Polymer coating
Protects the CIGS technology from external elements
Front electrode
Provides front-end charge for CIGS technology electricity to move
CIGS technology
Thin-film photovoltaic (PV) layer of the module which collects light and turns it into electricity
Back electrode
Provides back-end charge for CIGS PV electricity to move
Module backing substrate
The layer that is bonded or mounted with roofing or other structure

Introducing CIGS technology

Ultra-thin, flexible & remarkably lightweight

Powering the future

Today, the majority of solar installations use silicon (Si) based photovoltaic (PV) panels. However, silicon panels are often impractical in applications where the weight and/or the aesthetics of the system are critical. These applications include light-weight or non-load bearing roofs, curved roofs, carports and tensile fabric structures. At Solar Cloth Company, we use CIGS (Copper Indium Gallium Selenide) thin-film technology as the basis for our solar PV systems.

CIGS absorbs light for longer

CIGS has a more extensive absorption spectrum than Si. This is because there are four different elements in CIGS: Copper, Gallium, Indium and Selenide. Whereas Si only has one element: Silicon. 

Si panels also absorb light towards the lower energy end of the spectrum and only within the visible light spectrum. Whereas, by contrast, CIGS has a much better spectral response that is closely aligned with the entire spectrum of light. This means that CIGS absorbs light for longer throughout daylight hours.

Improved low-level light performance

Captures more light for longer throughout daylight hours
CIGS captures more light on non-south facing solar PV systems
CIGS panels capture more light on cloudy days

Higher shading tolerance

Silicon is very sensitive to small amounts of shading, CIGS on the other hand is much more tolerant to higher levels of shading. When shaded, CIGS technology will continue to produce efficient amounts of electricity, whereas Si will not.

A 20% shaded panel results in a reduction of electricity produced


A 20% shaded panel results in a reduction of electricity by


Lower annual performance loss

CIGS technology has an extremely low degradation rate, less than half that for Si. Using CIGS you can guarantee that there will be less of an impact upon the return on investment as the technology grows older.

Compared to 1% for Si, the drop in electricity generated annually is


Sustainably manufactured, beautifully engineered

CIGS technology uses deposition techniques, similar to printing, to make the thin-film photovoltaic panels. This means that panels can be made ultra-thin and only what is required to make the panels is used.

Less material wastage - only deposit what you need
Less processing steps - deposit straight onto substrate
Lower temperature process and embodied energy - 50% less energy consumption

CIGS technology translates into new applications

CIGS thin-film technology opens up opportunities for solar panels to be applied where previously they could not: non-load bearing roofs, curved roofs, lightweight carports and tensile fabric structures.

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