A Codeposition Route to CuI−Pyridine Coordination Complexes for Organic Light-Emitting Diodes
2011; American Chemical Society; Volume: 133; Issue: 11 Linguagem: Inglês
10.1021/ja1065653
ISSN1943-2984
AutoresZhiwei Liu, Munzarin F. Qayyum, Chao Wu, Matthew T. Whited, Peter I. Djurovich, Keith O. Hodgson, Britt Hedman, Edward I. Solomon, Mark E. Thompson,
Tópico(s)Magnetism in coordination complexes
ResumoWe demonstrate a new approach for utilizing CuI coordination complexes as emissive layers in organic light-emitting diodes that involves in situ codeposition of CuI and 3,5-bis(carbazol-9-yl)pyridine (mCPy). With a simple three-layer device structure, pure green electroluminescence at 530 nm from a Cu(I) complex was observed. A maximum luminance and external quantum efficiency (EQE) of 9700 cd/m2 and 4.4%, respectively, were achieved. The luminescent species was identified as [CuI(mCPy)2]2 on the basis of photophysical studies of model complexes and X-ray absorption spectroscopy.
Referência(s)