HZB units new effectivity file for CIGS perovskite tandem photo voltaic cells
by Robert Schreiber
Berlin, Germany (SPX) Feb 05, 2025
Researchers at Helmholtz Middle Berlin for Supplies and Power (HZB) and Humboldt College Berlin have developed a CIGS-perovskite tandem photo voltaic cell that has set a brand new world file for effectivity, reaching 24.6%. The efficiency of the cell has been formally licensed by the Fraunhofer Institute for Photo voltaic Power Techniques.
Skinny-film photo voltaic cells, akin to these based mostly on copper, indium, gallium, and selenium (CIGS), require minimal materials and power to fabricate, making them an environmentally pleasant various to standard silicon-based photo voltaic cells. CIGS skinny movies may also be utilized to versatile substrates, increasing their potential purposes.
The brand new tandem photo voltaic cell developed by HZB and Humboldt College combines a CIGS backside cell with a perovskite high cell. By optimizing the contact layers between these two elements, the analysis workforce efficiently elevated effectivity to a record-breaking 24.6%. This milestone was confirmed by the Fraunhofer Institute for Photo voltaic Power Techniques ISE in Freiburg, Germany.
This achievement was made doable by means of a collaborative effort amongst researchers. The highest cell was developed by Thede Mehlhop, a grasp’s pupil at TU Berlin, beneath the supervision of Stefan Gall. The perovskite absorber layer was created within the joint laboratory of HZB and Humboldt College Berlin, whereas the CIGS sub-cell and speak to layers had been fabricated by HZB researcher Guillermo Farias Basulto. Moreover, the KOALA high-performance cluster system at HZB was used to deposit the perovskite and speak to layers in a vacuum.
“At HZB, we now have extremely specialised laboratories and consultants who’re high performers of their fields. With this world file tandem cell, they’ve as soon as once more proven how fruitfully they work collectively,” mentioned Prof. Rutger Schlatmann, spokesman for the Photo voltaic Power Division at HZB.
HZB has a powerful monitor file in reaching world information in photo voltaic cell effectivity, together with previous accomplishments in silicon-perovskite tandem cells and now in CIGS-perovskite tandem know-how.
“We’re assured that CIGS-perovskite tandem cells can obtain a lot larger efficiencies, in all probability greater than 30%,” mentioned Prof. Rutger Schlatmann.
Associated Hyperlinks
Helmholtz Center Berlin for Materials and Energy
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