Surface-related investigations to characterize different preparation techniques of Sb-doped SnO2 powders

Citation
D. Szczuko et al., Surface-related investigations to characterize different preparation techniques of Sb-doped SnO2 powders, SURF INT AN, 31(6), 2001, pp. 484-491
Citations number
32
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
SURFACE AND INTERFACE ANALYSIS
ISSN journal
0142-2421 → ACNP
Volume
31
Issue
6
Year of publication
2001
Pages
484 - 491
Database
ISI
SICI code
0142-2421(200106)31:6<484:SITCDP>2.0.ZU;2-P
Abstract
Antimony-doped tin oxide powders were prepared using different routes and a nnealing conditions. The influence of preparation on the distribution of an timony in the powders was studied and correlated with the electrical proper ties of the powders. A model of doped SnO2 powder that allows the bulk conc entration of the doping element to be calculated from the XPS results is pr oposed. The doping after crystallization of SnO2 leads to a very strong sur face segregation that is proved by x-ray photoelectron spectroscopy. Antimo ny is incorporated at the largest concentration in the tin oxide lattice wh en it is added during the formation of stannic acid. The annealing temperat ure plays an important role in the antimony distribution. The lower the tem perature, the smaller the crystallite size and the lower the incorporation of antimony in the lattice of SnO2. A strong correlation between bulk conce ntration and electrical and morphological properties was found. Copyright ( C) 2001 John Wiley & Sons, Ltd.