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As for the lasing of organic semiconductor materials, novel semi-conducting materials N,N′-bis(3-methylphenyl)-N,N′-diphenyl-[1,1′:4′,1″-terphenyl]-4,4″-diamine (BMT-TPD) and N,N′-bis(3-methylphenyl)-N,N′-diphenyl-[1,1′:4′,1″:4″,1′″-quaterphenyl]-4,4′″-diamine (BMQ-TPD) were synthesized. In contrast to the N,N′-diphenyl-N,N′-bis(3-methylphenyl)-(1,1′-biphenyl)-4,4′-diamine (TPD), the well known organic...
Metallic films were widely used in many micro-cavities or as electrodes. However, the quenching of fluorescent molecules and the large absorption loss of metallic films are generally considered fatal for the lasing. We report the enhancement of amplified spontaneous emission (ASE) of organic gain media in planar waveguide structure with metallic film. Compared to the metal-free device, the ASE threshold...
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