Hybrid Interface States and Spin Polarization at Ferromagnetic Metal–Organic Heterojunctions: Interface Engineering for Efficient Spin Injection in Organic Spintronics
Source abstract
Abstract
Ferromagnetic metal–organic semiconductor (FM‐OSC) hybrid interfaces have been shown to play an important role for spin injection in organic spintronics. Here, 11,11,12,12‐tetracyanonaptho‐2,6‐quinodimethane (TNAP) is introduced as an interfacial layer in Co‐OSCs heterojunctions with an aim to tune the spin injection. The Co/TNAP interface is investigated by use of X‐ray and ultraviolet photoelectron spectroscopy (XPS/UPS), near edge X‐ray absorption fine structure (NEXAFS) and X‐ray magnetic circular dichroism (XMCD). Hybrid interface states (HIS) are observed at Co/TNAP interfaces, resulting from chemical interactions between Co and TNAP. The energy level alignment at the Co/TNAP/OSCs interface is also obtained, and a reduction of the hole injection barrier is demonstrated. XMCD results confirm sizeable spin polarization at the Co/TNAP hybrid interface.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Organic Light-Emitting Diodes Research · Magnetism in coordination complexes · Organic and Molecular Conductors Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Physics, Chemistry and Biology Linkoping University SE‐58183 Linkoping Sweden
CiC nanoGUNE Consolider Tolosa Hiribidea, 76 E‐20018 Donostia‐San Sebastian Spain
ISMN‐CNR Via Gobetti 101 40129 Bologna Italy
Division of Theoretical Chemistry and Biology Royal Institute of Technology SE‐10691 Stockholm Sweden
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