Simultaneous chemical silver and palladium deposition on porous silicon; FESEM, TEM, EDX and XRD investigation

A. Pap, Krisztián Kordás, Raija Peura, Seppo Leppävuori

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

Simultaneous palladium and silver deposition on porous silicon (PS) by immersion plating from aqueous [Pd(NH3)4]2+ and [Ag(NH3)2]+ complexes were carried out and studied by scanning electron microscopy, transmission electron microscopy, energy dispersive X-ray analysis and X-ray diffraction. As the measurements revealed, the deposits were individual Pd and Ag seeds both in the pores and on the surface of the PS without forming Pd-Ag alloys. Palladium was present in the form of small spherical grains with diameter of 1-40 nm. In case of silver, two types of deposits could be distinguished. When high silver-complex ion concentration was applied, the deposition of Ag grains (d = 60-100 nm) took place in the pores and on the surface as well. In case of lowered [Ag(NH3)2]+ concentrations, the formation of a three-dimensional porous silver networks (built up from silver particles of 30-40 nm in diameter) - on the top surface of the porous silicon layer - was advanced.

Original languageEnglish
Pages (from-to)56-60
Number of pages5
JournalApplied Surface Science
Volume201
Issue number1-4
DOIs
Publication statusPublished - Nov 30 2002

Fingerprint

Porous silicon
Palladium
porous silicon
Silver
palladium
Energy dispersive spectroscopy
silver
Transmission electron microscopy
transmission electron microscopy
Deposits
deposits
porosity
Energy dispersive X ray analysis
ion concentration
plating
Plating
submerging
Seed
seeds
x rays

Keywords

  • Nano-materials
  • Palladium
  • Plating
  • Porous silicon
  • Silver

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Condensed Matter Physics

Cite this

Simultaneous chemical silver and palladium deposition on porous silicon; FESEM, TEM, EDX and XRD investigation. / Pap, A.; Kordás, Krisztián; Peura, Raija; Leppävuori, Seppo.

In: Applied Surface Science, Vol. 201, No. 1-4, 30.11.2002, p. 56-60.

Research output: Contribution to journalArticle

Pap, A. ; Kordás, Krisztián ; Peura, Raija ; Leppävuori, Seppo. / Simultaneous chemical silver and palladium deposition on porous silicon; FESEM, TEM, EDX and XRD investigation. In: Applied Surface Science. 2002 ; Vol. 201, No. 1-4. pp. 56-60.
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