Improving the intrinsic thermal stability of the MAPbI(3) perovskite by incorporating cesium 5-aminovaleric acetate

Cesium 5-aminovaleric acetate (NH(2)C(4)H(8)COOCs) was used to improve the intrinsic thermal stability of the methylammonium lead triiodide (MAPbI(3)) perovskite. The corresponding carbon-based perovskite solar cells without encapsulation showed favourable stability at 100 °C for 500 h.