Eliminating nonradiative decay in Cu(I) emitters: >99% quantum efficiency and microsecond lifetime Article Swipe

PDF

Related Concepts

Microsecond Photoexcitation Copper Luminescence Excited state Ligand (biochemistry) Amide Carbene Photochemistry Chemistry Photoluminescence Metal Quantum efficiency OLED Materials science Optoelectronics Atomic physics Physics Optics Layer (electronics) Organic chemistry Receptor Catalysis Biochemistry

Rasha Hamze , Jesse L. Peltier , Daniel Sylvinson , Moon Chul Jung , José Rodolfo Martínez y Cárdenas , Ralf Haiges , Michèle Soleilhavoup , Rodolphe Jazzar , Peter I. Djurovich , Guy Bertrand , Mark E. Thompson ·

YOU? · · 2019 · Open Access · · DOI: https://doi.org/10.1126/science.aav2865 · OA: W2911951534

Helping copper glow Copper's abundance makes the metal an appealing candidate for luminescence applications. However, many copper complexes tend to decay nonradiatively after photoexcitation. A recently described exception involves a two-coordinate complex that sandwiches the metal between an amide ligand and a carbene ligand. Hamze et al. thoroughly explored this motif and measured a nearly perfect luminescence efficiency. They used this property to produce a prototype blue organic light-emitting diode. The photodynamics appeared largely ligand-centered, with the excited state attributed to copper-facilitated charge transfer from amide to carbene. Science , this issue p. 601