Journal
ORGANIC ELECTRONICS
Volume 4, Issue 2-3, Pages 61-69Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.orgel.2003.08.002
Keywords
organic laser; stimulated emission; amplified spontaneous emission; spiro compounds; oligophenyl; carbazole
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We present a comparison of different molecular glasses based on the spiro-concept with respect to their photo-emission properties. The absorption and emission spectra as well as the photoluminescence quantum yields in solution are characterized. For thin, amorphous films, prepared by vacuum vapor deposition, we examined amplified spontaneous emission (ASE) by optical pumping with picosecond pulses at 337 nm. Efficient ASE emission with thresholds of down to 1 muJ/cm(2) was observed. (C) 2003 Elsevier B.V. All rights reserved.
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