Antimony doped tin oxide nanoparticles and their assembly in mesostructured film

Müller, Vesna; Rasp, Matthias; Štefanić, Goran; Günther, Sebastian; Rathouský, Jiřı́; Niederberger, Markus; Fattakhova‐Rohlfing, Dina

doi:10.1002/pssc.201000129

Cited by 11 publications

(5 citation statements)

References 12 publications

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“…For the annealed samples, a general trend toward slightly higher resistivity is observed for doping amounts higher than 10 %, while at 5 % the resistivity is generally lower for annealing temperatures beyond 400 °C. This is expected as for many ATO thin film and pelleted systems, the best conductivity was found for antimony contents between 3 and 10 %, as confirmed by XPS and EDX measurements [15,43,[48][49][50], which is explained by a shift of the Sb 3? /Sb 5?…”

Section: Resultssupporting

confidence: 60%

Strategies to improve the electrical conductivity of nanoparticle-based antimony-doped tin oxide aerogels

Rechberger

Städler

Tervoort

et al. 2016

J Sol-Gel Sci Technol

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We present different strategies to improve the electrical conductivity of antimony-doped tin oxide aerogels assembled from preformed nanosized building blocks. By adjusting the annealing atmosphere and temperature conditions, additional UV treatment to remove surface organics prior to annealing and by tuning the antimony content of the nanoparticles, different strategies are employed to influence the properties of the supercritically dried aerogels before and after gelation. In the framework of this study, also the formation of pure SnO 2 particlebased aerogels could be achieved. Furthermore, we present an experimental setup for analyzing the electrical conductivity of porous and fragile aerogel monoliths based on a four-point probe. While the annealing atmosphere does not significantly affect the resistivity, UV treatment leads to a resistivity decrease in around 50 %. It is found that the resistivity of the samples can be tuned by altering the antimony content, offering very low-resistivity levels down to 4.5 X cm, while the surface areas remained high without significant crystal growth for the doped samples.

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Section: Resultssupporting

confidence: 60%

Strategies to improve the electrical conductivity of nanoparticle-based antimony-doped tin oxide aerogels

Rechberger

Städler

Tervoort

et al. 2016

J Sol-Gel Sci Technol

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“…The calcined powder shows a comparably high surface area of 90 m 2 g À1 ; however, this can be explained by smaller crystal sizes of the powder (4.4 nm) compared to the aerogel (6 nm). The obtained surface areas are still considerably higher than those found for template assisted sol-gel derived conducting ATO films, 25 spin coated ATO films 26 or inorganic-organic sol-gel approaches. 27 Also values for undoped tin oxide in nonaqueous bulk mesoporous SnO 2 28 show lower surface values.…”

mentioning

confidence: 62%

Assembly of antimony doped tin oxide nanocrystals into conducting macroscopic aerogel monoliths

2014

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“…Although achieving high doping levels in nanoparticles by wet-chemical synthesis is challenging, nanoparticles of FTO and ATO , have been realized from solution. Mesoporous films of such nanoparticles have been made by block copolymer templating − or by simple doctor blading . Nanoparticle systems are significantly less conductive than their compact film counterparts due to grain boundary scattering, which limits their electron mobilities .…”

Section: Introductionmentioning

confidence: 99%

Transparent Conducting Aerogels of Antimony-Doped Tin Oxide

Correa‐Baena

Agrios

2014

ACS Appl. Mater. Interfaces

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Bulk antimony-doped tin oxide aerogels are prepared by epoxide-initiated sol-gel processing. Tin and antimony precursors are dissolved in ethanol and water, respectively, and propylene oxide is added to cause rapid gelation of the sol, which is then dried supercritically. The Sb:Sn precursor mole ratio is varied from 0 to 30% to optimize the material conductivity and absorbance. The materials are characterized by electron microscopy, transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy (XPS), nitrogen physisorption analysis, a four-point probe resistivity measurement, and UV-vis diffuse reflectance spectroscopy. The samples possess morphology typical of aerogels without significant change with the amount of doping. Calcination at 450 °C produces a cassiterite crystal structure in all aerogel samples. Introduction of Sb at 15% in the precursor (7.6% Sb by XPS) yields a resistivity more than 3 orders of magnitude lower than an undoped SnO2 aerogel. Calcination at 800 °C reduces the resistivity by an additional 2 orders of magnitude to 30 Ω·cm, but results in a significant decrease in surface area and pore volume.

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Antimony doped tin oxide nanoparticles and their assembly in mesostructured film

Cited by 11 publications

References 12 publications

Strategies to improve the electrical conductivity of nanoparticle-based antimony-doped tin oxide aerogels

Strategies to improve the electrical conductivity of nanoparticle-based antimony-doped tin oxide aerogels

Assembly of antimony doped tin oxide nanocrystals into conducting macroscopic aerogel monoliths

Transparent Conducting Aerogels of Antimony-Doped Tin Oxide

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