Alkaline and rare-earth metals doped transparent conductive tin oxide thin films

Islam, Md. Ariful; Mou, Jannatul Robaiat; Hossain, Md. Faruk; Karim, A.M.M. Tanveer; Kamruzzaman, M.; Hossain, Md. Sazzad

doi:10.1007/s10971-020-05362-4

Cited by 13 publications

(4 citation statements)

References 64 publications

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“…were applied to derive the dislocation line density (34.62 x 10 -15 m -2 ), the d-spacing (4.87 Å), and micro-strain (2.05 x10 -3 ) for the (211) peak, elucidating the structural characteristics of the 3% Al-SnO2 thin film. These findings collectively affirm the high crystallinity and distinctive crystallite size of the sample [52]. active.…”

Section: Xrd Raman and Optical Analysis Of Sno2supporting

confidence: 78%

Enhancing Photovoltaic Performance of Bi-Doped Perovskite Solar Cells with Novel Double Electron Transport Layer: Achieving High Open-Circuit Voltage and Efficiency

Khan,

Hussain,

Mustafa

et al. 2024

Preprint

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Perovskite solar cells using pristine and 6% Bi-doped MAPbI2Br perovskite layers are deposited using a spin coating route. XRD analysis reveals that the structure of MAPbI2Br is cubic and the grown films are integrating large grains with low micro-strain. UV-visible spectra of the MAPbI2Br perovskite solar cell and the 6% Bi-doped MAPbI2Br perovskite solar cell show a narrower bandgap (Eg) and higher refractive index. The characteristics of the ETL directly affect the photovoltaic performance of Bi-MAPbI2Br perovskite material. The present report aims to propose a new double electron transport layer composed of TiO2 and Al-SnO2 for MAPbI2Br-based PSCs. In the experimental approach, we reached a high open circuit voltage value of 1.07V, while achieving remarkable power conversion efficiencies of 10.39 %. Notably, this is consistent with the highest Voc achieved so far for Bi-MAPbI2Br-based PSCs with an inorganic electron transport layer (Al-SnO2). The results from this study underscore the importance of the conduction band alignment of MAPbI2Br with the conduction band of Al-SnO2 to enhance electron flow and minimize recombination. This alignment leads to increased Voc and total PCE for PSCs.

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Section: Xrd Raman and Optical Analysis Of Sno2supporting

confidence: 78%

Enhancing Photovoltaic Performance of Bi-Doped Perovskite Solar Cells with Novel Double Electron Transport Layer: Achieving High Open-Circuit Voltage and Efficiency

Khan,

Hussain,

Mustafa

et al. 2024

Preprint

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“…The incorporation of alkali cations could also possibly provide additional carriers center for free charges in the lattice of SnO 2 and contribute to the conductivity of the SnO 2 film. [15,36] The lower conductivity enhancement of SnO 2 with RbF treatment can be assigned to the negligible interaction between Rb and SnO 2 due to low adsorption energy of Rb cations to SnO 2 surface as reported previously. [22] As a consequence of the change in the surface electronic property of the SnO 2 film, a significant shift in the energy band position of the SnO 2 layer was detected.…”

Section: Resultssupporting

confidence: 62%

Unraveling the Mechanism of Alkali Metal Fluoride Post‐Treatment of SnO₂ for Efficient Planar Perovskite Solar Cells

et al. 2023

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The facile synthesis and beneficial properties of tin oxide have driven the development of efficient planar perovskite solar cells (PSCs). To increase the PSC performance, alkali salts are used to treat the SnO2 surface to minimize the defect states. However, the underlying mechanism of alkali cations' role in the PSCs needs further exploration. Herein the effect of alkali fluoride salts (KF, RbF, and CsF) on the properties of SnO2 and PSC performance is investigated. The results show different alkali have significant roles depending on their nature. Larger cations Cs+ preferably locate at the SnO2 film surface to passivate surface defects and enhance conductivity, while smaller cations like Rb+ or K+ cations tend to diffuse into the perovskite layer to reduce trap density of the material. The former effect leads to enhanced fill factor while the latter effect increases the open circuit voltage of the device. It is then demonstrated that a dual cation post‐treatment of the SnO2 layer with RbF and CsF achieves PSC with a significantly higher power conversion efficiency (PCE) of 21.66% compared to pristine PSC with a PCE of 19.71%. This highlights the significance of defect engineering of SnO2 using selective multiple alkali treatment to improve PSC performance.

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“…When Fe 3+ ions replace Sn 4+ ions in the lattice, the different valence states of the substituted ions introduce a negative center of charge (Fe – ). Subsequently, part of the oxygen ions (O 2– ) in the lattice separate to form oxygen, thereby obtaining oxygen vacancies (V O •• ) to maintain charge balance . The electrons ionized by the vacancy can reduce part of Fe 3+ to Fe 2+ .…”

Section: Results and Discussionmentioning

confidence: 99%

“…Subsequently, part of the oxygen ions (O 2− ) in the lattice separate to form oxygen, thereby obtaining oxygen vacancies (V O •• ) to maintain charge balance. 36 The electrons ionized by the vacancy can reduce part of Fe 3+ to Fe 2+ . 37 Upon the formation of Fe 2+ , a new negative center of charge (Fe 2− ) would be introduced due to inequivalent substitution, and the crystal cell is maintained in charge balance by inducing oxygen vacancies (V O…”

Section: ■ Introductionmentioning

confidence: 99%

Thermal Insulation Performance of Novel Coated Fabrics Based on Fe-Doped BaSnO₃ Near-Infrared Reflectance Pigments

Wang

Han

et al. 2021

ACS Sustainable Chem. Eng.

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In this paper, a series of coated fabrics based on Fe-doped BaSnO3 (BaSn1–x Fe x O3−δ, x = 0.00, 0.05, 0.10, 0.20, 0.25) powder pigments were prepared. The results indicate that the developed pigments are substitutional solid solutions with no impurity and the valencies of iron confirmed by X-ray photoelectron spectroscopy (XPS) are +2 and +3. The BaSn1–x Fe x O3−δ pigments possess high near-infrared (NIR) solar reflectance (64.92–79.81%), and the change in the near-infrared reflectance value can be explained by the free carrier concentration and electron trap theory. The pigments exhibit the alteration of yellow-green to brown, which is ascribed to the charge-transfer transition (Sn 5s + 5p ↔ Fe 3d). The BaSn1–x Fe x O3−δ-coated fabrics exhibit excellent high NIR solar reflectance and thermal insulating performance. The NIR solar reflectance of the BaSn0.80Fe0.20O3−δ-coated fabric is up to 64.30%. Compared with those of brown uncoated fabric and conventional brown (Pigment Yellow 42) coated fabric, the inner surface temperature of the BaSn0.80Fe0.20O3−δ-coated fabric is lowered by 7.6 and 4.2 °C, while the heat absorption is reduced by 51.0 and 37.9%, respectively. The coated fabric shows excellent washing durability and chemical stability. In summary, these coated fabrics have the potential to serve as thermal insulation coated fabrics.

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Alkaline and rare-earth metals doped transparent conductive tin oxide thin films

Cited by 13 publications

References 64 publications

Enhancing Photovoltaic Performance of Bi-Doped Perovskite Solar Cells with Novel Double Electron Transport Layer: Achieving High Open-Circuit Voltage and Efficiency

Enhancing Photovoltaic Performance of Bi-Doped Perovskite Solar Cells with Novel Double Electron Transport Layer: Achieving High Open-Circuit Voltage and Efficiency

Unraveling the Mechanism of Alkali Metal Fluoride Post‐Treatment of SnO₂ for Efficient Planar Perovskite Solar Cells

Thermal Insulation Performance of Novel Coated Fabrics Based on Fe-Doped BaSnO₃ Near-Infrared Reflectance Pigments

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Alkaline and rare-earth metals doped transparent conductive tin oxide thin films

Cited by 13 publications

References 64 publications

Enhancing Photovoltaic Performance of Bi-Doped Perovskite Solar Cells with Novel Double Electron Transport Layer: Achieving High Open-Circuit Voltage and Efficiency

Enhancing Photovoltaic Performance of Bi-Doped Perovskite Solar Cells with Novel Double Electron Transport Layer: Achieving High Open-Circuit Voltage and Efficiency

Unraveling the Mechanism of Alkali Metal Fluoride Post‐Treatment of SnO2 for Efficient Planar Perovskite Solar Cells

Thermal Insulation Performance of Novel Coated Fabrics Based on Fe-Doped BaSnO3 Near-Infrared Reflectance Pigments

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Product

Resources

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Unraveling the Mechanism of Alkali Metal Fluoride Post‐Treatment of SnO₂ for Efficient Planar Perovskite Solar Cells

Thermal Insulation Performance of Novel Coated Fabrics Based on Fe-Doped BaSnO₃ Near-Infrared Reflectance Pigments