Tuning the carrier injection barrier of hybrid metal–organic interfaces on rare earth-gold surface compounds
Artikel i vetenskaplig tidskrift, 2023
Magnetic hybrid metal-organic interfaces possess a great potential in areas such as organic spintronics and quantum information processing. However, tuning their carrier injection barriers on-demand is fundamental for the implementation in technological devices. We have prepared hybrid metal-organic interfaces by the adsorption of copper phthalocyanine CuPc on REAu2 surfaces (RE = Gd, Ho and Yb) and studied their growth, electrostatics and electronic structure. CuPc exhibits a long-range commensurability and a vacuum level pinning of the molecular energy levels. We observe a significant effect of the RE valence of the substrate on the carrier injection barrier of the hybrid metal-organic interface. CuPc adsorbed on trivalent RE-based surfaces (HoAu2 and GdAu2) exhibits molecular level energies that may allow injection carriers significantly closer to an ambipolar injection behavior than in the divalent case (YbAu2).
Författare
R. Castrillo-Bodero
Consejo Superior de Investigaciones Científicas (CSIC)
M. Blanco-Rey
Donostia International Physics Center
Universidad del Pais Vasco / Euskal Herriko Unibertsitatea
Khadiza Ali
Donostia International Physics Center
Chalmers, Mikroteknologi och nanovetenskap, Kvantkomponentfysik
Consejo Superior de Investigaciones Científicas (CSIC)
J. E. Ortega
Universidad del Pais Vasco / Euskal Herriko Unibertsitatea
Donostia International Physics Center
Consejo Superior de Investigaciones Científicas (CSIC)
F. Schiller
Donostia International Physics Center
Consejo Superior de Investigaciones Científicas (CSIC)
L. Fernandez
Consejo Superior de Investigaciones Científicas (CSIC)
Nanoscale
2040-3364 (ISSN) 2040-3372 (eISSN)
Vol. 15 8 4090-4100Ämneskategorier (SSIF 2011)
Oorganisk kemi
Materialkemi
Den kondenserade materiens fysik
DOI
10.1039/d2nr06440e
PubMed
36744853