Perovskite crystals harvest sunlight almost as well as silicon, but cost pennies. Their trouble is an inborn fragility: from warmth and ordinary water in the air, they “get sick.” Inside, disorder builds up, and the shiny plate turns cloudy, losing its abilities within a couple of days.

Artificial intelligence becomes a diagnostic doctor. It performs spectroscopy — shining a light beam through the crystal and spotting micro-cracks before they appear. Then it sifts through thousands of additive recipes and finds a “medicine”—tiny particles that stitch up the lattice’s weak spots. In one experiment, the algorithm suggested embedding gold droplets, and the material lasted ten times longer.

A review of research showed: AI’s main talent is linking scattered observations into a sharp forecast. Already, such panel cells run trouble-free for thousands of hours, and in the future, algorithms will take over routine testing to speed up production.