Influence of the concentration of Sb2O3 and the viscosity of the precursor solution on the electrical and optical properties of SnO2 thin films produced by the Pechini method

Bernardi, M. I. B.; Soledade, L. E. B.; Santos, I. A.; Leite, E. R.; Longo, Elson; Varela, José Arana

doi:10.1016/s0040-6090(01)01770-9

Cited by 66 publications

(38 citation statements)

References 20 publications

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“…The instrumental broadening was measured from a SiO 2 standard sample crashed from a single crystal. It was used a modified version the Rietveld refinement program DBWS 9807c [8], which is an upgraded version of the DBWS 9411 program [12].…”

Section: Methodsmentioning

confidence: 99%

Development of metal oxide nanoparticles by soft chemical method

Bernardi¹,

Feitosa

Paskocimas

et al. 2009

Ceramics International

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Section: Methodsmentioning

confidence: 99%

Development of metal oxide nanoparticles by soft chemical method

Bernardi¹,

Feitosa

Paskocimas

et al. 2009

Ceramics International

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“…The microstructure of the resulting film is very dependent on the type of nucleation, being dependent on the pyrolysis temperature, heating rate and crystallization temperature (Schwartz et al 2004). The thickness of each deposited film can tailored from a few to a few hundred nanometers by varying the cation concentration and viscosity of the solution, or by changing the spinning or dipping speed (Bernardi et al 2002;Sunde et al 2014). The total thickness of the film can also be increased by repeating the deposition procedure.…”

Section: Film Depositionmentioning

confidence: 99%

“…Layers ranging from 10 to several hundreds of nm could be prepared. Bernardi et al prepared films of antimony-doped tin oxide (ATO) with varying thickness by changing the viscosity by carefully adding or evaporating water before dip coating (Bernardi et al 2002). Two films with the same total thickness, consisting of seven and one layers, respectively, are shown in Figure 11.…”

Section: Transparent Conducting Oxidesmentioning

confidence: 99%

Modified Pechini Synthesis of Oxide Powders and Thin Films

Sunde

Grande

Einarsrud

2016

Handbook of Sol-Gel Science and Technology

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The modified Pechini method has become one of the most popular synthesis methods for complex oxide materials due to its simplicity and versatility. The method can be applied to synthesize nano-crystalline powders, bulk materials as well as oxide thin films. Here, we present a comprehensive review of the method with focus on the chemistry through the three stages of the process; preparation of stable aqueous solution, poly-esterification to form a solid polymeric resin and finally decomposition/combustion of the resin to form an amorphous oxide followed by crystallization of the desired oxide phase. The review include

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“…Otros investigadores que han utilizado el método Pechini para obtener películas de SnO 2 fueron Bernanrdi y colaboradores (26). Ellos encontraron que para recubrimientos de SnO 2 , dopados con Sb, el número de capas, el nivel de dopado y la viscosidad de la resina definen las propiedades eléctricas y ópticas de los mismos; ellos trabajaron con viscosidades de 4cP y 6cP que las modificaron adicionando agua al sistema.…”

Section: Introductionunclassified

Obtención de nano-estructuras bi-dimensionales de SnO<sub>2</sub> utilizando el método pechini: estudio de la conformación de la resina

Mosquera¹,

Páez²

2008

Bol. Soc. Esp. Ceram. Vidr.

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A pesar que el método de precursor polimérico, Pechini es ampliamente utilizado en la síntesis de óxidos, los procesos fisicoquímicos que ocurren durante el mismo no se han discutido en detalle; tal es el caso de la conformación de la resina que se obtiene en una de las etapas del proceso. Conociendo la evolución de esta resina, y como se modifican los parámetros más importantes de la misma, se podrían determinar las condiciones más adecuadas para conformar películas delgadas a través de este método. En este trabajo se estudio la evolución de la resina del sistema de estaño considerando parámetros como pH, viscosidad, tiempo y temperatura de calentamiento de la misma. Para este estudio se utilizó espectroscopía infrarroja (FTIR) y medidas de viscosidad de la resina en diferentes instantes del proceso. Los resultados de espectroscopía IR indican que a medida que avanza el tiempo de envejecimiento de la resina, a una temperatura entre 80 y 100ºC y un pH de ∼6,5, se fortalecen los enlaces Sn-O. Con esta resina se conformaron recubrimientos definiéndose un valor de 110cP como el más adecuado para favorecer la homogeneidad y adherencia de los mismos. El tamaño de grano en la película fue de ∼110nm lo que indica que el proceso realizado permite obtener nano-estructuras bidimensionales. Palabras clave: SnO 2 , Pechini, Resina, películas delgadas, nano-estructura. Bidimensional nanostructures of SnO 2 obtained by the pechini method: study of the resin conformationPechini method has been widely used in the synthesis of oxides, but the physicochemical process that happens during this one have not been discussed in detail, for example the resin conformation that is obtained in one of the stages of the process. Knowing the resin evolution and since the most important parameter of this one are modified, it could determinate the most appropriate conditions to conform thin films though the Pechini method. In this work the resin evolution of the tin system considering parameters like pH, viscosity, time and temperature of heating were studied. Infrared spectroscopy (FTIR) and viscosity measures in differents steps of the process were used. The IR spectroscopy results shows that as it advances the aging time of the resin, to a temperature between 80 and 100ºC and a pH of 6,5, Sn-O bonds are strengthen. Films were conformed with the resin obtained during the pechini process, it being defined a value of 110cP as the most appropriate to favor the homogeneity and adherence of this ones. The grain size film was of ∼110nm what indicates that the realized process allows to obtain bidimensional nano-structures.

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Influence of the concentration of Sb2O3 and the viscosity of the precursor solution on the electrical and optical properties of SnO2 thin films produced by the Pechini method

Cited by 66 publications

References 20 publications

Development of metal oxide nanoparticles by soft chemical method

Development of metal oxide nanoparticles by soft chemical method

Modified Pechini Synthesis of Oxide Powders and Thin Films

Obtención de nano-estructuras bi-dimensionales de SnO<sub>2</sub> utilizando el método pechini: estudio de la conformación de la resina

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