期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 133, 期 11, 页码 3700-3703出版社
AMER CHEMICAL SOC
DOI: 10.1021/ja1065653
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资金
- U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-SC0001011]
- DOE Office of Biological and Environmental Research
- National Institutes of Health (NIH), National Center for Research Resources (NCRR) [P41RR001209, P41 RR001209]
- Direct For Mathematical & Physical Scien
- Division Of Chemistry [0948211] Funding Source: National Science Foundation
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.
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