Hybridized Local and Charge-Transfer Excited-State Emitter for a Blue Organic Solid-State Laser

초록

The use of triplet excitons harvestingand short exciton lifetimeorganic emitters is important to improve the exciton utilization inorganic semiconductor laser diodes. In this study, a hybridized localand charge-transfer (HLCT)-type molecule, 11-(3-(10-(4-(1-phenyl-1H-phenanthro[9,10-d]imidazol-2-yl)phenyl)anthracen-9-yl)phenyl)-11H-benzofuro[3,2-b]carbazole (PhAnMBf),is used as an emitter for blue-emitting organic solid-state lasers(OSSLs). The short exciton lifetime and high photoluminescence quantumyield of the PhAnMBf emitter allowed the fabrication of an organiclaser with an emission wavelength of 453 nm, a small full width athalf-maximum of 1.2 nm, and a threshold of 105 nJ/pulse, correspondingto 44 & mu;J/cm(2), on the distributed feedback substrate.The anthracene-based PhAnMBf material showed the potential of theHLCT emitter as an OSSL.

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