Phthalocyanine dimers in a blend: spectroscopic and theoretical studies of MnPc(δ +)/F(16)CoPc(δ -)

Susi Lindner; Benjamin Mahns; Andreas König; Friedrich Roth; Martin Knupfer; Rico Friedrich; Torsten Hahn; Jens Kortus

doi:10.1063/1.4774060

Phthalocyanine dimers in a blend: spectroscopic and theoretical studies of MnPc(δ +)/F(16)CoPc(δ -)

J Chem Phys. 2013 Jan 14;138(2):024707. doi: 10.1063/1.4774060.

Authors

Susi Lindner¹, Benjamin Mahns, Andreas König, Friedrich Roth, Martin Knupfer, Rico Friedrich, Torsten Hahn, Jens Kortus

Affiliation

¹ IFW Dresden, P.O. Box 270116, D-01171 Dresden, Germany.

PMID: 23320713
DOI: 10.1063/1.4774060

Abstract

We have prepared mixed phthalocyanine films out of MnPc and F(16)CoPc, which were characterized by means of photoemission spectroscopy and electron energy-loss spectroscopy. Our data reveal the formation of MnPc/F(16)CoPc charge transfer dimers in analogy to the related heterojunction. The electronic excitation spectrum of these blends is characterized by a new low energy excitation at 0.6 eV. Density functional theory calculations show that the new signal is caused by a strong absorption between the states of the interface induced two level system.