Journal
CHEMICAL PHYSICS LETTERS
Volume 443, Issue 4-6, Pages 258-263Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cplett.2007.06.080
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The photoluminescence (PL) and electroluminescence (EL) properties of a samarium complex Sm(TTA)(3)phen (TTA = 2-thenoyltri-fluoroacetonate, phen = 1, 10-phenanthroline) were investigated. The results show that Sm(TTA)3phen could be used as promising luminescent and electron transporting material in the electroluminescent devices. The difference between PL and EL spectra was noticed and discussed. Besides, it is noteworthy that the choice of the hole transporting layer (HTL) showed significant effect on the device performance, which was explained by the low-lying highest occupied molecular orbit (HOMO) level of Sm(TTA)3phen and the different hole injection barrier at the HTL/EML (emitting material layer) interface. (C) 2007 Elsevier B.V. All rights reserved.
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