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Production process

Installing the back contact

Installing the back contact

The back contact of the solar module consists of a molybdenum coating applied to the substrate glass using cathode sputtering.

Structuring 1

Patterning 1

The molybdenum coating is divided into 150 cells.

CIGS coating

CIGS coating

A layer of copper, indium, gallium and selenium is applied as a light absorber using a co-evaporation technique. A buffer layer is then deposited via a chemical bath.

Structuring 2

Patterning 2

Further structuring is needed to interconnect the 150 cells.

TCO

TCO

A conductive overlay of zinc oxide is applied as a front contact using cathode sputtering.

Structuring 3

Patterning 3

A third structuring process is needed to interconnect the 150 cells. 

Structuring 3

Patterning 4

In order to maintain Solibro’s high reliability standards while continuously increasing the module power, the active area of the module is divided into different segments by an additional scribing operation. 

Edge ablation

The coated substrate glass now takes on its final form. It is subjected to a downstream two-stage edge ablation process.

DRILLING / SEAMING

Contact holes are drilled so that the contact strip can subsequently be routed to the back.

Contacting / edge sealing

Two contact strips are installed and the edges are sealed with butyl tape.

Marriage

The front glass, substrate glass and EVA film are "married" to each other.

Lamination

All components are laminated together and then cooled for the subsequent process steps.

Junction box

The contact holes are sealed and then the junction box is mounted.

High voltage tester / solar simulator

The electrical insulation of the finished modules is tested using a high voltage tester.  The solar simulator determines the output of the modules.

FRAMING / HIGH VOLTAGE TESTER (OPTIONAL)

A part of the produced laminates is framed by one of our fully automated production tools and quality tested by a high voltage inspection afterwards.

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PACKAGING / FINAL INSPECTION

After labeling and a final inspection the Solibro modules are ready for packaging and to be sent to our customers.

Contact

Solibro GmbH
OT Thalheim
Sonnenallee 32-36
06766 Bitterfeld-Wolfen
Germany

Telefon:
+49 (0)3494 3840-93000
Email:
info@solibro-solar.com