BaTiO3–CuO sputtered thin film for carbon dioxide detection

Mandayo, G.G.; González, F.; Rivas, Isabel; Ayerdi, I.; Herrán, J.

doi:10.1016/j.snb.2006.04.056

Cited by 42 publications

(25 citation statements)

References 9 publications

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“…The most common type of CO 2 sensor so far reported is a potentiometric device combining a solid electrolyte with an auxiliary phase of carbonates (Li 2 CO 3 -BaCO 3 or CaCO 3 ). [1,2] However, chemoresistive gas sensors (e.g., indium tin oxide (ITO), [3] SnO 2 , [4,5] LaOCl [6] and BaTiO 3 [7] ) are also applicable, since they offer interesting advantages such as low-cost, easy implementation and high-reliability. Recent research has shown that indium oxide is a promising material for gas-sensor applications, [8][9][10][11] since it displays high sensitivity to both oxidizing and reducing gases: NO 2 , O 3 , Cl 2 , [12] CO, CH 4 , H 2 , and C 2 H 4 .…”

Section: Introductionmentioning

confidence: 99%

A Novel Mesoporous CaO‐Loaded In₂O₃ Material for CO₂ Sensing

Prim

Pellicer

Rossinyol

et al. 2007

Adv Funct Materials

131

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A mesoporous CaO‐loaded In2O3 material (with Ca/In2O3 ratios ranging from 2.5 to 8.5 at %) has been synthesized and used as resistive gas sensor for the detection of CO2. A nanostructured In2O3 matrix has been obtained by hard template route from the SBA‐15 silica template. Additive presence does not distort the lattice of In2O3, which crystallizes in the Ia3 cubic space group. It has been proved by XRD, HRTEM, Raman and XPS measurements that samples contain not only CaO but also CaCO3 in calcite phase as a consequence of CaO carbonation. Pure In2O3 based sensors are low sensitive to CO2, whereas those containing the additive show an important response in the 300–5000 ppm range of gas concentrations. As seen by DRIFTS, the electrical response arises from the interaction between CO32– and CO2, yielding bicarbonates products. The reaction is water‐assisted, so that hydration of the sensing material ensures sensor reliability whilst its dehydration would inhibit sensor response. The use of CaCO3 instead of CaO does not cause significant differences in electrical and DRIFTS data, which corroborates the important role played by carbonate species in the sensing mechanism.

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Section: Introductionmentioning

confidence: 99%

A Novel Mesoporous CaO‐Loaded In₂O₃ Material for CO₂ Sensing

Prim

Pellicer

Rossinyol

et al. 2007

Adv Funct Materials

131

View full text Add to dashboard Cite

show abstract

“…In this context, the properties of BaTiO 3 -CuO as a sensitive material under carbon dioxide atmospheres have been investigated [1][2][3][4][5][6][7][8][9][10]. Thick film technology and sintering are used to synthesize the material in most of the research works [4][5][6][7][8][9][10], while thin film technology is only reported by the authors [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

“…Thick film technology and sintering are used to synthesize the material in most of the research works [4][5][6][7][8][9][10], while thin film technology is only reported by the authors [1][2][3]. Thin film technology shows advantages in terms of controllability of the process parameters and material properties.…”

Section: Introductionmentioning

confidence: 99%

“…The work function of BaTiO 3 -CuO increases as the CO 2 concentration does [6]. A theory based on the behaviour of the p-n heterojunction between BaTiO 3 (ntype) and CuO (p-type) [1,3] has been developed by the authors [1] and the final equations show how impedance changes (in terms of R and C) depend on φ [1].…”

Section: Introductionmentioning

confidence: 99%

“…In other works, sensitivity enhances when Ag is used as an additive in the sensing film [1][2][3][4]. It is believed that a metal-semiconductor junction is formed between the metal (Ag) and the semiconductor (BaTiO 3 ) and that φ changes will be favoured by this contribution.…”

Section: Introductionmentioning

confidence: 99%

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Sensors, functioning as primary conveyors of perceptual data, stand ready to illuminate the landscape of the intelligent era. Barium titanate, an exceedingly pivotal class of ferroelectric materials for sensor applications, has attracted considerable attention from both commercial and industrial sectors in recent years. Against this backdrop, this paper embarks on a comprehensive examination of sensors founded upon barium titanate across a spectrum of applications. Our investigation commences with a historical analysis of ferroelectric materials, with a specific emphasis on the developmental trajectory of barium titanate. Subsequently, an in‐depth exposition elucidates the attributes and manufacturing processes linked to barium titanate materials, providing readers with insight into the structural and manufacturing aspects of these materials. Ultimately, we introduce a diverse array of sensors tailored to distinct functions within a myriad of domains.

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BaTiO3–CuO sputtered thin film for carbon dioxide detection

Cited by 42 publications

References 9 publications

A Novel Mesoporous CaO‐Loaded In₂O₃ Material for CO₂ Sensing

A Novel Mesoporous CaO‐Loaded In₂O₃ Material for CO₂ Sensing

Solid state gas sensor for fast carbon dioxide detection

Recent Progress on Barium Titanate‐Based Ferroelectrics for Sensor Applications

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BaTiO3–CuO sputtered thin film for carbon dioxide detection

Cited by 42 publications

References 9 publications

A Novel Mesoporous CaO‐Loaded In2O3 Material for CO2 Sensing

A Novel Mesoporous CaO‐Loaded In2O3 Material for CO2 Sensing

Solid state gas sensor for fast carbon dioxide detection

Recent Progress on Barium Titanate‐Based Ferroelectrics for Sensor Applications

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Product

Resources

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A Novel Mesoporous CaO‐Loaded In₂O₃ Material for CO₂ Sensing

A Novel Mesoporous CaO‐Loaded In₂O₃ Material for CO₂ Sensing