ANU reaches 27.7% efficiency with silicon/perovskite tandem solar cell

Researchers at The Australian National University (ANU) have announced an impressive achievement - a silicon/perovskite tandem solar cell with a conversion efficiency of 27.7%.

Professor Kylie Catchpole says this would only need to improve slightly - to around 30% - before the technology could be rolled out around the world. "In comparison, typical solar panels being installed on rooftops at the moment have an efficiency around 20%" Professor Catchpole said.

International consortium announces 25% efficiency for perovskite CIGS solar cell

Scientists from Hasselt University, imec, VITO, EnergyVille and international partners within the PERCISTAND consortium have announced that they achieved an energy efficiency of 25% with a thin-film solar cell.

Bart Vermang, coordinator within the PERCISTAND consortium, describes the development of thin-film solar cells as ‘Pioneering’. The consortium, which partly consists of the collaborations within EnergyVille and Solliance, has succeeded in achieving a record energy efficiency with thin film solar cells. ‘We’ve achieved an energy efficiency of 25 percent for the first time, which is just as much energy as a traditional solar cell can generate on a day-to-day basis. And we haven’t yet reached the upper limit of our thin-film solar cells.’

New perovskite material may enable 38.7% efficient silicon\perovskite tandem cells

Scientists from Japan’s Gifu University and the Tokyo Institute of Technology have identified a chalcogenide perovskite material with light absorption attributes strong enough to offer the potential for a theoretical maximum conversion efficiency of 38.7% in a silicon perovskite tandem solar cell.

The material – BaZrTiS3 – has a light absorption coefficient exceeding 105cm-1, the highest of all solar cell materials including chalcogenide perovskites such as SrZrS3, BaHfS3 and SrHfS3, the scientists claim.

HZB team brings the efficiency of perovskite silicon tandem solar cells to 29.15%

The groups of Steve Albrecht and Bernd Stannowski at HZB have reached a record efficiency of 29.15% of its tandem solar cell made of perovskite and silicon.

HZB team sets new efficiency record for perovskite-silicon cells imageThe illustration shows the structure of the tandem solar cell: between the thin perovskite layer (black) and the silicon layer (blue) are functional intermediate layers. © Eike Köhnen/HZB

This value has been officially certified by the CalLab of the Fraunhofer Institute for Solar Energy Systems (ISE) and means that surpassing the 30% efficiency mark is now within reach.

Japanese manufacturer acquires rights to produce CIGS perovskite cell with 23.26% efficiency developed by HZB and Kaunas University

In September 2019, a research team led by Prof. Steve Albrecht from the HZB (in close collaboration with Kaunas University of Technology in Lithuania) announced a tandem solar cell with certified efficiency of 23.26% that combines the semiconducting materials perovskite and CIGS. Now, the team shares further details on these cells and states that an unnamed Japanese manufacturer has acquired the rights to produce them.

World record for tandem perovskite-CIGS solar cell image

The scientists said the self-assembling material used for the cell is made of molecules based on carbazole head groups with phosphonic acid anchoring groups, and consists of 1-2nm of self-assembled monolayers deposited on the surface of the perovskite by dipping it into a diluted solution.