Ontology highlight
ABSTRACT:
SUBMITTER: Jen TH
PROVIDER: S-EPMC5460123 | biostudies-literature | 2017 Jun
REPOSITORIES: biostudies-literature
Scientific reports 20170606 1
The efficiency of electrofluorescent polymer light-emitting diodes is determined by singlet exciton fraction (χ<sub>S</sub>) formation and its value still remains controversial. In this work, χ<sub>S</sub> in spiropolyfluorene (SPF) is determined by analyzing transient emission of phosphor-dopant probe. The χ<sub>S</sub> is found to range from 50% to 76%, depending on applied voltage. Higher applied voltage gives larger χ<sub>S</sub>. Besides, more rapid increment in χ<sub>S</sub> with applied v ...[more]