A molecular spin-crossover film allows for wavelength tuning of the resonance of a Fabry–Perot cavity

Yuteng Zhang; Karl Ridier; Victoria Shalabaeva; Isabelle Séguy; Sylvain Pelloquin; Henri Camon; Stéphane Calvez; Lucie Routaboul; Lionel Salmon; Gábor Molnár; Azzedine Bousseksou

doi:10.1039/D0TC02094J

A molecular spin-crossover film allows for wavelength tuning of the resonance of a Fabry–Perot cavity

Yuteng Zhang,^ab Karl Ridier,

^a Victoria Shalabaeva,^a Isabelle Séguy,^b Sylvain Pelloquin,^b Henri Camon,^b Stéphane Calvez,^b Lucie Routaboul,^a Lionel Salmon,

^a Gábor Molnár

*^a and Azzedine Bousseksou*^a

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* Corresponding authors

^a Laboratoire de Chimie de Coordination, CNRS UPR 8241, 205 Route de Narbonne, F-31077 Toulouse, France
E-mail: gabor.molnar@lcc-toulouse.fr, azzedine.bousseksou@lcc-toulouse.fr

^b Laboratoire d’Analyse et d’Architecture des Systèmes, CNRS UPR 8001, 7 Avenue du Colonel Roche, F-31400 Toulouse, France

Abstract

We harness the remarkable refractive index switching (0.04 < Δn(λ) < 0.2) between the low-spin and high-spin states of the molecular spin-crossover (SCO) complex [Fe(HB(1,2,4-triazol-1-yl)₃)₂] to realize a wavelength-tunable Ag/SCO/Ag multilayer Fabry–Perot cavity. This tuneability is coupled with low absorption losses (k ≤ 10⁻⁴) between 350 and 1000 nm providing scope for reconfigurable and self-adaptive photonics applications in the visible spectral region.

This article is part of the themed collection: Journal of Materials Chemistry C HOT Papers

Journal of Materials Chemistry C

A molecular spin-crossover film allows for wavelength tuning of the resonance of a Fabry–Perot cavity

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A molecular spin-crossover film allows for wavelength tuning of the resonance of a Fabry–Perot cavity

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