Optical, electrical, and electrochemical behavior of p-type nanostructured SnO2:Ni (NTO) thin films

Ebrahimi-Koodehi, S.; Ghodsi, F. E.; Mazloom, J.

doi:10.1007/s10008-018-3951-x

Cited by 10 publications

(2 citation statements)

References 52 publications

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“…In the Nyquist plot, the series resistance ( R s ) including inherent active material resistance, electrolyte resistance and contact resistance obtains from the intersection of the real axis and the curves in the high‐frequency region. The charge transfer resistance ( R ct ) between electrode and electrolyte interface, can be derived from the high‐frequency region, and the slope of the straight line at the low‐frequency region refers to the Warburg diffusion impedance ( Z w ) representing the resistance that exists against the diffusion of OH − into the electrode materials during electrochemical reactions 55 . The calculated R ct of 97.72, 66.18, 9.06, and 4.19 Ω for FM‐MOF, FMO, NFM‐MOF, and NFMO, respectively, indicates that the mixed tri‐metallic electrodes by having smaller charge transfer resistance show better electrochemical responses.…”

Section: Resultsmentioning

confidence: 99%

Mixed metallic NiFe / Mn‐MOF , and derived spinel Ni _0. ₅ Fe ₀ _. ₅ Mn ₂ O ₄ as high‐performance electrochem

Ebrahimi-Koodehi

Ghodsi

Mazloom

2022

Intl J of Energy Research

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Summary Metal oxide/organic framework modification through mixing different metal ions is one of the most ingenious methods in material science. This study investigates elaborately designed bimetallic Fe/Mn, tri‐metallic NiFe/Mn‐metal organic frameworks, and their derived metal oxide nanocomposites for supercapacitor application. The novel bi‐ and tri‐metallic MOFs have shown substantially different morphologies consisting of hexagonal bipyramid and interconnected sheets respectively. After calcination, the materials have altered to spinel FeMn2O4 and Ni0.5Fe0.5Mn2O4 with porous nanorods and hierarchical texture features respectively. The diverse morphologies with considerably large surface areas of the mixed metallic MOFs and the derived oxides make them efficient electrochemical electrodes. Ni incorporation also enhances the capacitive behavior of the electrodes and NiFe/Mn‐MOF exhibits a superior specific capacitance of 1640 F g−1 at 1 A g−1. Furthermore, the FeMn2O4 and Ni0.5Fe0.5Mn2O4 nanostructures reveal highly stable capacitance with retention of 93 and 94% over 5000 cycles respectively. Besides, the assembled NiFe/Mn‐MOF//AC asymmetric supercapacitor represents significant energy and power densities of 75 Wh kg−1 and 1166 W kg−1 at 1.5 A g−1 respectively. It also has relatively high stability with capacitance retention of 73% over 5000 cycles.

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Section: Resultsmentioning

confidence: 99%

Mixed metallic NiFe / Mn‐MOF , and derived spinel Ni _0. ₅ Fe ₀ _. ₅ Mn ₂ O ₄ as high‐performance electrochem

Ebrahimi-Koodehi

Ghodsi

Mazloom

2022

Intl J of Energy Research

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“…Inpasalini et al [36] reported the impact of magnetic ion doping on the magnetic properties of sol-gel spin-coated SnO 2 thin films. Ebrahimi-Koodehi et al [37] investigated the physical and electrochemical properties of Ni-doped SnO 2 thin films by the sol-gel method. Choudhury et al [38] showed that Ni-doped SnO 2 thin films possess semiconducting properties.…”

Section: Introductionmentioning

confidence: 99%

Impact of Ni doping on the structural, morphological, electrical and optical properties of SnO2 thin films by spray pyrolysis technique

et al. 2021

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This work deals with the impact of Ni doping on the structural, morphological, electrical and optical characteristics of SnO 2 thin films, deposited on soda-lime glass microslides (75 mm × 25 mm × 1.2 mm) at 400 °C by facile spray pyrolysis technique. The structural analysis (XRD) confirms that the prepared Ni:SnO 2 thin films belong to the tetragonal rutile structure. The preferred growth orientation along the ( 211) and ( 301) planes shifted to the (200) plane due to the Ni dopant concentration. Scanning electron microscopic analysis reveals that the grain size is effectively modified by various nickel concentration in the films. XPS measurement indicates the presence of Sn 4+ and Ni 2+ in 3.0 at.% Ni:SnO 2 thin film. The electrical studies reveal that all the films show n-type conductivity. The lowest resistivity (2.4 × 10 -3 Ω cm), high carrier concentration (1.267 × 10 20 cm −3 ) and high mobility (120 cm 2 /V s) are obtained for undoped SnO 2 thin films. A slight variation in the resistivity and carrier concentration is observed for Ni-doped SnO 2 films. The optical transmittance of 2.0 at.% Ni:SnO 2 film shows maximum transmittance than undoped SnO 2 film. The photoluminescence spectrum of undoped SnO 2 and Ni:SnO 2 thin films, excited at the wavelength of 325 nm, consists of the strong near band emission at 398 nm. The obtained result shows that 2.0 at.% Ni:SnO 2 film has high optical and electrical conductivity; this could be useful in optoelectronic and gas sensing applications. KeywordsSnO 2 • Thin films • Spray pyrolysis • XRD • XPS • Electrical and optical properties * Ramesh Babu Ramraj

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Tuning of optical bandgap, conductivity parameters, and PL emissions of SnO2:Ni thin films under Ar, N2, and O2 annealing

et al. 2018

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Optical, electrical, and electrochemical behavior of p-type nanostructured SnO2:Ni (NTO) thin films

Cited by 10 publications

References 52 publications

Mixed metallic NiFe / Mn‐MOF , and derived spinel Ni _0. ₅ Fe ₀ _. ₅ Mn ₂ O ₄ as high‐performance electrochem

Mixed metallic NiFe / Mn‐MOF , and derived spinel Ni _0. ₅ Fe ₀ _. ₅ Mn ₂ O ₄ as high‐performance electrochem

Impact of Ni doping on the structural, morphological, electrical and optical properties of SnO2 thin films by spray pyrolysis technique

Tuning of optical bandgap, conductivity parameters, and PL emissions of SnO2:Ni thin films under Ar, N2, and O2 annealing

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Optical, electrical, and electrochemical behavior of p-type nanostructured SnO2:Ni (NTO) thin films

Cited by 10 publications

References 52 publications

Mixed metallic NiFe / Mn‐MOF , and derived spinel Ni 0. 5 Fe 0 . 5 Mn 2 O 4 as high‐performance electrochem

Mixed metallic NiFe / Mn‐MOF , and derived spinel Ni 0. 5 Fe 0 . 5 Mn 2 O 4 as high‐performance electrochem

Impact of Ni doping on the structural, morphological, electrical and optical properties of SnO2 thin films by spray pyrolysis technique

Tuning of optical bandgap, conductivity parameters, and PL emissions of SnO2:Ni thin films under Ar, N2, and O2 annealing

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Product

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Mixed metallic NiFe / Mn‐MOF , and derived spinel Ni _0. ₅ Fe ₀ _. ₅ Mn ₂ O ₄ as high‐performance electrochem

Mixed metallic NiFe / Mn‐MOF , and derived spinel Ni _0. ₅ Fe ₀ _. ₅ Mn ₂ O ₄ as high‐performance electrochem