Molecular orientation of lead phthalocyanine on (100) oriented single crystal diamond surfaces

Physical Chemistry Chemical Physics : PCCP
Wim DextersKen Haenen

Abstract

Lead phthalocyanine (PbPc) thin films of 5 and 50 nm have been deposited on hydrogen and oxygen terminated single crystal diamond (SCD) using organic molecular beam deposition. Atomic force microscopy and X-ray diffraction (XRD) studies showed that PbPc grown on the hydrogen terminated SCD forms layers with a high degree of crystallinity, dominated by the monoclinic (320) orientation parallel to the diamond surface. The oxygen terminated diamond led to a randomly oriented PbPc film. Absorption and photocurrent measurements indicated the presence of both polymorphs of PbPc, however, the ratio differed depending on the termination of the SCD. Finally, polarized Raman spectroscopy was used to determine the orientation of the molecules of the thin film. The results confirmed the random orientation on the O-terminated diamond. On SCD:H, the PbPc molecules are lying down in accordance with the XRD results.

References

Oct 13, 2000·Physical Review Letters·F MaierL Ley
Mar 28, 2008·Chemical Record : an Official Publication of the Chemical Society of Japan ... [et Al.]·Christian G ClaessensTomás Torres
Nov 20, 2009·Langmuir : the ACS Journal of Surfaces and Colloids·Dongchen QiAndrew T S Wee
Mar 11, 2010·Advanced Materials·Michael Geisler, Thorsten Hugel
Jun 11, 2011·Advanced Materials·Toshihiko KajiMasahiro Hiramoto
Jun 11, 2014·ACS Applied Materials & Interfaces·W S YeapK Haenen

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Citations

Oct 11, 2019·Physical Chemistry Chemical Physics : PCCP·K Priya MadhuriNeena S John

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