000163863 001__ 163863
000163863 005__ 20251107115329.0
000163863 0247_ $$2doi$$a10.1021/acsaelm.5c01566
000163863 0248_ $$2sideral$$a146054
000163863 037__ $$aART-2025-146054
000163863 041__ $$aeng
000163863 100__ $$aGarcía-Serrano, Aitor
000163863 245__ $$aMolecular Electronics Meets Direct-Write Carbon Nanofabrication via Focused Electron-Beam-Induced Deposition (FEBID): A Platform for Junction Architecture Design
000163863 260__ $$c2025
000163863 5060_ $$aAccess copy available to the general public$$fUnrestricted
000163863 5203_ $$aThe electrical characteristics of a molecular junction are highly sensitive to the nature and uniformity of the molecule|electrode contacts. This gives rise to significant interest in the development of not only the active molecular structures that modulate charge transport and the anchor groups that contact them to the electrodes, but also methods for assembling uniform molecular monolayers on a substrate electrode and subsequent fabrication of a “top electrode” to achieve the reliable fabrication of viable molecular electronic devices. In this contribution, 4-(4-(4-(trimethylsilylethynyl)phenylethynyl)phenylethynyl)aniline was converted to the corresponding diazonium salt and electrografted onto highly oriented pyrolytic graphite (HOPG), resulting in an organized monolayer covalently bonded to the HOPG “substrate” electrode. Subsequently, focused electron-beam-induced deposition was used to form an amorphous carbon top electrode (C-FEBID) onto the monolayer from a naphthalene precursor. By guiding the raster scanning of the electron beam, the position, shape, and thickness of the carbon electrode “written” onto the monolayer can be controlled with nanometer precision. In addition, as a proof-of-principle demonstration of the construction of the interconnects necessary for integration of molecular devices, platinum was deposited precisely on top of the C-FEBID electrodes, using focused-ion-beam-induced deposition of PtMe3CpMe (CpMe = η5-C5H4Me) (Pt-FIBID). The HOPG|molecule|C-FEBID|Pt-FIBID “large area” junctions produced in this manner exhibited excellent reproducibility and were free of short circuits for top-electrode dimensions ranging from 4 × 4 to 8 × 8 μm2. The electrical characteristics of these devices were measured and modeled by using quantum chemical approaches. These results illustrate alternative routes toward the fabrication of planar 2D devices based on molecular monolayers and carbon electrodes.
000163863 536__ $$9info:eu-repo/grantAgreement/ES/AEI/CEX2023-001286-S$$9info:eu-repo/grantAgreement/ES/AEI/PDC2023-145810-I00$$9info:eu-repo/grantAgreement/ES/AEI/PID2022-141433OB-I00$$9info:eu-repo/grantAgreement/ES/AEI/PID2023-146451OB-I00$$9info:eu-repo/grantAgreement/ES/AEI/TED2021-131318B-I00$$9info:eu-repo/grantAgreement/ES/DGA/E31-23R
000163863 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttps://creativecommons.org/licenses/by/4.0/deed.es
000163863 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000163863 700__ $$aSangtarash, Sara
000163863 700__ $$aGonzález-Orive, Alejandro
000163863 700__ $$aSadeghi, Hatef
000163863 700__ $$0(orcid)0000-0001-9193-3874$$aMartín, Santiago$$uUniversidad de Zaragoza
000163863 700__ $$0(orcid)0000-0002-3576-5156$$aHerrer, Lucía$$uUniversidad de Zaragoza
000163863 700__ $$aNichols, Richard J.
000163863 700__ $$aLow, Paul J.
000163863 700__ $$aLambert, Colin J.
000163863 700__ $$0(orcid)0000-0001-9566-0738$$ade Teresa, José María
000163863 700__ $$0(orcid)0000-0002-4123-487X$$aSangiao, Soraya$$uUniversidad de Zaragoza
000163863 700__ $$aCea, Pilar
000163863 7102_ $$12012$$2755$$aUniversidad de Zaragoza$$bDpto. Química Física$$cÁrea Química Física
000163863 7102_ $$12003$$2395$$aUniversidad de Zaragoza$$bDpto. Física Materia Condensa.$$cÁrea Física Materia Condensada
000163863 773__ $$g7, 20 (2025), 9470-9479$$tACS applied electronic materials$$x2637-6113
000163863 8564_ $$s4087950$$uhttps://zaguan.unizar.es/record/163863/files/texto_completo.pdf$$yVersión publicada
000163863 8564_ $$s3196413$$uhttps://zaguan.unizar.es/record/163863/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000163863 909CO $$ooai:zaguan.unizar.es:163863$$particulos$$pdriver
000163863 951__ $$a2025-11-07-10:26:14
000163863 980__ $$aARTICLE