Engineering of the energy level alignment at organic semiconductor interfaces by intramolecular degrees of freedom: Transition metal phthalocyanines

M. Grobosch; V. Yu Aristov; O. V. Molodtsova; C. Schmidt; B. P. Doyle; S. Nannarone; M. Knupfer

doi:10.1021/jp901731y

Engineering of the energy level alignment at organic semiconductor interfaces by intramolecular degrees of freedom: Transition metal phthalocyanines

M. Grobosch, V. Yu Aristov, O. V. Molodtsova, C. Schmidt, B. P. Doyle, S. Nannarone, M. Knupfer

Physics

Research output: Contribution to journal › Article › peer-review

46 Citations (Scopus)

Abstract

We have determined the energy level alignment at interfaces between various transition metal phthalocyanines (MnPc, FePc, CoPc, NiPc, CuPc, ZnPc) and gold using photoemission spectroscopy. We demonstrate that the energy level alignment at these interfaces depends upon the type of transition metal. This offers a route to adjust the hole injection barrier via the choice of otherwise equivalent molecular organic semiconductors. In particular, the interfaces MnPc/Au and CoPc/Au are characterized by a small hole injection barrier, which would be advantageous for applications.

Original language	English
Pages (from-to)	13219-13222
Number of pages	4
Journal	Journal of Physical Chemistry C
Volume	113
Issue number	30
DOIs	https://doi.org/10.1021/jp901731y
Publication status	Published - 30 Jul 2009

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
General Energy
Physical and Theoretical Chemistry
Surfaces, Coatings and Films

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abstract = "We have determined the energy level alignment at interfaces between various transition metal phthalocyanines (MnPc, FePc, CoPc, NiPc, CuPc, ZnPc) and gold using photoemission spectroscopy. We demonstrate that the energy level alignment at these interfaces depends upon the type of transition metal. This offers a route to adjust the hole injection barrier via the choice of otherwise equivalent molecular organic semiconductors. In particular, the interfaces MnPc/Au and CoPc/Au are characterized by a small hole injection barrier, which would be advantageous for applications.",

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AU - Grobosch, M.

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AU - Molodtsova, O. V.

AU - Schmidt, C.

AU - Doyle, B. P.

AU - Nannarone, S.

AU - Knupfer, M.

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AB - We have determined the energy level alignment at interfaces between various transition metal phthalocyanines (MnPc, FePc, CoPc, NiPc, CuPc, ZnPc) and gold using photoemission spectroscopy. We demonstrate that the energy level alignment at these interfaces depends upon the type of transition metal. This offers a route to adjust the hole injection barrier via the choice of otherwise equivalent molecular organic semiconductors. In particular, the interfaces MnPc/Au and CoPc/Au are characterized by a small hole injection barrier, which would be advantageous for applications.

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Engineering of the energy level alignment at organic semiconductor interfaces by intramolecular degrees of freedom: Transition metal phthalocyanines

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