Laser action in polydialkylfluorene films:: Influence of low-temperature thermal treatment

被引：44

作者：

Shkunov, MN ^{[1
]}

Österbacka, R

Fujii, A

Yoshino, K

Vardeny, ZV

机构：

[1] Univ Utah, Dept Phys, Salt Lake City, UT 84112 USA

[2] Abo Akad Univ, Dept Phys, FIN-20500 Turku, Finland

[3] Osaka Univ, Dept Elect Engn, Suita, Osaka 5650871, Japan

[4] Grad Sch Mat Res, Turku, Finland

来源：

APPLIED PHYSICS LETTERS | 1999年 / 74卷 / 12期

关键词：

D O I：

10.1063/1.123642

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have used a variety of optical probes to investigate the changes occurring upon low-temperature thermal treatment to the emissive properties of dialkyl substituted polyfluorene thin films. We found that the low-temperature-driven morphological changes involving aggregates formation, which are observed in the absorption and photoluminescence spectra at low excitation intensities, give rise at high excitation intensities to laser action in the blue spectral range. In some cases, switching between two stimulated emission bands was also observed. (C) 1999 American Institute of Physics. [S0003-6951(99)02412-2].

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页码：1648 / 1650

页数：3

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