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- Title
Europium coordination compounds based on carbacylamidophosphate ligands for metal-organic light-emitting diodes (MOLEDs).
- Authors
Litsis, O. O.; Ovchynnikov, V. A.; Sliva, T. Yu.; Amirkhanov, V. M.; Sorokin, V. M.; Minyailo, M. A.; Kolomzarov, Yu. V.; Tytarenko, P. A.; Minakova, I. E.
- Abstract
In this work, the photo- and electroluminescence properties of new red phosphores based on europium complexes with carbacylamidophosphate (CAPh) ligands and additional aromatic ligands 1,10-phenantroline and 4,4'-bipyridine have been studied. Compounds Eu(L¹)3(phen) (1), Eu(L²)3(phen) (2), Eu2(L¹)6(i-prOH)2(4,4'-bipy) (3) and Eu2(L )6(H2O)2(4,4'-bipy) (4), where HL¹ - 2,2,2-trichloro-N-(dipiperidin-1-yl-phosphoryl)acetamide, HL² - 2,2,2-trichloro-N-(dimorpholin-1-yl-phosphoryl)acetamide, were synthesized. Technology of europium complexes coating from solutions with different concentrations in different solvents has been developed. Experimental samples of light-emitting planar heterostructures were fabricated using the device architecture comprising an anode (ITO), a hole transport layer of 1,4-Bis(diphenylamino)benzene (BDB), a layer of complex and a cathode (Al or Mg). Another heterostructure configuration with a hole-transport layer of poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate) (PEDOT:PSS) has also been investigated. The different types of planar heterostructures were prepared, and their current-voltage characteristics have been discussed.
- Subjects
EUROPIUM; PHOSPHATES; ORGANIC light emitting diodes; ELECTROLUMINESCENCE; PHOTOLUMINESCENCE; METAL complexes; ELECTRIC potential; HETEROSTRUCTURES
- Publication
Semiconductor Physics, Quantum Electronics & Optoelectronics, 2013, Vol 16, Issue 2, p210
- ISSN
1560-8034
- Publication type
Article