Journal article
Highly efficient light emitters based on the spiro concept
Publication Details
Authors: | Spehr, T.; Pudzich, R.; Fuhrmann, T.; Salbeck, J. |
Publication year: | 2003 |
Journal: | Organic Electronics |
Pages range : | 61-69 |
Journal acronym: | Org. Electron. |
Volume number: | 4 |
ISSN: | 1566-1199 |
Abstract
We present a comparison of different molecular glasses based on the spiro-concept with respect to their photoemissionproperties. The absorption and emission spectra as well as the photoluminescence quantum yields in solutionare characterized. For thin amorphous films, prepared by vacuum vapor deposition, we examined amplified spontaneousemission (ASE) by optical pumping with picosecond pulses at 337 nm. Efficient ASE emission with thresholds ofdown to 1 lJ/cm2 was observed.
We present a comparison of different molecular glasses based on the spiro-concept with respect to their photoemissionproperties. The absorption and emission spectra as well as the photoluminescence quantum yields in solutionare characterized. For thin amorphous films, prepared by vacuum vapor deposition, we examined amplified spontaneousemission (ASE) by optical pumping with picosecond pulses at 337 nm. Efficient ASE emission with thresholds ofdown to 1 lJ/cm2 was observed.
