Near-infrared electroluminescent lanthanide [Pr(III), Nd(III), Ho(III), Er(III), Tm(III), and Yb(III)] N,O-chelated complexes for organic light-emitting devices

被引：82

作者：

Katkova, Marina A. ^{[1
]}

Pushkarev, Anatoly P. ^{[1
]}

Balashova, Tatyana V. ^{[1
]}

Konev, Alexey N. ^{[1
]}

Fukin, Georgy K. ^{[1
]}

Ketkov, Sergey Yu. ^{[1
]}

Bochkarev, Mikhail N. ^{[1
]}

机构：

[1] GA Razuvaev Inst Organometall Chem RAS, Nizhnii Novgorod 603950, Russia

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2011年 / 21卷 / 41期

关键词：

METAL-COMPLEXES; DIODES; LIGANDS; ERQ;

D O I：

10.1039/c1jm13023d

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

New near-IR electroluminescent complexes of Pr3+, Nd3+, Ho3+, Er3+, Tm3+, Yb3+ with N, O-chelated ligands, Ln(2)(OON)(6) (OON = 2-(2-benzoxyazol-2-yl) phenolate) and Ln(2)(SON)(6) (SON 2-(2-benzothiazol-2-yl) phenolate), were synthesized by the reaction of Ln[N(SiMe3)(2)](3) and the corresponding N, O-chelating ligand. X-Ray analysis for the Pr and Nd compounds reveals centrosymmetric dimeric structures of the complexes. The solid-state electronic absorption spectra and the electroluminescent spectra show long-wavelength 4f-4f transitions which provide potential use of the compounds as NIR emitting materials in organic light-emitting devices (OLEDs). When constructing OLEDs based on Ln(2)(OON)(6) and Ln(2)(SON)(6), the best results were achieved with the Nd3+ and Yb3+ complexes, where the NIR wall plug efficiency of the ITO/TPD/Ln-complex/BATH/Yb system is 0.82 and 1.22 mW W-1, respectively.

引用

页码：16611 / 16620

页数：10

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