27 August 2009 Triplet excitation scavenging as method to control the triplet concentration
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Abstract
In this manuscript, non-classical nonvertical triplet acceptors are proposed as a promising class of efficient triplet scavengers for future solid-state electrically pumped organic lasers. Triplet excitation scavenging is investigated in polymer films of polyfluorene, a prospective material for the fabrication of thin-film organic lasers. Two dopant molecules, cyclooctatetraene (COT, a nonvertical triplet acceptor) and anthracene (a vertical triplet acceptor), are studied and the occurrence of anomalous nonvertical triplet energy transfer in solid conjugated polymer films is demonstrated for the first time employing COT.
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Sarah Schols, Sarah Schols, Andrey Kadashchuk, Andrey Kadashchuk, Paul Heremans, Paul Heremans, Anke Helfer, Anke Helfer, Ullrich Scherf, Ullrich Scherf, } "Triplet excitation scavenging as method to control the triplet concentration", Proc. SPIE 7415, Organic Light Emitting Materials and Devices XIII, 74150A (27 August 2009); doi: 10.1117/12.826176; https://doi.org/10.1117/12.826176
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