Liquid-Processed 2D Aromatic Amorphous Carbon: Defect Engineering and Universal Transport Scaling
Artikel i vetenskaplig tidskrift, 2026
Liquid-processed 2D aromatic amorphous carbons are emerging as a new materials platform in which distorted sp2 networks combine scalability with unconventional electronic transport. Here, we report a deterministic pathway to produce graphene-derived amorphous 2D carbon thin films by combining the water processability of graphene oxide with rapid thermal quenching. During heating, the stepwise removal of oxygen groups generates vacancies and topological defects; rapid traversal of this regime prevents structural recovery and yields a kinetically trapped quasi-amorphous phase, termed quenched reduced graphene oxide (qRGO). XPS and UPS confirm that qRGO maintains predominantly sp2 bonding, indicating a distorted aromatic network rather than a transition to sp3-rich amorphous carbon. Correlative structural and spectroscopic analyses reveal suppressed long-range order and boundary-like defect character in qRGO, contrasting with the vacancy-type defects of nanocrystalline reduced graphene oxide (RGO). Transport measurements show that RGO retains partial coherence and weak localization, whereas qRGO evolves into a strongly disordered regime governed by variable-range hopping. Despite these differences, both systems collapse onto a universal power-law scaling of resistivity. These results demonstrate that thermal-kinetic control of oxygen-driven defect formation provides a scalable route to functional 2D amorphous carbon films.
disordered systems
amorphous 2D materials
graphene-based materials
charge transport
2D phase transition
Författare
F. Liscio
Istituto per lo Studio dei Materiali Nanostrutturati del C.N.R.
Andrea Fondacaro
Consiglio Nazionale delle Ricerche (CNR)
Gaetana Petrone
Consiglo Nazionale Delle Richerche
Federico Chianese
Chalmers, Mikroteknologi och nanovetenskap, Kvantkomponentfysik
Jasper Rikkert Plaisier
Elettra Sincrotrone Trieste
Sara Fiori
Institut Catala de Nanociencia i Nanotecnologia
Consiglio Nazionale delle Ricerche (CNR)
Orlando Castellano
Universita degli studi - Roma Tre
Alice Apponi
Istituto Nazionale di Fisica Nucleare
Nicolò Galvani
Istituto per lo Studio dei Materiali Nanostrutturati del C.N.R.
Verónica Montes García
ISIS - Institut de Science et d'Ingénierie Supramoléculaires
Veronica Valentini
Istituto di Struttura della Materia (CNR-ISM)
Stefano Iacobucci
Istituto di Struttura della Materia (CNR-ISM)
Damiano Ricciarelli
Istituto per la microelettronica e microsistemi (CNR-IMM)
Giuseppe Fisicaro
Istituto per la microelettronica e microsistemi (CNR-IMM)
Antonino Lamagna
Istituto per la microelettronica e microsistemi (CNR-IMM)
Giovanni Maria Vinai
Consiglio Nazionale delle Ricerche (CNR)
E. Placidi
Sapienza Università di Roma
Alessandro Bellucci
Istituto di Struttura della Materia (CNR-ISM)
Daniele Maria Trucchi
Istituto di Struttura della Materia (CNR-ISM)
Paolo Samorì
ISIS - Institut de Science et d'Ingénierie Supramoléculaires
Alessandro Ruocco
Universita degli studi - Roma Tre
Samuel Lara Avila
Chalmers, Mikroteknologi och nanovetenskap, Kvantkomponentfysik
A. Liscio
Consiglo Nazionale Delle Richerche
Small
1613-6810 (ISSN) 1613-6829 (eISSN)
Vol. In PressGraphene Core Project 3 (Graphene Flagship)
Europeiska kommissionen (EU) (EC/H2020/881603), 2020-04-01 -- 2023-03-31.
Ämneskategorier (SSIF 2025)
Materialkemi
Oorganisk kemi
Den kondenserade materiens fysik
Infrastruktur
Myfab (inkl. Nanotekniklaboratoriet)
Styrkeområden
Materialvetenskap
DOI
10.1002/smll.202512128