Electrochromism in nickel oxide-based thin films obtained by chemical bath deposition

Vidales-Hurtado, Mónica Araceli; Mendoza-Galván, A.

doi:10.1016/j.ssi.2008.07.003

Cited by 43 publications

(17 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Compared to the CNTF, the I D /I G ratio of the Ni(OH) 2 /CNTF composite is decreased from 1.27 to 0.88, which is perhaps due to the increase in the size of the sp 2 graphitic domains during the preparation process [21]. The 460 cm À1 band can be attributed to the Ni-O(H) stretching mode, while the bands at 327 and 532 cm À1 can be assigned to E u (T) and A 2u (T) lattice vibrations of Ni(OH) 2 [22]. These results further confirm that Ni(OH) 2 has been successfully anchored on the CNTF.…”

Section: Morphology and Structure Characterizationmentioning

confidence: 97%

Fabrication of three dimensional carbon nanotube foam by direct conversion carbon dioxide and its application in supercapacitor

Wang

et al. 2015

Electrochimica Acta

View full text Add to dashboard Cite

Section: Morphology and Structure Characterizationmentioning

confidence: 97%

Fabrication of three dimensional carbon nanotube foam by direct conversion carbon dioxide and its application in supercapacitor

Wang

et al. 2015

Electrochimica Acta

View full text Add to dashboard Cite

“…It can be noted that the thin film roughness depends on the annealing temperature with the highest thin film roughness of 47.90 nm at 300 ∘ C. Figure 4 is a plot of the absorbance against the wavelength for the thin-film deposited annealed samples with corresponding optical band gap energy. The optical band gap was obtained, by using the Tauc relation [23]…”

Section: Resultsmentioning

confidence: 99%

Investigation on the Structural and Optical Properties of NiO Nanoflakes. Chemical Bath Deposition of Ni(OH)2 Thin Films

2017

View full text Add to dashboard Cite

Porous nickel oxide (NiO) nanoflakes are grown by the chemical bath deposition. The thin films are produced on an ITO/glass substrate and annealed at a variable temperature in a furnace. The structural and optical properties and the surface morphology of the thin films are studied and analyzed. FESEM results display the presence of nanoflakes with the structure of NiO/Ni(OH)2 in thin films that appear to increase in size with the annealing temperature. The sample grown at 300 ∘ C is observed to have the highest surface area dimension. The EDX result reveals that the atomic ratio and weight of the treated sample has a non-stoichiometric value, which results in the-type behavior of the NiO thin film. The result obtained by AFM indicates the highest roughness value (47.9 nm) for a sample grown at 300 ∘ C. The analysis on XRD shows that the NiO nanoflakes possess a cubic structure with the orientation peaks of (111), (200), and (220). This appears with a stronger intensity at 300 ∘ C. Likewise, XRD result approves the absence of the Ni(OH)2 peak at the annealing. For the optical band gap, the UV-Vis measurements give a lower value of 3.80 eV for 300 ∘ C due to the highest crystallinity. The optimum temperature to synthesize high-quality NiO nanoflakes is 300 ∘ C, which can be an important factor for good sensing devices. K e y w o r d s: annealing temperature, nanoflakes, thin film, chemical bath deposition, nickel oxide.

show abstract

“…Lastly, Figure 8 displays the number of effective electrons per formula unit during the absorption process as determined from the sum rule (7). Overall, the extra electron added by the dopant fills the bottom of the conduction band and increases the Fermi level, increasing the number of electrons available for absorption.…”

Section: Optical Absoprtionmentioning

confidence: 99%

“…This compound has a wide band gap around 4.0 eV, is crystalline with cubic structure, and behaves as a p-type semiconductor. Electrochromic layers of these materials can be grown with several deposition techniques such as chemical bath deposition [7,8], spin coating [9,10], sol-gel method [11,12], pulsed laser deposition [13], spray pyrolysis [14,15], electron beam evaporation [16,17], and radio frequency and direct current magnetron sputtering [18,19,20,21]. ECD based on WO 3 and NiO films combined with other TMO can exhibit higher electrochromic properties than those of the individual oxides, making them of the utmost importance for the fabrication of ECD [22].…”

Section: Introductionmentioning

confidence: 99%

Influence of Lithium Interstitial Doping on the Optoelectronic Properties of NiO and WO$_3$

Perez,

Faudoa,

Acuña

et al. 2022

Preprint

View full text Add to dashboard Cite

First principles calculations through density functional theory (DFT)+U method were performed to assess the effect of Li interstitial doping on the optoelectronic properties of NiO and of cubic, hexagonal, and monoclinic WO 3 . The implications on the structural and electronic properties and their relationship with the optical properties, such as dielectric response and absorption coefficient in the context of electrochromism, are discussed. Li interstitial doping (i.e., electron doping) turns these materials metallic-like even for low Li concentration (x < 0.083). In metallic-like materials, optical properties are largely influenced by intraband transitions. Compared to NiO, Li-doped NiO shows larger absorption in the visible region while, with respect to WO 3 , Li-doped WO 3 exhibits an increment in absorption in the whole spectrum, particularly, in the infrared region. These results help to understand the changes in optical properties observed in electrochromic devices based on these materials.

show abstract

Electrochromism in nickel oxide-based thin films obtained by chemical bath deposition

Cited by 43 publications

References 21 publications

Fabrication of three dimensional carbon nanotube foam by direct conversion carbon dioxide and its application in supercapacitor

Fabrication of three dimensional carbon nanotube foam by direct conversion carbon dioxide and its application in supercapacitor

Investigation on the Structural and Optical Properties of NiO Nanoflakes. Chemical Bath Deposition of Ni(OH)2 Thin Films

Influence of Lithium Interstitial Doping on the Optoelectronic Properties of NiO and WO$_3$

Contact Info

Product

Resources

About