As the three compounds showed high photoluminescence quantum yields, FPL of over 70%, in both toluene and PPT, and moderately high singlet-triplet energy gaps ranging from 0.28-0.33 eV, we considered their use as OLED emitters as well as laser dyes. The OLEDs with 4tCzPz and 4αCbPz showed blue-green and sky-blue emission with λEL of 492 nm [CIE coordinates of (0.17, 0.37)] and 475 nm [CIE coordinates of (0.15, 0.21)], respectively, with EQEmax reaching 24.6% and 21.2%, respectively. The stimulated emission properties of the three emitters were investigated in toluene, and we adopted these three emitters as organic gain materials in thin film waveguides. The doped films of 4tCzPz and 4αCbPz in mCBP showed ASE emission at 491 and 474 nm and an ASE threshold of 41.0 and 44.9 µJ/cm 2 , respectively.