differ from silicon-based modules by their appearance: while silicon modules have the familiar black/blue design with an obvious cell structure, a GeneCIS module from Würth Solar stands out because of its even black surface and pinstripe design. Due to their appealing appearance, the modules are very suitable for incorporating into architectural designs. 

Besides their outstanding aesthetic values GeneCIS modules have many other advantages that are very important to ensure the long life of your solar installation. These include more protection against the effects of weather for the module with the stable glass-glass compound structure, the outstanding energy yields because of the optimum shadow-tolerant cell structure, and an excellent temperature coefficient.

See the Top 12 benefits of GeneCIS solar modules 

What is a CIS solar module?

For physical reasons a single CIS solar cell can only develop less than one volt, roughly 0.6 to 0.8 volts. Consequently, several solar cells are connected in series.
This creates a module which, according to the individual cells, has a higher operating voltage. In CIS technology this serial connection – also called integration – can be implemented very advantageously during the production process. 

In other words, a CIS solar power module is a "battery" of solar cells created through so-called monolithic integration, whose voltage and current strength are predetermined by the number and size of the cells and can be adapted to suit the planned use of the module.

Würth Solar thus utilises the possibility of adaptation and optimally coordinates the electrical properties of the GeneCIS modules to the system technology that is used.  

What is special about these CIS materials?  

Like many naturally occurring materials, these compounds are very stable from a chemical aspect. They have semi-conducting properties and absorb sunlight very effectively – they are photoelectrically active. This is what makes these materials suitable for manufacturing solar cells. 

By varying the proportions of the elements in the compound it is possible to obtain special properties that are adapted optimally to the spectrum of sunlight (in the jargon: optimising the band gap and the p-n transition).

What does CIS stand for?

CIS is an artificial word - an abbreviation for a chemical compound comprising the first letters of the elements contained in the compound.
A typical compound is copper indium diselenide: C – Cu (copper), I – indium, S – selenium. Because of its crystal structure CIS, with the chemical formula CuInSe2, belongs to the chalcopyrite family. Würth Solar is the first manufacturer in the world to implement this technology on a large scale in outstanding quality at its location in Germany.