Article, page-5

The interviewee is a well known PSC practitioner in Europe. The lead issue is not as serious if you consider the whole module in which the lead is less than the allowed limits. I remember how First Solar got over the CD issue in their CdTe thin film cells. In this case, the solubility of the degraded product, the lead iodide, is another issue.

The interviewer missed asking about the inherent instability of PSC in UV, temperature and air (oxygen) that together mean that probably, none of the `hero` compositions with halides and organics will get to the market. The comment made about microwires is quite exciting as the cost of ITO is very high and graphene conductivity is just not good enough.

All readers may note that he talks about lots of research to be done. The general concensus in EU is that manufacture is 5 years away. Maybe the big players doing private development in Asia would be a bit more optimistic and say 3 years. Not sooner.