Journal
ADVANCED OPTICAL MATERIALS
Volume 7, Issue 23, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adom.201900830
Keywords
copper (I) complexes; deep-red emitters; light-emitting electrochemical cells; thin film lighting; white-emitting devices
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Funding
- program Ayudas para la atraccion de talento investigador -Modalidad 1 of the Consejeria de Educacion, Juventud y Deporte - Comunidad de Madrid [2016-T1/IND-1463]
- Spanish MINECO [RYC-2016-20891]
- Europa Excelencia program [ERC2019-092825]
- FOTOART-CM project - Madrid region [P2018/NMT-4367]
- 'Fonds der Chemischen Industrie' (FCI) in the Liebig
- Cluster of Excellence 'Engineering of Advanced Materials' (EAM)
- Marie Sklodowska-Curie Individual Fellowships (H2020-MSCA-IF-2017)
- BBVA Foundation
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The synthesis and characterization, as well as photoluminescent and electrochemical features of a series of ionic copper(I) complexes-, i.e., [Cu((NN)-N-<^>)((PP)-P-<^>)](+), where (NN)-N-<^> is 4,4 '-diethylester-2,2 '-biquinoline (dcbq) and (PP)-P-<^> is bis-triphenylphosphine, bis[2-(diphenylphosphino)phenyl)ether] (POP), or 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (Xantphos)-are reported along with their application to achieve both deep-red and white light-emitting electrochemical cells (LECs). In short, the first deep-red Cu(I)-based LECs featuring high irradiances (approximate to 100 mu W cm(-2)) and excellent color stability (x/y CIE color coordinates of 0.66/0.32) over days are reported. This is achieved by comparing the electroluminescent behavior of this series of complexes with respect to the irradiance and stability, as well as the impact of introducing supporting electrolytes on the device performance. This is rationalized using spectroscopic and electrochemical studies. Finally, the first white-emitting LEC is manufactured with red-emitting copper(I) complexes, achieving x/y CIE color coordinates of 0.31/0.32 and a high color rendering index of 92.
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