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Hybrid Physicochemical Synthesis and Electrochromic Performance of WO 3 /MoO 3 Thin Films
Author(s) -
Kharade Rohini R.,
Mali S. S.,
Mohite S. S.,
Kondalkar V. V.,
Patil P. S.,
Bhosale P. N.
Publication year - 2014
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.201400239
Subject(s) - electrochromism , chromaticity , materials science , electrochromic devices , tin oxide , thin film , molybdenum , evaporation , electrolyte , doping , inorganic chemistry , chemical engineering , analytical chemistry (journal) , electrode , optoelectronics , nanotechnology , optics , chemistry , organic chemistry , physics , engineering , metallurgy , thermodynamics
Molybdenum oxide (MoO 3 ) mixed tungsten oxide (WO 3 ) thin films have been prepared by hybrid physico‐chemical synthesis involving microwave assisted sol‐gel synthesis (MW‐SGS) of WO 3 followed by vacuum evaporation of MoO 3 on fluorine doped tin oxide (FTO) coated glass substrates. The optostructural and morphological properties of WO 3 thin films with different thickness of MoO 3 layer were investigated and studied for enhanced electrochromic coloration. The electrochromic performance of these samples was studied in LiClO 4 /PC as electrolyte for Li + insertion/extraction. Colorimetric analysis was done to define the colors in the bleached and colored states in terms of L ab * values and xy chromaticity diagram. Enhancement in electrochromic properties in terms of optical modulation (Δ OD ), coloration efficiency ( CE ) and switching time ( t b and t c ) was studied and reported.