Solliance improves perovskite roll-to-roll processing with record efficiencies

Share on facebook
Share on twitter
Share on linkedin
Share on reddit
Share on email
The largest module of 160 cm2 achieved an aperture stabilized efficiency of 10.1%. Image: Solliance

The thin-film photovoltaics research initiative Solliance, which is focused on the commercialisation of perovskite thin-film technology, has fabricated small cells with industrially-applicable, roll-to-roll (R2R) production processes, setting a number of new conversion efficiency records. 

Solliance, which includes commercial partners Panasonic, GreatCell (formerly Dyesol) and Solartek said that the perovskite material was successfully processed at temperatures below 120 °C and selected two foil zones of each about 10 meters in length with a visual good perovskite quality. The perovskite foils then went through a range of processing settings to produce 20 individual 0.1 cm2 solar cells in each designated foil zone.

For each zone six 2 x 2 cm2 (or 4 cm2) aperture modules, four 3.5 x 3.5 cm2 (or 10.5 cm2) aperture modules and one 13 x 12.3 cm2 (or 160 cm2) aperture module were produced by laser scribing with 100% yield over all 22 fabricated modules. 

The Solliance partners noted after processing the R2R cells that in one zone the maximum stabilized efficiency reached 13.5% (measured under maximum power point tracking conditions over 5 minutes) and in the second zone a maximum of 12.5% was reached. The average stabilized cell efficiency in the best performing zone was about 1% higher than the previously reported run in March 2017.

For the modules prepared from the best performing zone, the smaller modules of 4 cm2 showed a maximum aperture stabilized efficiency of 12.1%, with an average of 11.1% across the six modules. 

The larger modules of 10.5 cm2 achieved a maximum aperture stabilized efficiency of 12.2 % with an average of 11.0% across the four modules. 

However, the largest module of 160 cm2 was said to have achieved an aperture stabilized efficiency of 10.1%, which highlights the progress made to ultimately achieve high-volume production of perovskite solar cells.

“These results show that the developed R2R process is very reproducible over different runs in time, which is very important for future reliable manufacturability,” noted Pim Groen, Professor of SMART materials at the Technical University of Delft and Program Manager at Holst Centre/Solliance.

Richard Caldwell, Managing Director of Greatcell Solar added, “The metals project at Solliance is hitting its targets. The successful translation of this PSC technology from the laboratory to the factory will open up massive commercial opportunities.”

Researchers at Solliance noted that further material optimisation and processing improvements were expected to deliver efficiencies over 15% for modules up to 30×30 cm2. 

Critically for perovskite materials, Ronn Andriessen, Program Director at Solliance, said, “Our research shows that optimizing materials and processes is steadily improving the stability of perovskite devices under real life operational conditions.” 

Read Next

March 15, 2021
Among the three n-type options (n-PERT/TOPCon, IBC, HJT), there is a growing belief that the smart money will be on heterojunction.
February 1, 2021
Panasonic has announced plans to withdraw from manufacturing heterojunction (HJT) cells and modules with the closure of its manufacturing plants in Malaysia and Shimane Prefecture, Japan.
July 15, 2020
A round-up of policy developments and project news from the US, where Massachusetts’ SMART programme has doubled its capacity and plans to launch a regional imbalance market in the Southeast have come under scrutiny.
April 23, 2020
The slowdown of the global economy in 2020 is ultimately going to impact the guidance and forecasting offered by all PV manufacturers during the first couple of months of the year, prior to the effects of COVID-19.
March 4, 2020
PV Tech is to hold the first ever conference, dedicated specifically to heterojunction (HJT) solar cell technology in manufacturing. The event will occur over two days, on 11-12 June 2020, in St. Petersburg in Russia.
February 26, 2020
New York State has offered employees of Panasonic working at Tesla’s Gigafactory 2 plant in Buffalo assistance in finding new jobs as the Japanese electronics giant is expected to shut down solar panel operations at the facility.

Subscribe to Newsletter

Upcoming Events

Upcoming Webinars
December 21, 2021
Free Webinar
Solar Media Events
February 1, 2022
London, UK
Solar Media Events
February 23, 2022
London, UK
Solar Media Events
March 23, 2022
Austin, Texas, USA
Solar Media Events
March 29, 2022
Lisbon, Portugal

PV TECH POWER VOLUME 29 OUT NOW—Get 35% off your first year

Solar’s 2030 blueprint