Cs 2 AgBiBr 6 @TiO 2 nanocomposites with enhanced nonlinear absorption and electrochemical properties

Synthesis of well-defined Cs 2 AgBiBr 6 @TiO 2 nanocomposites. The material exhibits outstanding reverse saturable absorption ( β = 294 cm GW −1 ) and superior optical limiting ( F th = 3.87 J cm −2 ), proving its promise for photonic limiting devices.