Holzer, W. and Penzkofer, Alfons and Hoerhold, H.-H. and Raabe, D. and Helbig, M. (2000) Photo-physical and lasing characterization of an aromatic diamine-xylylene copolymer. OPTICAL MATERIALS, 15 (3). pp. 225-235. ISSN 0925-3467
Full text not available from this repository. (Request a copy)Abstract
A solution processable poly-condensation product of high glass transition temperature containing 50 mol% electrically active triphenylamine dimer (TPD) chromophores and 50 mol% non-conjugated alpha,alpha -diphenylxylylene (DPX) units in the main chain is studied for its photo-physical and lasing properties. This copolymer abbreviated as poly-TPD-DPX shows travelling-wave laser action (amplification of spontaneous emission) as neat film on a fused silica substrate and in liquid solution when transversally pumped with picosecond excitation pulses (wavelength 347.15 nm, duration 35 ps). Lasing occurs at 419 nm for the neat film and at 405 nm for the polymer in 1,4-dioxane solution. The optical constants (absorption spectrum and refractive index spectrum) of the neat film are determined by reflection and transmission measurement. The absorption cross-section spectra and fluorescence quantum distribution spectra of neat films and 1,4-dioxane solutions are compared. The fluorescence quantum yields of poly-TPD-DPX neat films and 1,4-dioxane solutions are 0.16 and 0.66, respectively. (C) 2000 Elsevier Science B.V. All rights reserved.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ORGANIC ELECTROLUMINESCENT DEVICES; OPTICAL-CONSTANTS MEASUREMENT; EFFECTIVE STIMULATED-EMISSION; CROSS-SECTION SPECTRA; LIGHT-EMITTING-DIODES; STATE LASER MATERIALS; HOLE TRANSPORT LAYER; POLYMER THIN-FILMS; CONJUGATED-POLYMER; MOLECULAR DESIGN; luminescent polymers; amplified spontaneous emission; travelling-wave lasing; optical constants; absorption behaviour; fluorescence behaviour; aromatic diamines; triphenylamine dimer TPD containing copolymer |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Alumni or Retired Professors > Group Alfons Penzkofer |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 15 Mar 2022 07:06 |
| Last Modified: | 15 Mar 2022 07:06 |
| URI: | https://pred.uni-regensburg.de/id/eprint/42026 |
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