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An HZB team has published a report in the journal Science on the development of its current world record of 29.15% efficiency for a tandem solar cell made of perovskite and silicon. The tandem cell provided stable performance for 300 hours - even without encapsulation. To accomplish this, the group headed by Prof. Steve Albrecht investigated physical processes at the interfaces to improve the transport of the charge carriers.   Solar cells consisting of two semiconductors with differing band gaps can achieve considerably higher efficiencies when used in tandem compared to the individual cells on their own. This is because tandem cells use the solar spectrum more efficiently. In particular, conventional silicon solar cells primarily convert the infrared components of light efficiently into electrical energy, while certain perovskite compounds can effectively utilise the visible components of sunlight, making this a powerful combination. For further information see the IDTechEx rep

Amran al ashouriTechnische universitSteve albrechtPhysikalisch technische bundesanstaltVytautas getautisUniversity of potsdamKaunas university of technology lithuaniaUniversity of sheffield united kingdomUniversity of ljubljana sloveniaPerovskite photovoltaicsKaunas universityUnited kingdomஅம்ரன் அல் அஷோக்குறிஸ்டீவ் ஆல்பிரெக்ட்பல்கலைக்கழகம் ஆஃப் பாட்ஸ்‌ட்யாம்பல்கலைக்கழகம் ஆஃப் ஷெஃபீல்ட் ஒன்றுபட்டது கிஂக்டம்