Preparation and characterization of spray deposited n-type WO3 thin films for electrochromic devices
| Autor: | R. Sivakumar, Balasubramanian Subramanian, D. C. Trivedi, M. Jayachandran, C. Sanjeeviraja, A. Moses Ezhil Raj |
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| Rok vydání: | 2004 |
| Předmět: |
Materials science
Mechanical Engineering Inorganic chemistry Doping Analytical chemistry Substrate (electronics) Condensed Matter Physics Electrochromic devices Tin oxide chemistry.chemical_compound chemistry Tungstate Mechanics of Materials Electrochromism Propylene carbonate General Materials Science Thin film |
| Zdroj: | Materials Research Bulletin. 39:1479-1489 |
| ISSN: | 0025-5408 |
| DOI: | 10.1016/j.materresbull.2004.04.023 |
| Popis: | The n-type tungsten oxide (WO{sub 3}) polycrystalline thin films have been prepared at an optimized substrate temperature of 250 deg. C by spray pyrolysis technique. Precursor solution of ammonium tungstate ((NH{sub 4}){sub 2}WO{sub 4}) was sprayed onto the well cleaned, pre-heated fluorine doped tin oxide coated (FTO) and glass substrates with a spray rate of 15 ml/min. The structural, surface morphological and optical properties of the as-deposited WO{sub 3} thin films were studied. Mott-Schottky (M-S) studies of WO{sub 3}/FTO electrodes were conducted in Na{sub 2}SO{sub 4} solution to identify their nature and extract semiconductor parameters. The electrochromic properties of the as-deposited and lithiated WO{sub 3}/FTO thin films were analyzed by employing them as working electrodes in three electrode electrochemical cell using an electrolyte containing LiClO{sub 4} in propylene carbonate (PC) solution. |
| Databáze: | OpenAIRE |
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