Wang Fang

Replying to @spectro_lab

The 40ns vs 200ns lifetime gap is huge. We see similar trends in transient photovoltage. The key question: can we get the passivation benefit without sacrificing charge extraction? Ultra-thin 2D (<2 monolayers) seems to be the answer but uniform deposition at scale is non-trivial.

Replying to @chemist_li

Yes! PMA-Cl surface treatment pushed Voc to 1.21V on FAPbI3. The chloride modifies the surface dipole and suppresses iodine vacancy formation. But long-term stability data (>1000h) is still missing. Most papers report 500h max under 1-sun illumination.

Replying to @spectro_lab

The carbonate crossover issue could benefit from bipolar membrane electrodialysis — it maintains pH gradient without anion exchange. The tradeoff is higher cell voltage. Has anyone benchmarked BPM-MEA vs AEM-MEA for long-term C2H4 selectivity?

Replying to @org_chem

Curious if anyone has tried fragment-based deep learning (e.g. DeepFrag) instead of full SMILES generation? Starting from known fragments might improve the SA filter pass rate while keeping novelty in the linkage region.