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

doi:10.1002/adom.201901126

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

^*Corresponding author for this work

Graduate School of Advanced Science and Engineering

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

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.

Original language	English
Article number	1901126
Journal	Advanced Optical Materials
Volume	8
Issue number	1
DOIs	https://doi.org/10.1002/adom.201901126
Publication status	Published - 2020 Jan 1

Keywords

NIR-emitting light-emitting diodes
heteronuclear metal–alkynyl complexes
hybrid light-emitting diodes
red phosphors
white-emitting light-emitting diodes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics

Access to Document

10.1002/adom.201901126

Cite this

Fresta, E., Fernández-Cestau, J., Gil, B., Montaño, P., Berenguer, J. R., Moreno, M. T., Coto, P. B., Lalinde, E., & Costa, R. D. (2020). Versatile Homoleptic Naphthyl-Acetylide Heteronuclear [Pt₂M₄(CC-Np)₈] (M = Ag, Cu) Phosphors for Highly Efficient White and NIR Hybrid Light-Emitting Diodes. Advanced Optical Materials, 8(1), [1901126]. https://doi.org/10.1002/adom.201901126

Fresta, E, Fernández-Cestau, J, Gil, B, Montaño, P, Berenguer, JR, Moreno, MT, Coto, PB, Lalinde, E & Costa, RD 2020, 'Versatile Homoleptic Naphthyl-Acetylide Heteronuclear [Pt₂M₄(CC-Np)₈] (M = Ag, Cu) Phosphors for Highly Efficient White and NIR Hybrid Light-Emitting Diodes', Advanced Optical Materials, vol. 8, no. 1, 1901126. https://doi.org/10.1002/adom.201901126

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abstract = "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.",

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AU - Fernández-Cestau, Julio

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AU - Lalinde, Elena

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