Donor–acceptor type blends composed of black phosphorus and C60 for solid-state optical limiters

Abstract

Novel donor–acceptor blends composed of black phosphorus (BP) as an electron donor and C₆₀ as an electron acceptor have been prepared and successfully embedded into a non-optically active poly(methylmethacrylate) (PMMA) matrix producing a BP:C₆₀/PMMA film. In contrast to C₆₀, BP and non-annealed BP:C₆₀ blends, annealed BP:C₆₀ blends show a significantly enhanced optical limiting response due to the thermal-induced intermolecular charge transfer effect between BP and C₆₀.