| Autor: |
Bonello, Bernard, Louis, Gérard, Battioni, Pierrette |
| Předmět: |
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| Zdroj: |
Review of Scientific Instruments; Jan2003, Vol. 74 Issue 1, p889, 3p |
| Abstrakt: |
Using the picosecond acoustic technique, we have studied how the morphology of the organic molecule affects the thickness of the interfacial layer in organic/aluminum heterostructures. We compare the photoelastic responses of two phthalocyanine and two porphyrine derivatives. Each molecule is constituted of a rigid macrocycle, which is identical for all molecules in a given family, surrounded by hydrocarbon chains having different lengths. For both phthalocyanine and porphyrine derivatives, longer side chains lead to slightly thinner interfaces. The data analysis requires prior knowledge of the sound velocity in the organic layer; we show how we measured this physical parameter in organic layers the thickness of which is in the submicrometer range. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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