Electrochromic Properties of Niobium Oxide Thin Films Fabricated byRF Sputtering
Source abstract
Abstract
Electrochromic Nb2O5 films were prepared successfully by RF sputtering process. These films are transparent in bleached state and brownish gray in colored state. Cyclic voltam-metry (CV) measurement results show that the film has good stability, high reversibility of Li+ insertion/extraction. The coloration efficiency is 16.68cm2/C at 550nm. The difference of trans-mittance between bleached and colered states is 20%-30% in visible range. XPS results show that the electrochromic properties of the Nb205 film can be attributed to the reversible redox reaction between NbⅤ and NbⅣ with the double injection/extraction of Li+ and e-, which can be described as:
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Research context
OpenAlex topics: Transition Metal Oxide Nanomaterials · Analytical Chemistry and Sensors · Gas Sensing Nanomaterials and Sensors
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