Versatile Homoleptic Naphthyl-Acetylide Heteronuclear [Pt2M4(CC-Np)8] (M = Ag, Cu) Phosphors for Highly Efficient White and NIR Hybrid Light-Emitting Diodes

Elisa Fresta, Julio Fernández-Cestau, Belén Gil, Patricia Montaño, Jesús R. Berenguer, María Teresa Moreno, Pedro B. Coto, Elena Lalinde*, Rubén D. Costa

*この研究の対応する著者

研究成果: Article査読

5 被引用数 (Scopus)

抄録

A new family of low-energy emitting organic phosphors (OPs) based on [Pt2M4(CC-1-Np)8] clusters, in which M is either Ag(I) (1) or Cu(I) (2) and CC-1-Np is the strongly delocalized 1-naphthylacetylide ligand, are presented. The inclusion of the 1-naphthylacetylide moiety is crucial to achieve very emissive and stable OPs that do not experience photoinduced heat generation and oxidation in both white and NIR hybrid light-emitting diodes (HLEDs) operating under ambient conditions. In short, the first use of these novel OPs leads to i) HLEDs with NIR emission centered at 730 nm, color purity close to 0.99, and remarkable luminous efficacies of ≈1.5 lm W−1 that is comparable to commercial NIR-LEDs and ii) daylight white LEDs with luminous efficacies of 75 lm W−1 and stabilities of >500 h. Thus, this work provides relevant information for the synthesis, design, and application of a new family of low-energy emitting OPs toward efficient and stable white and NIR hybrid LEDs.

本文言語English
論文番号1901126
ジャーナルAdvanced Optical Materials
8
1
DOI
出版ステータスPublished - 2020 1月 1

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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