Phase stabilization via A-site ion anchoring for ultra-stable perovskite light emitting diodes.

A novel ion anchoring strategy stabilizes the perovskite phase, yielding ambient stable perovskite films and ultra-stable perovskite light-emitting diodes (PeLEDs) with an unprecedented operational half-lifetime over 37.2 years at 100 cd m-2 and exceeding 27% efficiency, marking a new stability benchmark for next-generation display and lighting applications.

7-Fluoro-6-nitro-quinazolin-4(3H)-one.

The quinazolinone unit of the title compound, C(8)H(4)FN(3)O(3), is essentially planar, with a maximum deviation of 0.0538 (14) Šfor the O atom. The nitro group is twisted by 12.0 (3)° from the mean plane of the quinazolinone ring system. The crystal structure is stabilized by inter-molecular N-H⋯O, C-H⋯N and C-H⋯O hydrogen bonds.