A Codeposition Route to CuI-Pyridine Coordination Complexes for Organic Light-Emitting Diodes

作者：Liu Zhiwei; Qayyum Munzarin F; Wu Chao; Whited Matthew T; Djurovich Peter I; Hodgson Keith O; Hedman Britt; Solomon Edward I; Thompson Mark E^*

来源：Journal of the American Chemical Society, 2011, 133(11): 3700-3703.

DOI：10.1021/ja1065653

We 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/m(2) 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.

• 出版日期2011-3-23