In+, Pb2+ and Bi3+ in KBr crystal: Luminescence dynamics

The paper presents absorption, emission and decay kinetics of the series of crystals KBr:In + , KBr:Pb 2+ and KBr:Bi 3+ . All these ions have similar electronic structure of the lowest excited state which is shaped mainly by dynamic Jahn-Teller effect. While the slow decay curve of KBr:Pb2 + has known non-exponential shape the decays of KBr:In + and KBr:Bi 3+ main emissions are single exponential. The decay of KBr:In + emission at 422 nm consist only one component with lifetime equal 16.2 μs at 8 K. The decay of KBr:Bi 3+ emission at 392 nm has evidently two component, fast and slow ones, and lifetime corresponding to slow one is 2.1 ms.