Author/Authors :
Friend، نويسنده , , R.H. and Denton، نويسنده , , G.J. and Halls، نويسنده , , J.J.M. and Harrison، نويسنده , , N.T. and Holmes، نويسنده , , A.B. and Kِhler، نويسنده , , A. and Lux، نويسنده , , A. and Moratti، نويسنده , , S.C. and Pichler، نويسنده , , K. and Tessler، نويسنده , , N. and Towns، نويسنده , , K.، نويسنده ,
Abstract :
We report progress in the processing and application of poly(phenylene vinylene), PPV, as the emissive layer in electroluminescent diodes, LEDs. Photoluminescence efficiencies above 60% for solid films of PPV are now achieved, and single-layer EL diodes achieve luminous efficiencies above 2 Lumens/W and peak brightnesses up to 90,000 cd/m2. We demonstrate that PPV of this type can show stimulated emission in sub-picosecond pump-probe experiments, and can be used as the active lasing medium when incorporated in suitable microcavity structures.
Keywords :
electroluminescence , Laser , Poly(phenylene vinylene) , Photoluminescence
