title: A codeposition route to CuI-pyridine coordination complexes for organic light-emitting diodes.
abstract: 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.
authors.affiliation: Department of Chemistry, University of Southern California, Los Angeles, California 90089, United States.
authors.forename: Zhiwei
authors.initials: Z
authors.lastname: Liu
authors.forename: Munzarin F
authors.initials: MF
authors.lastname: Qayyum
authors.forename: Chao
authors.initials: C
authors.lastname: Wu
authors.forename: Matthew T
authors.initials: MT
authors.lastname: Whited
authors.forename: Peter I
authors.initials: PI
authors.lastname: Djurovich
authors.forename: Keith O
authors.initials: KO
authors.lastname: Hodgson
authors.forename: Britt
authors.initials: B
authors.lastname: Hedman
authors.forename: Edward I
authors.initials: EI
authors.lastname: Solomon
authors.forename: Mark E
authors.initials: ME
authors.lastname: Thompson
mesh_terms: D003300:Copper / Q000737:chemistry*; D018360:Crystallography, X-Ray; D049449:Luminescence; D011725:Pyridines / Q000737:chemistry*; D013057:Spectrum Analysis / Q000379:methods; D014965:X-Rays
chemical_list: D011725:Pyridines; D003300:Copper; C023666:pyridine