Change in the electrical conductivity of SnO2 crystal from n-type to p-type conductivity

Villamagua, Luis; Stashans, Arvids; Lee, Po Ming; Liu, Yen Shuo; Liu, Cheng Yi; Carini, Manuela

doi:10.1016/j.chemphys.2015.03.002

Cited by 29 publications

(14 citation statements)

References 33 publications

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“…Atoms of Zr, Ti, Sn and Si were considered as extrinsic defects in CeO2 in an amount of 1 per supercell which gave the relation of doping to Ce atoms X/(Ce + X) (Xdoping atom) equal to 3.1%. Following the DFT+U approach, delectrons of Zr, Ti, Sn were represented respectively with U-values of 2.0 eV 26,44 , 4.2 eV 45 , 4.0 eV 46,47 , as implemented in previous theoretical works. Spin-polarization was enabled whenever it was necessary.…”

Section: Computational Details 21 Structural and Optical Propertiesmentioning

confidence: 99%

Doping-induced modulation of electronic, optical and wetting properties of CeO2

Mamedov

Karazhanov

2022

Preprint

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Recently, CeO2 as well as other Rare-Earth Oxides (REOs) have become known as water repelling materials which enables their usage in glass industry. In this study, we investigate electronic, optical and wetting properties of pure and doped CeO2 by first-principles calculations. It is established that introduction of tetravalent doping atoms (Zr, Ti, Sn and Si) significantly modifies the optical response of CeO2 in the visible range by shifting the absorption edge which also effects on the refractive index of the material. For these systems, the water contact angle has been computed through adsorption energy of water layers. We report the intrinsic hydrophilicity of the low-index surfaces of CeO2, which is enhanced by introduction of the impurity atom. Influence of the dopants on the oxygen vacancy formation energy E_f (V_O ) is considered and discussed with respect to its possible effect on the hydrophobic behavior of CeO2. It is found out that all the considered doping atoms reduce E_f (V_O ) , resulting in enhanced adsorption of the air hydrocarbons at the surface, which leads to an increased water contact angle. Based on the obtained results, an assessment on the applicability of doped CeO2 in glass industry is made. It is concluded that Zr-doped CeO2 possesses the most prominent properties among considered systems for the application as transparent layer.

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Section: Computational Details 21 Structural and Optical Propertiesmentioning

confidence: 99%

Doping-induced modulation of electronic, optical and wetting properties of CeO2

Mamedov

Karazhanov

2022

Preprint

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“…[17][18][19][20] Due to its abundant lattice and surface defects/vacancies, tetragonal rutile SnO 2 , as an n-type semiconducting oxide, finds applications in gas sensors, solar cells, semiconductor devices, and electrode materials. [21][22][23] Previous investigations have validated that the surface defect enables the adsorption and activation of gaseous O 2 , thus resulting in the generation of abundant active O 2 À and O 2 2À sites, [24][25][26] whereas these surface oxygen species on pure SnO 2 can be relinquished when calcined at temperatures exceeding 300 1C, which thus limits its redox property and reactivity. 27,28 The incorporation of secondary metal ions in the SnO 2 matrix has been reported to effectively stabilize the surface-active oxygen sites.…”

Section: Introductionmentioning

confidence: 99%

Doping SnO₂ with metal ions of varying valence states: discerning the importance of active surface oxygen species vs. acid sites for C₃H₈ and CO oxidation

Yan,

Liu,

et al. 2024

Phys. Chem. Chem. Phys.

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“…An important aspect to achieve high efficiencies in thin‐film solar cells is the implementation of light management concepts. Among the various types of transparent conductive oxide (TCO) layers investigated , aluminum‐doped zinc oxide (ZnO:Al) is frequently utilized as a front TCO layer in solar cells . Texturing of the front transparent conductive oxide (TCO) layer is a commonly used approach to maintain appropriate light management schemes.…”

Section: Introductionmentioning

confidence: 99%

Influence of ZnSnO _x barrier layer on the texturing of ZnO:Al layers for light management in flexible thin-film silicon solar cells

Wilken

Finger

Smirnov

2017

Phys. Status Solidi A

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Transparent polymer films such as polyethylene terephthalate (PET) present a cost efficient substrate material for flexible solar cells. In addition to certain process temperature limitations, these materials are permeable to moisture and/or oxygen, and additional barrier layers are required to prevent the diffusion of contaminating atoms into the photovoltaic device. In this study, the influence of a ZnSnOx barrier layer deposited on PET substrates on the properties of the subsequently grown low temperature (<140 °C) aluminum‐doped zinc oxide (ZnO:Al) layers is examined. We investigate the electrical and optical properties, as well as surface topography of ZnO:Al layers grown on PET and PET/ZnSnOx substrates before and after wet‐chemical etching treatment, needed to maintain the advanced light management schemes in solar cells. A‐Si:H solar cells show an improvement in all photovoltaic parameters when ZnSnOx barrier layers are applied on PET substrates, leading to a remarkable increase in efficiency from 4.8 to 6.9%.

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Change in the electrical conductivity of SnO2 crystal from n-type to p-type conductivity

Cited by 29 publications

References 33 publications

Doping-induced modulation of electronic, optical and wetting properties of CeO2

Doping-induced modulation of electronic, optical and wetting properties of CeO2

Doping SnO₂ with metal ions of varying valence states: discerning the importance of active surface oxygen species vs. acid sites for C₃H₈ and CO oxidation

Influence of ZnSnO _x barrier layer on the texturing of ZnO:Al layers for light management in flexible thin-film silicon solar cells

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Change in the electrical conductivity of SnO2 crystal from n-type to p-type conductivity

Cited by 29 publications

References 33 publications

Doping-induced modulation of electronic, optical and wetting properties of CeO2

Doping-induced modulation of electronic, optical and wetting properties of CeO2

Doping SnO2 with metal ions of varying valence states: discerning the importance of active surface oxygen species vs. acid sites for C3H8 and CO oxidation

Influence of ZnSnO x barrier layer on the texturing of ZnO:Al layers for light management in flexible thin-film silicon solar cells

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Product

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About

Doping SnO₂ with metal ions of varying valence states: discerning the importance of active surface oxygen species vs. acid sites for C₃H₈ and CO oxidation

Influence of ZnSnO _x barrier layer on the texturing of ZnO:Al layers for light management in flexible thin-film silicon solar cells