What time is it?

I did sign up for it but haven’t gotten the link yet. Will the link be send out later?

Meridionally consistent decline in the observed western boundary contribution to the Atlantic Meridional Overturning Circulation Western boundary observations in the Atlantic suggest a meridionally consistent decline in the ocean overturning circulation.

New study finds the "canary in the coal mine" for the #AMOC: a consistent decline of the western overturning circulation, down from 20 to 15 Sv during 2004-2023 at 26° N. 🌊
AMOC "could be at or near a critical tipping point, potentially leading to its collapse".
www.science.org/doi/10.1126/...

Met someone cool today :)

Crystal-facet-directed all-vacuum-deposited perovskite solar cells - Nature Materials The vacuum process is scalable and solvent free, yet all-vacuum-deposited perovskite solar cells still trail solution-processed counterparts. Facet-directed co-evaporation yields (100)-oriented mixed-...

We published a new study about some more stable perovskite/silicon tandems in Nature Materials. Xinyi started using PbCl2 for co-evaporated films that allowed him to get orientated films. www.nature.com/articles/s41...

Directly 2 drinks ;)?

Mensch hockt auf einem begrünten Dach zwischen Solarmodulen.

Marburger Studie zeigt: #Photovoltaik wächst gobal in den #Terawatt-Maßstab. Damit #Solarenergie nachhaltig bleibt, müssen #Materialwahl und #Recycling schon heute mitgedacht werden. Review von Dr. Lukas Wagner et al in Nature Reviews Clean Technology. Foto: Jan Hosan uni-marburg.de/gWDi8s

Kun Sun at Al in Nature Communications (@NatureComms): #Insights into the #operational #stability of #wide-bandgap #perovskite and #tandem #solar cells under rapid thermal #cycling;

Nat. Commun. 17, 596 (2026)

doi.org/10.1038/s414...

Actions for sustainably scalable multi-terawatt photovoltaics - Nature Reviews Clean Technology The large-scale deployment of photovoltaics could create new raw material demands and has the potential to create large end-of-life waste management issues in the future. This Review explores methods ...

We, including @lukaswagner.bsky.social, @rpietzcker.bsky.social, @mldavies04.bsky.social, looked into the necessary steps to keep solar energy growing on the long term by actively addressing the different dimensions of sustainability www.nature.com/articles/s44... in @natrevcleantech.nature.com

Best news I have been reading this week :) www.science.org/content/arti...

Die Polizei, die Feuerwehr, die Ärzteschaft, die Umwelthilfe und die überwältigende Mehrheit (75%) der Berliner Bevölkerung fordert ein Verbot von privatem Feuerwerk an Silvester. Das kann man nicht länger ignorieren. Verletzungen, Schäden hohe Kosten.
Was macht die Politik?

Come do a PhD with us! 🧪☀️
This position is part of a collaborative project to understand and improve the stability of perovskite-silicon tandem solar cells. You'd be based at @uni-freiburg.de working in close collaboration with @fraunhoferise.bsky.social.
Deadline 30.11.2025

U.S. Congress considers sweeping ban on Chinese collaborations Researchers speak out against proposal that would bar funding for U.S. scientists working with Chinese partners or training Chinese students

Link to the article www.science.org/content/arti...

There is a worrisome new law on the way for researchers in the US. See the screenshot from the science article. It would have devastating consequences for perovskite solar cells researchers in the US. I am feeling really sorry for my colleagues

Congrats Lukas :) very well deserved!

Dr. T-Rex presented yesterday their latest perovskite solar cell research. They are struggling a bit with reaching the chemicals in the glovebox but otherwise things are going smoothly

“The solar coating can be applied with any paint color and does not use silicon or rare earth materials.” Does not sound like perovskites (“any paint color”) or III-V (“rare earth”) for me - maybe a dye-based but then the 20% efficiency doesnt make sense. So not sure 😅

Congratulations to Flo 🥳 he just successfully defended his PhD with summa cum laude 🎉 in the back a happy supervisor

We had a great beamtime at I15-1 at Diamond. Got to shine some light on lead halide perovskites.

How cool!

A green solvent enables precursor phase engineering of stable formamidinium lead triiodide perovskite solar cells - Nature Communications The use of harmful solvents to fabricate stable devices hampers the commercialization of perovskite solar cells. Here, the authors introduce a biorenewable solvent system and precursor-phase engineering to realize stable formamidinium lead triiodide-based solar cells.

Those perovskites are considerably more stable than any other perovskite.

www.nature.com/articles/s41...

Butylamine takes a H+ from methylammonium and forms a mixed 2D perovskite of BAMAPbI3 (the n is mixed). The 2D perovskite is then converted into a 3D perovskite with a conversion of FAI in butanol. One ends up with a phase pure FAPbI3 film.

Heard a lot of people talk about the stability of the perovskite layer at the nature conference. A first good step is leaving behind coordinating solvents like DMSO and instead use amines which end up as part of the final perovskite! Using butylamine as coordinating solvent together with MeTHF

On the way now to the Nature Conference for Perovskite Solar Cells :) hope to see some of you there!

Love this snippet from the recent 80000 podcast. 80000hours.org/podcast/epis...

One of the largest Irish animals is at imminent risk of further decline — new report The flapper skate is critically endangered and are top predators and their absence, like taking wolves from a forest, can lead to impacts cascading through the ecosystem. It is hard to imagine that a ...

New research from Queens University shows the critically endangered flapper skate continues its slide to extinction. The lead author, Patrick Collins, told me that it's not too late but decisive action is needed.

www.irishexaminer.com/lifestyle/ou...

Kann mir nicht vorstellen das es nur einen Grund dafuer gibt. Sind vermutlich schon mehrere Einflussfaktoren.

I have never heard an English speaker pronounce my first and last name right. But same goes for Germans at times - peak was when I got a swimming cap for Christmas from my coach which was spelled PhiLLippe.

Yeah agree 😔 I hope it comes back with time!

Somehow a bit sad here for perovskites. On twitter I had the feeling there was still somewhat of a perovskite solar cells community. But I havent really seen many interesting posts here about it.