论文标题
在强大的非接触式旋转/石墨烯混合设备中，热感和光诱导自旋跃迁的电气感测
Electrical sensing of the thermal and light induced spin transition in robust contactless spin-crossover/graphene hybrid devices
论文作者
论文摘要
基于自旋交叉（SCO）/2D异质结构的混合设备授予一个高度敏感的平台，以检测分子SCO组件中的自旋跃迁并调整2D材料的性能。但是，在热处理，光照射或与表面接触以及用于处理的方法中，SCO材料的脆弱性限制了其适用性。在这里，我们报告了一种易于加工且可靠的SCO/2D混合设备，其基于CVD-涂印烯的可升华的SCO [Fe（Pyrz）2]分子具有出色的性能，该分子与电子行业协议完全兼容。因此，开发了一种基于基于[Fe（pyrz）2]（四方相）的难以捉摸的多晶型物的新方法，这使我们能够电气检测到设备中快速有效的光诱导的自旋转变（在5分钟内〜50％的产率）。当在非接触式配置中插入两个活性组件之间的柔性聚合PMMA的柔性聚合物层，在5分钟内达到〜100％的产率时，就可以增强这种性能。
Hybrid devices based on spin-crossover (SCO)/2D heterostructures grant a highly sensitive platform to detect the spin transition in the molecular SCO component and tune the properties of the 2D material. However, the fragility of the SCO materials upon thermal treatment, light irradiation or contact with surfaces and the methodologies used for their processing have limited their applicability. Here, we report an easily processable and robust SCO/2D hybrid device with outstanding performance based on the sublimable SCO [Fe(Pyrz)2] molecule deposited over CVD-graphene, which is fully compatible with electronics industry protocols. Thus, a novel methodology based on growing an elusive polymorph of [Fe(Pyrz)2] (tetragonal phase) over graphene is developed that allows us to electrically detect a fast and effective light-induced spin transition in the devices (~50% yield in 5 minutes). Such performance can be enhanced even more when a flexible polymeric layer of PMMA is inserted in between the two active components in a contactless configuration, reaching a ~100 % yield in 5 minutes.
