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Kondalkar VV, Mali SS, Kharade RR, et al. High performing smart electrochromic device based on honeycomb nanostructured h-WO3 thin films: hydrothermal assisted synthesis. Dalton Trans. 2015;44(6):2788-800doi: 10.1039/c4dt02953d.
Kondalkar, V. V., Mali, S. S., Kharade, R. R., Khot, K. V., Patil, P. B., Mane, R. M., Choudhury, S., Patil, P. S., Hong, C. K., Kim, J. H., & Bhosale, P. N. (2015). High performing smart electrochromic device based on honeycomb nanostructured h-WO3 thin films: hydrothermal assisted synthesis. Dalton transactions (Cambridge, England : 2003), 44(6), 2788-800. https://doi.org/10.1039/c4dt02953d
Kondalkar, Vijay V, et al. "High performing smart electrochromic device based on honeycomb nanostructured h-WO3 thin films: hydrothermal assisted synthesis." Dalton transactions (Cambridge, England : 2003) vol. 44,6 (2015): 2788-800. doi: https://doi.org/10.1039/c4dt02953d
Kondalkar VV, Mali SS, Kharade RR, Khot KV, Patil PB, Mane RM, Choudhury S, Patil PS, Hong CK, Kim JH, Bhosale PN. High performing smart electrochromic device based on honeycomb nanostructured h-WO3 thin films: hydrothermal assisted synthesis. Dalton Trans. 2015 Feb 14;44(6):2788-800. doi: 10.1039/c4dt02953d. PMID: 25500946.
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Dalton Trans. 2015 Feb 14;44(6):2788-800. doi: 10.1039/c4dt02953d.

High performing smart electrochromic device based on honeycomb nanostructured h-WO3 thin films: hydrothermal assisted synthesis.

Dalton transactions (Cambridge, England : 2003)

Vijay V Kondalkar, Sawanta S Mali, Rohini R Kharade, Kishorkumar V Khot, Pallavi B Patil, Rahul M Mane, Sipra Choudhury, Pramod S Patil, Chang K Hong, Jin H Kim, Popatrao N Bhosale

Affiliations

  1. Materials Research Laboratory, Department of Chemistry, Shivaji University, Kolhapur, 416004, MS, India. [email protected].

PMID: 25500946 DOI: 10.1039/c4dt02953d

Abstract

Herein, we report honeycomb nanostructured single crystalline hexagonal WO(3) (h-WO(3)) thin films in order to improve electrochromic performance. In the present investigation, honeycomb nanostructured WO(3) with different unit size and nanowire array with highly nanocrystalline frameworks have been synthesized via a hydrothermal technique. The influence of hydrothermal reaction time on the honeycomb unit cells, crystallite size, lithium ion diffusion coefficient and switching time for coloration/bleaching were studied systematically. The electrochromic study reveals that the honeycomb unit cell size has a significant impact on the electrochromic performance. Small unit cells in the honeycomb lead to large optical modulation and fast switching response. A large optical modulation in the visible spectral region (60.74% at λ = 630 nm) at a potential of -1.2 V with fast switching time (4.29 s for coloration and 3.38 s for bleaching) and high coloration efficiency (87.23 cm(2) C(-1)) is observed in the honeycomb WO(3) thin films with a unit cell diameter of 1.7 μm. The variation in color on reduction of WO(3) with applied potential has been plotted on an xy-chromaticity diagram and the color space coordinate shows the transition from a colorless to deep blue state.

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