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首页> 外文期刊>Advanced Materials >Electrical Sensing of the Thermal and Light-Induced Spin Transition in Robust Contactless Spin-Crossover/Graphene Hybrid Devices
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Electrical Sensing of the Thermal and Light-Induced Spin Transition in Robust Contactless Spin-Crossover/Graphene Hybrid Devices

机译：Electrical Sensing of the Thermal and Light-Induced Spin Transition in Robust Contactless Spin-Crossover/Graphene Hybrid Devices

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摘要

Hybrid devices based on spin-crossover (SCO)/2D heterostructures granta highly sensitive platform to detect the spin transition in the molecularSCO component and tune the properties of the 2D material. However, thefragility of the SCO materials upon thermal treatment, light irradiation,or contact with surfaces and the methodologies used for their processinghave limited their applicability. Here, an easily processable and robustSCO/2D hybrid device with outstanding performance based on the sublimableSCO Fe(Pyrz)_2 molecule deposited over chemical vapor deposition(CVD) graphene is reported, which is fully compatible with electronicsindustry protocols. Thus, a novel methodology based on growing an elusivepolymorph of Fe(Pyrz)_2 (tetragonal phase) over graphene is developedthat allows a fast and effective light-induced spin transition in the devices(≈50 yield in 5 min) to be detected electrically. Such performance can beenhanced even more when a flexible polymeric layer of poly(methyl methacrylate)is inserted in between the two active components in a contactlessconfiguration, reaching a ≈100 yield in 5 min.

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