SnO2:Sb transparent conducting coatings made by different sol-gel processes

G. Gasparro; Dietmar Ganz; C. Goebbert; Joerg Puetz; Michel Andre Aegerter

doi:10.1117/12.284136

2 October 1997 SnO₂:Sb transparent conducting coatings made by different sol-gel processes

G. Gasparro, Dietmar Ganz, C. Goebbert, Joerg Puetz, Michel Andre Aegerter

Proceedings Volume 3136, Sol-Gel Optics IV; (1997) https://doi.org/10.1117/12.284136
Event: Optical Science, Engineering and Instrumentation '97, 1997, San Diego, CA, United States

Abstract

Single and multilayer sol-gel coatings of transparent antimony-doped tin oxide (SnO₂:Sb) have been prepared on borosilicate and fused silica substrates using either a 5 mole% SbCl₃ doped 0.5 M solution of SnCl₂(OAc)₂ in ethanol or a water suspension of crystalline Sb-doped tin oxide nanoparticles. The nanoscale morphology and the electrical parameters of the layers have been determined after different firing procedures and heating rates varying from 0.2 to 4300 K/s obtained either in a furnace or by cw carbon- dioxide laser irradiation. For a given sintering temperature (approximately 540 degrees Celsius) a slow heating process in furnace leads to porous, homogeneous single and multilayers consisting of small crystallites. They present a high resistivity of about (rho) equals 4 multiplied by 10^-2 (Omega) cm. With increasing heating rate the layers become denser with larger crystallites and the resistivity value decrease down to approximately 7 X 10^-3 (Omega) cm for 4300 K/s (carbon-dioxide laser sintering). It is proposed that the densification of the coatings is determined by a competition between nucleation at low temperatures and the growth of the crystallites at high temperatures.

Citation Download Citation

G. Gasparro, Dietmar Ganz, C. Goebbert, Joerg Puetz, and Michel Andre Aegerter "SnO₂:Sb transparent conducting coatings made by different sol-gel processes", Proc. SPIE 3136, Sol-Gel Optics IV, (2 October 1997); https://doi.org/10.1117/12.284136

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