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[Retracted] Chemical Bath Deposition of PbS:Hg2+ Nanocrystalline Thin Films

2013; Hindawi Publishing Corporation; Volume: 2013; Issue: 1 Linguagem: Inglês

10.1155/2013/507647

1687-4129

R. Palomino‐Merino, O. Portillo Moreno, L. A. Chaltel-Lima, R. Gutiérrez Pérez, Miguel de Icaza, V. M. Castaño,

Copper-based nanomaterials and applications

Nanocrystalline PbS thin films were prepared by Chemical Bath Deposition (CBD) at 40 ± 2°C onto glass substrates and their structural and optical properties modified by in‐situ doping with Hg. The morphological changes of the layers were analyzed using SEM and the X‐rays spectra showing growth on the zinc blende (ZB) face. The grain size determined by using X‐rays spectra for undoped samples was found to be ~ 36 nm, whereas with the doped sample was 32–20 nm. Optical absorption spectra were used to calculate the E g , showing a shift in the range 1.4–2.4 eV. Raman spectroscopy exhibited an absorption band ~ 135 cm −1 displaying only a PbS ZB structure.