>Perovskite PV involve organic molecules - you can't make them nor to they work without these organic chemicals.

I was under the impression that perovskites were fully inorganic? That they may or may not use organic precursors in synthesis is irrelevant.

The interesting question[0] is what is the specific nature and mechanism of the failure reactions in perovskites, so that they may be mitigated or eliminated by alterations to the chemical structure of new perovskites. There is nothing trivially intrinsic about the class of materials that precludes stability.

A good comparative example where a similar problem has been reasonably overcome is with oleds, especially those of higher wavelength (higher energy photons to kick off negative reactions). Yes they might not last as long as an inorganic LED but offer other compelling advantages.

[0]That the researchers appear to be at least attempting to answer