论文信息 - Narrow-band emissions from conjugated-polymer films

Narrow-band emissions from conjugated-polymer films

Abstract Narrow optical emission bands (fwhm 5–10 nm) are observed on laser photoexcitation of solid films of certain fluorescent polymers composed of phenylene and vinylene or acetylene units. The phenomenon depends strongly on polymer backbone composition and incident light intensity. Possible explanations involving either stimulated emission or exciton condensation are discussed.

[1] E. Hanamura,et al. Emission Spectrum from the Bose-Condensed Excitonic Molecules , 1976 .

[2] R. Friend,et al. Photoexcitation in poly(arylenevinylenes) , 1987 .

[3] S. J. Jacobs,et al. Exciton-exciton annihilation in poly (p-phenylenevinylene) films , 1996 .

[4] D. Braun,et al. Photo- and electroluminescence efficiency in poly(dialkoxy-p-phenylenevinylene) , 1994 .

[5] R. H. Friend,et al. Lasing from conjugated-polymer microcavities , 1996, Nature.

[6] Garry Rumbles,et al. The efficiency and time-dependence of luminescence from poly (p-phenylene vinylene) and derivatives , 1993 .

[7] Charles E. Swenberg,et al. Electronic Processes in Organic Crystals , 1982 .

[8] Alan J. Heeger,et al. Laser emission from solutions and films containing semiconducting polymer and titanium dioxide nanocrystals , 1996 .

[9] D. Bradley. Plastic lasers shine brightly , 1996, Nature.

[10] G. Wegner,et al. Synthesis, optical absorption and fluorescence of new poly(p-phenylene)-related polymers , 1996 .

[11] Miller,et al. Spatially indirect excitons as primary photoexcitations in conjugated polymers. , 1994, Physical review letters.

[12] Gerwin H. Gelinck,et al. POLARON PAIR FORMATION, MIGRATION, AND DECAY ON PHOTOEXCITED POLY(PHENYLENEVINYLENE) CHAINS , 1996 .

[13] Victor V. Krasnikov,et al. Blue superradiance from neat semiconducting alternating copolymer films , 1996 .