Low-threshold amplified spontaneous emission in blends of conjugated polymers
- 14 December 1998
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 73 (24) , 3492-3494
- https://doi.org/10.1063/1.122814
Abstract
Low thresholds (∼500 W/cm2) for amplified spontaneous emission(ASE) are reported in films of soluble poly(paraphenylene vinylene)-based conjugated polymer blends. Efficient Förster energy transfer from the absorbing host polymer to the emitting guest polymer is observed. Emission in the blends originates predominantly from the guest polymer. The large spectral shift between the absorption and emission wavelengths lowers the self-absorption losses and results in low ASE thresholds. Initial results show an enhancement in photoluminescencequantum efficiency of the blends.Keywords
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