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Homogeneous and heterogeneous triplet — triplet annihilation in anthracene-doped phenanthrene crystals

✍ Scribed by S.H. Tedder; S.E. Webber

Publisher
Elsevier Science
Year
1975
Tongue
English
Weight
733 KB
Volume
31
Category
Article
ISSN
0009-2614

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✦ Synopsis

Delayed and prompt 5uorescekce spectra and delayed fluokscenctt decay data far ~0'5-106 M/M crystals of anfltracene in phenanthrene are report&d* It is shown that these data indicate that a heterogeneous (host-dopant) annihiiation process takes place which produces the excited singlet state of -tie cost molecule.

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## Abstract Triplet–triplet annihilation (TTA) is studied in a wide range of fluorescent host:guest emitter systems used in organic light‐emitting devices (OLEDs). Strong TTA is observed in host:guest systems in which the dopant has a limited charge‐trapping capability. On the other hand, systems i