Technology

With conventional silicon-based solar cells stagnating at around 20 percent efficiency in a highly commoditized market, perovskite tandem solar cell technology is a promising solution for boosting solar cell efficiency.

Perovskite

With conventional silicon-based solar cells stagnating at around 20 percent efficiency in a highly commoditized market, ​new developments are vital to further advance solar energy. A promising solution for boosting solar cell efficiency is perovskite tandem solar cell technology. ​

Next generation photovoltaics

Perovskites are synthesized materials with high potential as their structure makes them perfect for enabling low-cost and efficient photovoltaics.

While conventional solar cells are most effective at the low-energy end solar spectrum, adding a layer of perovskite allows solar cells to better utilise the high-energy end of the spectrum. ​​Since perovskite tandem solar cells provide a much wider optical bandgap than conventional solar cells, they are a perfect option for being a top cell in a tandem solar cell. ​​Learn more about perovskite by watching the video.

Tandem

So how does perovskite
work in solar cells?

It starts, of course, with the sun - our greatest source of unlimited energy.​​Watch the video to find out more.

2T

Perovskite layer directly on solar cells.​The top cell is deposited directly on top of the bottom cell, both being monolithically integrated in one cell.​

4T

Perovskite layer on glass.​The top and bottom solar cells operate independently.

Perovskite-Silicon Tandem:
​>25% efficiency increase

Perovskite tandem solar cell technology has the potential to increase solar cell efficiency by 25% compared with conventional silicon-based solar panels, making the technology a potential game changer for the solar industry. Tandem solar cell technology typically comes in 2-Terminal (2T) and 4-Terminal (4T) configurations.

Impact

Higher efficiency =
More power in the same space

By increasing solar panel efficiency by at least 25% with our PV Power Booster technology, more power can be produced using the same amount of space, while still having a manufacturing cost per watt in the same range as regular solar cells.

Convert a commodity into a premium product​​

PV Power Booster technology allows solar panel manufacturers to convert a commodity product into a premium product by integrating the technology using our PV Power Booster Line solution. ​​Watch the video to see how our PV Power Booster technology makes an impact within different animated examples. ​

Significantly Lower
​Carbon Footprint

The CO2 footprint per kWh is reduced since the carbon footprint of the additional perovskite cell is negligible compared to a silicon PV module, as it adds only 10.6 kg CO2 eq/m2 to the silicon’s approximately 210 kg CO2 eq/m2, giving savings of about 0.065  Million tonnes CO2 equivalents per installed GW.​

Perovskite-silicon tandem modules can outcompete current commercial modules on energy and environmental performance: while the carbon footprint of a silicon module produced in Europe is estimated to about 420 kg CO2-eq/kWp, we aim to reach 80% of this footprint on a perovskite-silicon module.

Circular Economy

Our technology aims to follow the zero-waste concept and develop processes for true circular economy​​Equipment: Compatible with future lead-free perovskite technology​Module: Designed for recyclability, repairability and reusability​Production process: Recyclability of all production waste that arises in the manufacturing of the new module generation ​Recycling: Minimized lead contamination during production and maximized recycling of lead from Pk-solar cell of 99.2%