Thermoelectric properties of SnO2-based ceramics doped with Nd, Hf or Bi

Yanagiya, S.; Nong, Ngo Van; Sonne, Monica; Pryds, Nini

doi:10.1063/1.4731563

Cited by 15 publications

(10 citation statements)

References 11 publications

(13 reference statements)

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“…It could be caused by the uniform Ag doping in the samples or the electron-electron correlation [34]. With 10% Ag doping, Na x CoO 2 achieved the PF as high as 18.92 × 10 −4 W/mK 2 at~1100 K with the carrier density of~10 21 /cm 3 [35]. Compared with un-doped NaCoO 2 , other dopants (Y, Nd, Sr, Sm) have little effects on improving PF values [36], and some dopants (Ni, Yb) even have negative effects [36,37].…”

Section: Fundamental Physics Of Thermoelectric Metal Oxidesmentioning

confidence: 99%

“…Rubenis et al [100] reported that the TE properties of Sn 1 [21] reported that Bi increased the electrical conductivity by increasing the number of free electrons in SnO 2 , where Bi behaves as a donor. Also, the addition of CuO to the Sb-doped SnO 2 increased the PF at a high temperature (T > 1000 K).…”

Section: Sno 2 -Basedmentioning

confidence: 99%

“…To this end, the focus of this review article is on examining the metal oxide potentials for TE power generation with an emphasis on materials with high power factor. Effective doping strategies in achieving high power factor are highlighted for various metal oxides, particularly, Na x CoO 2 [15], Ca 3 Co 4 O 9 [16], BiCuSeO [17], CaMnO 3 [18], SrTiO 3 [19], ZnO-based [20], SnO 2 -based [21], and In 2 O 3 -based [22] alloys. More broadly, recent advancement of metal oxides for potential commercial applications in thermal-and electrical-related fields is summarized, which includes TE power generators, solar cells, and sensors.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Metal oxides for thermoelectric power generation and beyond

Feng

Jiang

Ghafari

et al. 2017

Adv Compos Hybrid Mater

116

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Metal oxides are widely used in many applications such as thermoelectric, solar cells, sensors, transistors, and optoelectronic devices due to their outstanding mechanical, chemical, electrical, and optical properties. For instance, their high Seebeck coefficient, high thermal stability, and earth abundancy make them suitable for thermoelectric power generation, particularly at a high-temperature regime. In this article, we review the recent advances of developing high electrical properties of metal oxides and their applications in thermoelectric, solar cells, sensors, and other optoelectronic devices. The materials examined include both narrow-band-gap (e.g., Na x CoO 2 , Ca 3 Co 4 O 9 , BiCuSeO, CaMnO 3 , SrTiO 3 ) and wide-band-gap materials (e.g., ZnO-based, SnO 2 -based, In 2 O 3 -based). Unlike previous review articles, the focus of this study is on identifying an effective doping mechanism of different metal oxides to reach a high power factor. Effective dopants and doping strategies to achieve high carrier concentration and high electrical conductivities are highlighted in this review to enable the advanced applications of metal oxides in thermoelectric power generation and beyond.

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Section: Fundamental Physics Of Thermoelectric Metal Oxidesmentioning

confidence: 99%

Section: Sno 2 -Basedmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Metal oxides for thermoelectric power generation and beyond

Feng

Jiang

Ghafari

et al. 2017

Adv Compos Hybrid Mater

116

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“…Lately, Behr et al reported the room temperature (RT) electrical resistivity values of a 1 mol% Sb‐doped polycrystalline pellet and a 0.1 mol% Sb‐doped single crystal, which are 0.189 Ω cm and 48 S cm −1 , respectively. For polycrystalline SnO 2 ‐based materials, Yanagiya et al studied several doping elements, such as Sb, Zn, Nb, Hf, Bi and reported good electrical resistivity (about 0.0033 Ω cm, at 700 K) and Seebeck coefficient values (about −150 μVK −1 , for the same temperature) for Sn 0.97 Sb 0.01 Zn 0.01 Bi 0.01 O 2 samples. Also, Tsubota et al investigated the thermoelectric behavior of SnO 2 ceramics doped with Ti and Sb up to 1073 K and obtained a maximum ZT = 0.026 for the Sn 0.98 Ti 0.01 Sb 0.01 O 2 sample.…”

Section: Introductionmentioning

confidence: 99%

Preparation and study of the thermoelectric properties of nanocrystalline Sn_1−xTa_xO₂ (0 ≤ x ≤ 0.04)

Pham

et al. 2015

Physica Status Solidi (a)

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Sn 1-x Ta x O 2 (0 x nominal 0.04) nanoparticles, smaller than 10 nm, were synthesized by co-precipitation method. The solubility limit of Ta (about 0.8% mol) was carefully studied by combination of XRD, SEM, and ICP analysis. The obtained powders were sintered by using the spark plasma sintering (SPS) technique, leading to dense pellets ($95-97% density), composed of 50-70 nm grains. XPS results suggest that no Sn 2þ is present in our samples and that the carbon contamination as well as oxygen vacancies, issues from SPS, are not completely removed with a post-SPS heat treatment at 873 K. However, this small carbon contamination does not significantly influence the electrical properties. Thermoelectric properties were investigated and the best composition was found to be Sn 0.99 Ta 0.01 O 2 (x ¼ 0.01), with r ¼ 4 Â 10 À3 Vcm, S ¼ À46 mVK À1, and k $ 7 WK À1 m À1, at room temperature. This low thermal conductivity, as compared to those of micro-sized SnO 2 -based materials in the literature, is explained by the nanocrystalline character of the samples.

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“…The addition of heavy metals has been reported to improve the thermoelectric properties of SnO 2 [33]. The thermoelectric properties of Sb-doped SnO 2 have been extensively studied [33][34][35][36][37], but Bi-doped SnO 2 has rarely been studied. Bismuth and antimony are known to have similar chemical properties due to their similar positions in the periodic table of elements.…”

Section: Introductionmentioning

confidence: 99%

Bi-Doped SnO2 Transparent Conducting Thin Films Deposited By Spray Pyrolysis: Structural, Electrical, Optical And Photo-Thermoelectric Properties

Khademi

Bagheri–Mohagheghi

Shirpay

2021

Preprint

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In this research, light and heavy Bi-doped SnO2 thin films were prepared on glass substrates by spray pyrolysis technique. The effect of heavy doped-Bi on the structural, morphological, electrical, photo-thermo-electrical, optical properties of SnO2 films has been investigated. The Bi/Sn atomic ratios (x = [Bi/Sn]) were varied from 0 to 0.30 in the spray solution. X-ray diffraction analysis showed the formation of SnO2 tetragonal rutile structure in low doped deposited films and amorphous structure for heavy Bi-doped SnO2. Also, the SnO2-Bi2O3 binary thin films were formed for x= [Bi/Sn] =0.05. Scanning electron microscopy (SEM) images indicated that nanostructure of the condensed films has a rectangular-particle growth toward particle- spherical growth. The Hall effect measurements have shown n-type conductivity in all deposited films. The lowest sheet resistance of 39.3 MΩ/□ and highest carrier concentration of n=4.53 × 1018 cm−3 were obtained for the thin film deposited with x = 0.10. The maximum of the Seebeck coefficient (S)=325 μVK−1 and figure of merit (ZT) = 1.85 was obtained for the thin film deposited with x = 0.20. The average transmittance of films varied over the range of T=72%-84%. The band gap values of samples were obtained in the range of Eg=3.52–3.88 eV for direct band gap. From the photoconductivity studies, the sample prepared with x = 0.20 exhibited the highest photoconductivity among the SnO2: Bi thin films.

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Thermoelectric properties of SnO2-based ceramics doped with Nd, Hf or Bi

Cited by 15 publications

References 11 publications

Metal oxides for thermoelectric power generation and beyond

Metal oxides for thermoelectric power generation and beyond

Preparation and study of the thermoelectric properties of nanocrystalline Sn_1−xTa_xO₂ (0 ≤ x ≤ 0.04)

Bi-Doped SnO2 Transparent Conducting Thin Films Deposited By Spray Pyrolysis: Structural, Electrical, Optical And Photo-Thermoelectric Properties

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Thermoelectric properties of SnO2-based ceramics doped with Nd, Hf or Bi

Cited by 15 publications

References 11 publications

Metal oxides for thermoelectric power generation and beyond

Metal oxides for thermoelectric power generation and beyond

Preparation and study of the thermoelectric properties of nanocrystalline Sn1−xTaxO2 (0 ≤ x ≤ 0.04)

Bi-Doped SnO2 Transparent Conducting Thin Films Deposited By Spray Pyrolysis: Structural, Electrical, Optical And Photo-Thermoelectric Properties

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Preparation and study of the thermoelectric properties of nanocrystalline Sn_1−xTa_xO₂ (0 ≤ x ≤ 0.04)