Reactive sputtering deposition of V2O5−z on flexible PET/ITO substrates for electrochromic devices

Lin, Yung‐Sen; Tsai, Chieh-Yuan

doi:10.1016/j.surfcoat.2008.06.037

Cited by 21 publications

(10 citation statements)

References 27 publications

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“…This study showed that with increase in MoO 3 content transmittance modulation (~T) enhanced, which improved OD and thus CE enhanced from 14.96 to 35.27 cm 2 /C [37]. As a result of our study, the calculated coloration efficiency values for all ECDs were comparable with previous literatures [32][33][34][35][36][37].…”

Section: Electrochromic Properties Of Ecdssupporting

confidence: 86%

“…Table 2. As seen Table 2, bleaching and colored times are better values than 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 literature [36]. Hybrid liquid crystal V 2 O 5 ECDs indicated switching times around 20 seconds [13].…”

Section: Electrochromic Properties Of Ecdsmentioning

confidence: 88%

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Plasma Modified V₂O₅/PEDOT Hybrid Based Flexible Electrochromic Devices

et al. 2017

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Vanadium oxide/poly (3,4‐ ethylenedioxythiophene)(V2O5‐PEDOT) hybrid materials were prepared in a rotating quartz plasma reactor via capacitively coupled radio frequency (RF 13.56 MHz) plasma. Thin films of V2O5‐PEDOT hybrid and V2O5 were obtained by electron beam evaporation technique onto flexible PET substrate for electrochromic devices (ECDs) applications. As a counter electrode, both RF magnetron sputtered MoO3 onto ITO coated PET and only ITO coated PET electrodes were used. Characterizations of the films were carried out via using scanning electron microscopy‐energy dispersive X‐ray spectroscopy (SEM‐EDX) and X‐ray diffraction (XRD). Hybrid ECDs results showed that synergistic effect depending on improved stability between V2O5 and PEDOT. As a result, we developed all solid complementary electrochromic devices including V2O5, V2O5‐PEDOT and MoO3 films. The electrochromic device characteristics such as electrochromic contrast, coloration efficiency, switching time were calculated from optical and electrochemical measurements. The highest coloration efficiency and optical contrast were obtained as 53 cm2/C and 17 % for V2O5‐PEDOT/MoO3‐based ECD.

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Section: Electrochromic Properties Of Ecdssupporting

confidence: 86%

Section: Electrochromic Properties Of Ecdsmentioning

confidence: 88%

Plasma Modified V₂O₅/PEDOT Hybrid Based Flexible Electrochromic Devices

et al. 2017

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“…Electrochromic V 2 O 5 coatings have been prepared by electrodeposition [11,12], "Doctor Blade" [13], reactive sputtering [14], polyol process [15], sol-gel [16], and hydrothermal growth [17]. Strategies…”

Section: Introductionmentioning

confidence: 99%

Using an Atmospheric Pressure Chemical Vapor Deposition Process for the Development of V2O5 as an Electrochromic Material

Vernardou

2017

Coatings

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Vanadium pentoxide coatings were grown by atmospheric pressure chemical vapor deposition varying the gas precursor ratio (vanadium (IV) chloride:water) and the substrate temperature. All samples were characterized by X-ray diffraction, Raman spectroscopy, scanning electron microscopy, cyclic voltammetry, and transmittance measurements. The water flow rate was found to affect the crystallinity and the morphological characteristics of vanadium pentoxide. Dense stacks of long grains of crystalline oxide are formed at the highest amount of water utilized for a substrate temperature of 450 • C. Accordingly, it was indicated that for higher temperatures and a constant gas precursor ratio of 1:7, the surface morphology becomes flattened, and columnar grains of uniform size and shape are indicated, keeping the high crystalline quality of the material. Hence, it was possible to define a frame of operating parameters wherein single-phase vanadium pentoxide may be reliably expected, including a gas precursor ratio of 1:7 with a substrate temperature of >450 • C. The as-grown vanadium pentoxide at 550 • C for a gas precursor ratio of 1:7 presented the best electrochemical performance, including a diffusion coefficient of 9.19 × 10 −11 cm 2 ·s −1 , a charge density of 3.1 mC·cm −2 , and a coloration efficiency of 336 cm 2 ·C −1 . One may then say that this route can be important for the growth of large-scale electrodes with good performance for electrochromic devices.

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“…Thermochromic behavior has been reported for VO 2 2 and vanadium oxides are also considered as materials for solar energy harvesting 3 as well as for electrochromic applications. 4 For the Chemist, vanadium oxides are important for their catalytical applications in many industries. These catalytic properties are based on two aspects: vanadium oxides have a variety of oxidation states, ranging from 2 + to 5 + , and a great variability of oxygen coordination geometries.…”

Section: Introductionmentioning

confidence: 99%

Vanadium Oxide Nanoparticles as Optical Sensors of Cysteine

W¹,

Ag²,

Ab³

et al. 2011

j nanosci nanotechnol

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We report on the synthesis of vanadium oxide nanoparticles using the laser ablation in solution technique. The particles were characterized by dynamic light scattering-DLS, transmission electron microscopy-TEM, X-ray diffraction-XRD, X-ray photoelectron spectroscopy-XPS and UV-Vis optical spectroscopy. The oxide nanoparticles are mainly composed of tetragonal V2O5, a semiconductor with a 2.2 eV band gap. The interaction of the nanoparticles with cysteine, a very important aminoacid present in proteins, was studied. Upon reaction with cysteine, the bandgap of the nanoparticles shifts to the ultraviolet region at 2.87 eV. This color change from yellow to transparent can be used for selective cysteine sensing. Additionally, the intervalence band of the optical absorption spectra shows capability for cysteine sensing in the microM range.

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Reactive sputtering deposition of V2O5−z on flexible PET/ITO substrates for electrochromic devices

Cited by 21 publications

References 27 publications

Plasma Modified V₂O₅/PEDOT Hybrid Based Flexible Electrochromic Devices

Plasma Modified V₂O₅/PEDOT Hybrid Based Flexible Electrochromic Devices

Using an Atmospheric Pressure Chemical Vapor Deposition Process for the Development of V2O5 as an Electrochromic Material

Vanadium Oxide Nanoparticles as Optical Sensors of Cysteine

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Reactive sputtering deposition of V2O5−z on flexible PET/ITO substrates for electrochromic devices

Cited by 21 publications

References 27 publications

Plasma Modified V2O5/PEDOT Hybrid Based Flexible Electrochromic Devices

Plasma Modified V2O5/PEDOT Hybrid Based Flexible Electrochromic Devices

Using an Atmospheric Pressure Chemical Vapor Deposition Process for the Development of V2O5 as an Electrochromic Material

Vanadium Oxide Nanoparticles as Optical Sensors of Cysteine

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Product

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Plasma Modified V₂O₅/PEDOT Hybrid Based Flexible Electrochromic Devices

Plasma Modified V₂O₅/PEDOT Hybrid Based Flexible Electrochromic Devices