I am part of the planning team working on Bessy 3 - the next synchrotron in Berlin. We would really appreciate your feedback on what you -PV researcher or really any scientists who works with synchrotrons - would like to have. The deadline for submissions is end on June

Philippe Holzhey@philippeholzhey.bsky.social · 2mo ago

As part of the BESSY III conceptual design phase, HZB is seeking your vision for experiments that will be enabled by the next-generation source, targeting the expected start of operations from 2035 onwards. For this purpose, we will host a workshop on September 2nd/3rd at BESSY (Berlin-Adlershof).

As part of the BESSY III conceptual design phase, HZB is seeking your vision for experiments that will be enabled by the next-generation source, targeting the expected start of operations from 2035 onwards. For this purpose, we will host a workshop on September 2nd/3rd at BESSY (Berlin-Adlershof).

HZB-KFS BESSY III User Workshop

events.hifis.net

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/...

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.

science.org

Met someone cool today :)

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...

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-...

nature.com

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...

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

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 ...

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

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

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

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.

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...

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...

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 ...

irishexaminer.com

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.

Life of an addict 😅🙈

2D perovskite for catalysis! We studied the stability of 2D perovskites and understood why they are degrading. advanced.onlinelibrary.wiley.com/doi/full/10....

Photodegradation of 2D Ruddlesden‐Popper Perovskites: Consequences and Design Principles for Photoelectrochemical Applications

In this study, we examined the structural and morphological stability of the 2D perovskite-phenylethylammonium lead iodide PEA(+)2PbI4 thin films in aqueous electrolytes of phenylethylammonium iodide....

advanced.onlinelibrary.wiley.com

Worth a read: Climate change is still a risk! The shutdown of ocean currents could freeze Europe economist.com/leaders/2025... from The Economist

The shutdown of ocean currents could freeze Europe

When climate change poses a strategic threat, it needs a strategic response

economist.com

Was at pink lake today :)

Saw a pretty lake yesterday :)

Graduated on the weekend :) now I am also officially a doctor

5 years ago we started working on carbon electrodes for p-i-n devices. Little did we know how difficult it would turn out to be. But hey we did it 🤗 also found out that carbon electrodes are actually semiconducting pubs.acs.org/doi/full/10....

Charge Extraction Multilayers Enable Positive-Intrinsic-Negative Perovskite Solar Cells with Carbon Electrodes

Perovskite solar cells achieve high power conversion efficiencies but usually rely on vacuum-deposited metallic contacts, leading to high material costs for noble metals and stability issues for more reactive metals. Carbon-based materials offer a cost-effective and potentially more stable alternative. The vast majority of carbon-electrode PSCs use the negative-intrinsic-positive (n-i-p) or “hole-transport-layer-free” architectures. Here, we present a systematic study to assess the compatibility of “inverted”, p-i-n configuration PSC contact layers with carbon top electrodes. We identify incompatibilities between common electron transport layers and the carbon electrode deposition process and previously unobserved semiconducting properties in carbon electrodes with unique implications for charge extraction and electronic behavior. To overcome these issues, we introduce a double-layer atomic layer deposited tin oxide (SnO2) and Poly(2,3-dihydrothieno-1,4-dioxin)-poly(styrenesulfonate) (PEDOT:PSS), yielding up to 16.1% PCE and a retained 94% performance after 500 h of outdoor aging. The study is a crucial step forward for printable, metal-electrode-free, and evaporation-free perovskite PV technologies.

pubs.acs.org

Went running today in Oberfranken with family and friends :) nice to be out of Berlin once in a while

Sam Stranks and coworkers dropped another banger. Glad to see that understanding in the field of metal halide perovskites is still driven by some arxiv.org/pdf/2502.13609

After last night reading this piece actually gave me hope again

dan sinker@dansinker.com · last yr.

In light of everything happening, I wrote about how the KKK in the 1920s felt unstoppable, about the people that fought against them anyway, and about how fascism always fails. dansinker.com/posts/202…