Perovskites are a particular physical structure that atoms can form together. It looks like a box made of one element, with one atom of another element inside inside the box. Perovskites are named after the naturally-occurring mineral that exhibits this structure.
Mother Nature's Perovskite is made of Calcium and Titanium. Synthetic, flourescent perovskites are made of Lead and Cadmium. You can see the problem here.
And yes, Lead is a massive problem even if the article downplays it somewhat. You can't put lead things outside, because rain will cause lead to leech into water supplies. That's bad.
Perovskites are a particular physical structure that atoms can form together. It looks like a box made of one element, with one atom of another element inside inside the box. Perovskites are named after the naturally-occurring mineral that exhibits this structure.
Mother Nature's Perovskite is made of Calcium and Titanium. Synthetic, flourescent perovskites are made of Lead and Cadmium. You can see the problem here.
And yes, Lead is a massive problem even if the article downplays it somewhat. You can't put lead things outside, because rain will cause lead to leech into water supplies. That's bad.