Tetraphosphine-supported PtAu3 cluster complexes display intense phosphorescence with quantum yields of over 90% in doped films. High-efficiency solution-processable OLEDs are successfully achieved with extremely small EQE roll-off at a practical brightness over 1000 cd m−2.
Tetradecanuclear Ag12Cu2 acetylide cluster complexes show a dramatic phosphorescent change from yellow to orange with a drastic emission spectral red-shift upon mechanical grinding due to increased intermetallic contact within Ag12Cu2 clusters.