Manchester duo give perovskite cells double boost

Perovskite cells are generally less efficient than their traditional silicon counterparts, but the gap has been closing in recent years. In relative terms, perovskite cells are easier to manufacture and can be mass-produced via roll-to-roll processing, with the finished product more versatile than silicon cells and suitable for use on windows and contoured roofs.

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These factors have all contributed to strong commercial interest in perovskite cells in recent years. However, one major drawback is the technology’s reliance on lead, an environmental toxin with the potential to leak if the cells are damaged. Inspired by nature, Professor Brian Saunders and Dr David Lewis at Manchester University devised a way to eliminate the lead release from broken perovskite cells using a mineral called hydroxyapatite, which is a major constituent of human bone.

“Up until now, the substantial lead component in perovskite solar cells has been a potential environmental concern,” said Saunders, Professor of Polymer and Colloid Chemistry at Manchester’s School of Materials.