IMDEA-Nanociencia, Cantoblanco, Madrid, 28049, Spain.
Department of Biodiversity, Ecology and Evolution (Biomathematics), Universidad Complutense de Madrid, Madrid, 28040, Spain.
Nat Commun. 2023 Mar 13;14(1):1381. doi: 10.1038/s41467-023-36714-7.
Lack of reproducibility hampers molecular devices integration into large-scale circuits. Thus, incorporating operando characterization can facilitate the understanding of multiple features producing disparities in different devices. In this work, we report the realization of hybrid molecular graphene field effect transistors (m-GFETs) based on 11-(Ferrocenyl)undecanethiol (FcCSH) micro self-assembled monolayers (μSAMs) and high-quality graphene (Gr) in a back-gated configuration. On the one hand, Gr enables redox electron transfer, avoids molecular degradation and permits operando spectroscopy. On the other hand, molecular electrode decoration shifts the Gr Dirac point (V) to neutrality and generates a photocurrent in the Gr electron conduction regime. Benefitting from this heterogeneous response, the m-GFETs can implement optoelectronic AND/OR logic functions. Our approach represents a step forward in the field of molecular scale electronics with implications in sensing and computing based on sustainable chemicals.
缺乏可重复性阻碍了分子器件集成到大规模电路中。因此，结合原位表征可以帮助理解导致不同器件之间出现差异的多种特征。在这项工作中，我们报告了基于 11-（二茂铁基）十一烷硫醇（FcCSH）微自组装单层（μSAM）和高质量石墨烯（Gr）的混合分子石墨烯场效应晶体管（m-GFET）的实现，采用背栅结构。一方面，Gr 能够进行氧化还原电子转移，避免分子降解，并允许进行原位光谱学研究。另一方面，分子电极修饰将 Gr 的狄拉克点（V）移至中性，并且在 Gr 电子输运区域产生光电流。得益于这种异质响应，m-GFET 可以实现光电 AND/OR 逻辑功能。我们的方法代表了分子尺度电子学领域的一个进步，对于基于可持续化学物质的传感和计算具有重要意义。
