Hello Photovoltaic world! We are a Young investigators group at @hzbde researching perovskite/silicon solar cells. pic: throwback to #psco2018

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29.15 reasons to party: #TandemOnTour now entering the @NREL chart 🍾 (and there are of course other new values, too!) We can see the 30% already 😎 PS.: The TU Berlin affiliation will be updated to HZB nrel.gov/pv/cell-effici… @HZBde