Spiro-substitution effect of terfluorenes on amplified spontaneous emission and lasing behaviors
| Autor: | Changjin Ou, Zongyan Zuo, Yongjie Ding, He Zhang, Ruidong Xia, Wei Huang, Linghai Xie, Sixian Sun |
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| Rok vydání: | 2018 |
| Předmět: |
Distributed feedback laser
Amplified spontaneous emission Materials science Photoluminescence 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Photochemistry Laser 01 natural sciences 0104 chemical sciences law.invention law Materials Chemistry Substitution effect Stimulated emission 0210 nano-technology Absorption (electromagnetic radiation) Lasing threshold |
| Zdroj: | Journal of Materials Chemistry C. 6:4501-4507 |
| ISSN: | 2050-7534 2050-7526 |
| DOI: | 10.1039/c8tc00714d |
| Popis: | In order to investigate the inherent differences between spirofluorenes, two typical spirocycle models, spiro[fluorene-9,9′-xanthene] (SFX) and spirobiflourene (SBF), were chosen to construct four spiro-terfluorenes (DSFX-OSFX, DSBF-OSFX, DOSFX-SFX and DOSFX-SBF) to investigate the effect of spirocycle substitution on photophysical and stimulated emission properties. The terfluorenes have similar absorption and photoluminescence properties. While the DOSFX-SBF film displays the best ASE properties with a threshold of 1.81 μJ cm−2, the lasing threshold of the 1-D DFB laser based on DOSFX-SBF is lowered to 0.85 μJ cm−2. These results indicate that the type of spirofluorene has a dramatic influence on stimulated emission properties and spiro terfluorenes have potential applications in organic lasers. |
| Databáze: | OpenAIRE |
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