White Light-Emitting Electrochemical Cells Based on Deep-Red Cu(I) Complexes

Elisa Fresta, Michael D. Weber, Julio Fernandez-Cestau, Rubén D. Costa

研究成果: Article査読

13 被引用数 (Scopus)

抄録

The synthesis and characterization, as well as photoluminescent and electrochemical features of a series of ionic copper(I) complexes—, i.e., [Cu(N^N)(P^P)]+, where N^N is 4,4′-diethylester-2,2′-biquinoline (dcbq) and P^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 (≈100 µW 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.

本文言語English
論文番号1900830
ジャーナルAdvanced Optical Materials
7
23
DOI
出版ステータスPublished - 2019 12 1
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 原子分子物理学および光学

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