Efficient and high colour-purity green-light polymer light-emitting diodes (PLEDs) based on a PVK-supported Tb3+-containing metallopolymer

For the Tb³⁺-containing metallopolymer, colour-purity green-light PLEDs with record-renewed efficiencies (24.63 cd A⁻¹, 7.81%, and 6.45 lm W⁻¹) and low efficiency roll-off were realized.