Spin coated versus dip coated electrochromic tungsten oxide films: Structure, morphology, optical and electrochemical properties

Deepa, Melepurath; Saxena, Tanuj; Singh, Davinder; Sood, K.N.; Agnihotry, S.A.

doi:10.1016/j.electacta.2005.06.027

Cited by 135 publications

(72 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The electrochromic performance of WO 3 is closely related to its crystallinity. Crystalline WO 3 has a better stability to endure acidic electrolyte without degradation for a longer cyclic time compared to amorphous one, but at the cost of slower response time and smaller coloration efficiency arising from its smaller specific surface area [31]. By increasing the porosity and precisely controlling the crystal size, crystalline WO 3 films with good stability and fast response can simultaneously be achieved.…”

Section: Characterizationmentioning

confidence: 91%

Electrochromic properties of nanostructured tungsten trioxide (hydrate) films and their applications in a complementary electrochromic device

Jiao

Wang

et al. 2012

Electrochimica Acta

View full text Add to dashboard Cite

a b s t r a c tOrthorhombic hydrated tungsten trioxide (3WO 3 ·H 2 O) films consisted of nanosticks and nanoparticles were prepared on fluorine doped tin oxide (FTO)-coated substrate by a facile and template-free hydrothermal method using ammonium acetate (CH 3 COONH 4 ) as the capping agent. Irregular nanobrick films were obtained without capping agent. Due to the highly rough surface, the nanostick/nanoparticle film depicts faster ion intercalation/deintercalation kinetics and a greater coloration efficiency (45.5 cm 2 /C) than the nanobrick film. A complementary electrochromic device based on the nanostick/nanoparticle 3WO 3 ·H 2 O film and Prussian blue (PB) was assembled. As a result, the complementary device shows a higher optical modulation (54% at 754 nm), a larger coloration efficiency (151.9 cm 2 /C) and faster switching responses with a bleaching time of 5.7 s and a coloring time of 1.3 s than a single 3WO 3 ·H 2 O layer device, making it attractive for a practical application.

show abstract

Section: Characterizationmentioning

confidence: 91%

Electrochromic properties of nanostructured tungsten trioxide (hydrate) films and their applications in a complementary electrochromic device

Jiao

Wang

et al. 2012

Electrochimica Acta

View full text Add to dashboard Cite

show abstract

“…Transition Metal Oxides (TMOs) have attracted substantial interest owing to their potential applications such as sensors, solar cells, photocatalysis and electrochromic devices [1][2][3][4][5] . ZnO,TiO 2 , SnO 2 , MoO 3 and WO 3 are the most standard semiconductor metal oxides used in the optoelectronic devices.…”

Section: Introductionmentioning

confidence: 99%

Growth and Characterization of Jet Nebulizer Spray Deposited n-type WO3 thin films for Junction Diode Application

Shanmugasundaram¹,

Thirunavukkarasu²,

Ramamurthy³

et al. 2017

Orient. J. Chem

View full text Add to dashboard Cite

The n-type tungsten oxide (WO 3 ) polycrystalline thin films have been prepared at an optimized parameters (0.20M, 5 ml and 500 o C) using jet nebulizer spray pyrolysis (JNSP) technique. Such prepared WO 3 films were characterized by XRD, SEM, EDAX, UV-vis from I-V. The XRD pattern of the optimized WO 3 film reveals the monoclinic structure. The SEM and EDAX images shows that the surface morphological variations and elements present were confirmed. The optical properties were recorded by UV-vis spectrum and the maximum band gap value was observed as 3.86 eV for 500°C. The maximum conductivity of the prepared WO 3 was recorded as 1.201 x 10 -8 S/cm from I-V characterization for 500°C.Using J-V plot, the diode parameters of n-WO 3 /p-Si prepared at 500°C with 0.2 M and 5 ml were measured under dark and illumination. The ideality factor (n) and barrier height (Φ b ) values of n-WO 3 /p-Si diode are obtained as 5.8 and 0.80 eV in dark and 3.9 and 0.81 eV under illumination.

show abstract

“…The stable TiO 2 sols are used to impregnate the substrates and form the oxide coating by dip or spin-coating techniques. 10 Both the optical and photocatalytic properties of the TiO 2 coatings depend upon the crystalline structure, crystallite size, and thickness and porosity of the films. A highly porous superficial structure is desirable, because it offers a greater number of catalytic sites.…”

Section: Introductionmentioning

confidence: 99%

Enhanced photocatalytic activity of TiO2 films by modification with polyethylene glycol

Ramírez‐Santos¹,

Acevedo–Peña²,

Córdoba³

2012

Quím. Nova

View full text Add to dashboard Cite

Recebido em 15/1/12; aceito em 22/6/12; publicado na web em 18/9/12 Titanium dioxide porous thin films on the Anatase phase were deposited onto glass slides by the sol-gel method assisted with polyethylene glycol (PEG). The dip-coated films were characterized using scanning electron microscopy (SEM), thermogravimetric analysis (TGA and DTG), UV-visible spectroscopy and X-ray diffraction (XRD). The photocatalytic activity of the films was determined by means of methyl-orange oxidation tests. The resultant PEG-modified films were crack-free and developed a porous structure after calcination at 500 °C. Photo-oxidation tests showed the dependency of catalytic activity of the films on the number of layers (thickness) and porosity, i.e. of the interfacial area.

show abstract

Spin coated versus dip coated electrochromic tungsten oxide films: Structure, morphology, optical and electrochemical properties

Cited by 135 publications

References 46 publications

Electrochromic properties of nanostructured tungsten trioxide (hydrate) films and their applications in a complementary electrochromic device

Electrochromic properties of nanostructured tungsten trioxide (hydrate) films and their applications in a complementary electrochromic device

Growth and Characterization of Jet Nebulizer Spray Deposited n-type WO3 thin films for Junction Diode Application

Enhanced photocatalytic activity of TiO2 films by modification with polyethylene glycol

Contact Info

Product

Resources

About