Comparing a porphyrin- and a coumarin-based dye adsorbed on NiO(001)

Beilstein Journal of Nanotechnology

卷:10

Nathalie Marinakis¹  Catherine E. Housecroft¹  Edwin C. Constable¹  Sara Freund²  Thilo Glatzel²  Antoine Hinaut²  Ernst Meyer² 

[1] Department of Chemistry, University of Basel, BPR 1096, Mattenstrasse 24a, 4058 Basel, Switzerland;

[2] Department of Physics, University of Basel, Klingelbergstrasse 82, 4056 Basel, Switzerland;

关键词: coumarin;    Kelvin probe force microscopy;    metal oxide;    molecular resolution;    nickel oxide (NiO);    non-contact atomic force microscopy;    porphyrin;   

DOI  :  10.3762/bjnano.10.88

来源: DOAJ

【 摘 要 】

Properties of metal oxides, such as optical absorption, can be influenced through the sensitization with molecular species that absorb visible light. Molecular/solid interfaces of this kind are particularly suited for the development and design of emerging hybrid technologies such as dye-sensitized solar cells. A key optimization parameter for such devices is the choice of the compounds in order to control the direction and the intensity of charge transfer across the interface. Here, the deposition of two different molecular dyes, porphyrin and coumarin, as single-layered islands on a NiO(001) single crystal surface have been studied by means of non-contact atomic force microscopy at room temperature. Comparison of both island types reveals different adsorption and packing of each dye, as well as an opposite charge-transfer direction, which has been quantified by Kelvin probe force microscopy measurements.

【 授权许可】

Unknown