Eur. Phys. J. AP
Volume 15, Number 1, July 2001
|Page(s)||23 - 33|
|Section||Organic Materials and Devices|
|Published online||15 July 2001|
Sublimation and deposition behaviour of palladium (II) acetylacetonate
Department of Chemical Engineering, University College London,
Torrington Place, London, WC1E 7JE, UK
Corresponding author: email@example.com
Revised: 2 March 2001
Accepted: 27 March 2001
Published online: 15 July 2001
Sublimation and deposition of the metal-organic complex palladium (II) acetylacetonate [ Pd(acac)2] was investigated through thermogravimetry and XRD. The temperature range for sublimation, avoiding thermal decomposition, was determined to be 100−160 °C and required to take place in the presence of an inert gas such as helium. The complex was found to be highly unstable in the presence of hydrogen. The Clausius-Clapeyron equation determined is . Deposition of the complex on monolithic substrates required the presence of adsorption sites. For the system investigated, change of the apparent deposition activation energy was found to take place within the range 100−150 °C. To obtain Pd metal particles, the precursor was reduced in hydrogen at a subsequent stage and temperatures close to room temperature were found to be sufficient.
PACS: 82.20.Pm – Rate constants, reaction cross sections, and activation energies / 81.15.Gh – Chemical vapor deposition (including plasma-enhanced CVD, MOCVD, etc.)
© EDP Sciences, 2001
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