Bis‐Tridentate Ir(III) Complexes with Nearly Unitary RGB Phosphorescence and Organic Light‐Emitting Diodes with External Quantum Efficiency Exceeding 31%

A new class of neutral bis-tridentate Ir(III) metal complexes that show nearly unitary red, green, and blue emissions in solution is prepared and employed for the fabrication of both monochrome and white-emitting organic light-emitting diodes, among which a green device gives external quantum efficiency exceeding 31%.