Electrochromism in Self-Assembled Porous Thin Films of Hexagonal Tungsten Trioxide Microspheres Prepared by Aqueous Chemical Growth

Sone, B.T.; Mailu, Stephen N.; Malwela, Thomas; Coetsee, E.; Swart, H.C.; Iwuoha, Emmanuel I.; Maaza, M.

doi:10.1016/s1452-3981(23)07975-0

Cited by 7 publications

(1 citation statement)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thin films grown with chemical methods sometimes provide such noisy patterns. XRD pattern of pure WO 3 thin films showed two peaks at 2θ values 23.22°and 35.81°having Miller indices (100) and (110), respectively, those were reported in the literature as well [27,28]. In case of thin films, only one or few peaks appeared associated with prominent planes, unlike the bulk samples.…”

Section: Structural Studiesmentioning

confidence: 51%

Influence of Gd content on structural, electronic, thermoelectric, and optical properties of WO₃

Ramay,

Shahabuddin,

Alzayed

2023

Mater. Res. Express

View full text Add to dashboard Cite

WO3-based semiconductor materials are optimistic competitors for modern electronic devices because of their outstanding electronic and optical properties. Simulations on pure and Gd-doped WO3 compositions were executed using Tran and Blaha modified Becke-Johnson approximation. Experimentally, thin films of these compositions were prepared using the chemically derived technique. X-ray diffraction spectra of thin films exhibited cubic structure having space group 221-Pm-3m in all compositions. Field emission scanning electron micrographs reveal the uniform growth of thin films with rod-like compact morphology. The density of states spectra for electronic properties demonstrate the main contribution of W-d and O-p for pure WO3 with p-d hybridization while Gd containing composition provides an additional prominent contribution from f-orbital. Band structure shows an indirect transition for WO3 and band gap values were observed as 1.73 eV which decreased with increment of Gd content. A significant change in thermoelectric parameters was observed with an increment of temperature and Gd doping. The maximum value of the refractive index was observed as 3.02 in the visible energy regime and tends to decrease in Gd containing compositions. The experimentally obtained maximum dielectric constant was observed as 7.89 for pure WO3 and decreased to 4.58 for maximum Gd containing composition. Optical parameters like extinction, absorption coefficient, and optical conductivity show a sharp increment in visible energy region which make these compositions favorable for photovoltaic and optoelectronic applications. The experimentally obtained optical parameters are found in good agreement with simulated results obtained through TB-mBJ approximation.

show abstract

Section: Structural Studiesmentioning

confidence: 51%

Influence of Gd content on structural, electronic, thermoelectric, and optical properties of WO₃

Ramay,

Shahabuddin,

Alzayed

2023

Mater. Res. Express

View full text Add to dashboard Cite

show abstract

A review on the prominence of porosity in tungsten oxide thin films for electrochromism

Gupta¹,

Shaik²,

Kumar³

2021

Ionics

View full text Add to dashboard Cite

Magnetic WO3/Fe3O4 as catalyst for deep oxidative desulfurization of model oil

Feng

Zhu

Zhou

et al. 2019

Materials Science and Engineering: B

View full text Add to dashboard Cite

Electrochromism in Self-Assembled Porous Thin Films of Hexagonal Tungsten Trioxide Microspheres Prepared by Aqueous Chemical Growth

Cited by 7 publications

References 19 publications

Influence of Gd content on structural, electronic, thermoelectric, and optical properties of WO₃

Influence of Gd content on structural, electronic, thermoelectric, and optical properties of WO₃

A review on the prominence of porosity in tungsten oxide thin films for electrochromism

Magnetic WO3/Fe3O4 as catalyst for deep oxidative desulfurization of model oil

Contact Info

Product

Resources

About

Electrochromism in Self-Assembled Porous Thin Films of Hexagonal Tungsten Trioxide Microspheres Prepared by Aqueous Chemical Growth

Cited by 7 publications

References 19 publications

Influence of Gd content on structural, electronic, thermoelectric, and optical properties of WO3

Influence of Gd content on structural, electronic, thermoelectric, and optical properties of WO3

A review on the prominence of porosity in tungsten oxide thin films for electrochromism

Magnetic WO3/Fe3O4 as catalyst for deep oxidative desulfurization of model oil

Contact Info

Product

Resources

About

Influence of Gd content on structural, electronic, thermoelectric, and optical properties of WO₃

Influence of Gd content on structural, electronic, thermoelectric, and optical properties of WO₃