Particular electronic properties of F16CoPc: A decent electron acceptor material

Rückerl, Florian; Waas, Daniel; Büchner, B.; Knupfer, M.

doi:10.1016/j.elspec.2016.11.013

Cited by 14 publications

(21 citation statements)

References 96 publications

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“…When we attempted to determine the HOMO edges of the ultrathin F 16 CoPc layers, as shown in Supplementary Fig. 2b, the calculated values for the 0.5 and 1.0 nm F 16 CoPc layers are 0.21 and 0.16 eV, respectively, which are very close to the work function of the substrate, while the HOMO of bulk F 16 CoPc is about 1.2 eV 26 . In fact, a typical occupied state arises from the electron transfer from Au to Co3d, which is unique but well known for a F 16 CoPc monolayer 27 .…”

Section: Resultsmentioning

confidence: 87%

Integrated molecular diode as 10 MHz half-wave rectifier based on an organic nanostructure heterojunction

Bandari

Hantusch

et al. 2020

Nat Commun

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Considerable efforts have been made to realize nanoscale diodes based on single molecules or molecular ensembles for implementing the concept of molecular electronics. However, so far, functional molecular diodes have only been demonstrated in the very low alternating current frequency regime, which is partially due to their extremely low conductance and the poor degree of device integration. Here, we report about fully integrated rectifiers with microtubular soft-contacts, which are based on a molecularly thin organic heterojunction and are able to convert alternating current with a frequency of up to 10 MHz. The unidirectional current behavior of our devices originates mainly from the intrinsically different surfaces of the bottom planar and top microtubular Au electrodes while the excellent high frequency response benefits from the charge accumulation in the phthalocyanine molecular heterojunction, which not only improves the charge injection but also increases the carrier density.

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Section: Resultsmentioning

confidence: 87%

Integrated molecular diode as 10 MHz half-wave rectifier based on an organic nanostructure heterojunction

Bandari

Hantusch

et al. 2020

Nat Commun

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“…More recently, F 6 TCNNQ has been introduced into organic devices with advantages such as an even higher electron affinity and a larger molecular mass, which prevents diffusion of the molecule in organic devices [ 30 ]. F 16 CoPc has been applied recently in a few cases only, in order to induce charge transfer across interfaces to other insulating (or semiconducting) materials [ 31 – 33 ]. The electron affinities of the three acceptor molecules are 4.5 eV (F 16 CoPc [ 34 ]), 5.2 eV (F 4 TCNQ [ 35 ]) and 5.6 eV (F 6 TCNNQ [ 36 ]).…”

Section: Reviewmentioning

confidence: 99%

Charge transfer from and to manganese phthalocyanine: bulk materials and interfaces

Rückerl¹,

Waas²,

Büchner³

et al. 2017

Beilstein J. Nanotechnol.

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Manganese phthalocyanine (MnPc) is a member of the family of transition-metal phthalocyanines, which combines interesting electronic behavior in the fields of organic and molecular electronics with local magnetic moments. MnPc is characterized by hybrid states between the Mn 3d orbitals and the π orbitals of the ligand very close to the Fermi level. This causes particular physical properties, different from those of the other phthalocyanines, such as a rather small ionization potential, a small band gap and a large electron affinity. These can be exploited to prepare particular compounds and interfaces with appropriate partners, which are characterized by a charge transfer from or to MnPc. We summarize recent spectroscopic and theoretical results that have been achieved in this regard.

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“…This is thus in line with the experimental fact that both molecules on top of Co(001) possess very similar interfacial spectral features. We emphasize in this context that claims exist in the literature (see 35 and references therein) that the charge transfer, which occurs at a different interface, namely…”

Section: Resultsmentioning

confidence: 99%

“…29,30 For example, fluorinated Cu-phthalocyanine (F 16 CuPc) exhibits a preferred acceptor behavior and has been widely used as an n-type semiconductor in organic electronics. [31][32][33][34] While a series of (spinintegrated) photoemission studies of fluorinated OS on coinage metals (Cu, Ag, Au) exist (see 35 and references therein), no such studies are reported for fluorinated molecules on FM transition metals such as Co. The goal of the present study is to show how doping an OS by substituting H by fluorine influences the interfacial electronic properties, and whether the formation of highly spin-polarized IS is still possible.…”

Section: Introductionmentioning

confidence: 91%

Fluorinated Phthalocyanine Molecules on Ferromagnetic Cobalt: A Highly Polarized Spinterface

et al. 2019

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Spin-resolved photoemission spectroscopy experiments are performed on perfluorinated Co-phthalocyanine (F 16 CoPc) deposited onto ferromagnetic Co(001) to examine how doping (here with fluorine) of an organic semiconductor influences the interfacial electronic properties, and whether the formation of highly spin-polarized interface states is possible. It is found that this later property, initially reported for the non-fluorinated Pc, is also present for the fluorinated system Co/F 16 CoPc. This result shows that doping an organic semiconductor, which is an important and effective method to tailor the electronic transport properties of the molecules, does not inhibit the presence of a highly polarized spinterface.

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Particular electronic properties of F16CoPc: A decent electron acceptor material

Cited by 14 publications

References 96 publications

Integrated molecular diode as 10 MHz half-wave rectifier based on an organic nanostructure heterojunction

Integrated molecular diode as 10 MHz half-wave rectifier based on an organic nanostructure heterojunction

Charge transfer from and to manganese phthalocyanine: bulk materials and interfaces

Fluorinated Phthalocyanine Molecules on Ferromagnetic Cobalt: A Highly Polarized Spinterface

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