Few-layer-graphene as intercalating agent for spray-pyrolysed fluorine-doped tin oxide transparent conducting electrode
| Autor: | Erwin P. Enriquez, Liew Chien Go, Lea Cristina Macaraig |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Graphene chemistry.chemical_element Ammonium fluoride 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Tin oxide 01 natural sciences Exfoliation joint 0104 chemical sciences law.invention chemistry.chemical_compound chemistry Chemical engineering Mechanics of Materials law Electrode General Materials Science Graphite 0210 nano-technology Tin Sheet resistance |
| Zdroj: | Bulletin of Materials Science. 43 |
| ISSN: | 0973-7669 0250-4707 |
| DOI: | 10.1007/s12034-019-2023-x |
| Popis: | In this work, the development of a robust method for the fabrication of a low-cost transparent conducting electrode (TCE) via the addition of graphene in the spray-pyrolysis of fluorine-doped tin oxide (FTO) is explained. Alcoholic suspensions of few-layer-graphene were produced via the liquid exfoliation of graphite in different alcoholic solutions as sonicating solvent. These mixtures were then mixed with ammonium fluoride and tin (II) chloride dihydrate precursors to fabricate graphene/FTO composite through spray pyrolysis. Graphene exfoliated with 50% aqueous ethanol proved to yield improved TCE properties with nearly two-fold enhancement in figure of merit (FOM) measured in terms of the ratio of optical transmittance and sheet resistance. Using optimized spraying conditions, graphene/FTO coatings still yielded slightly higher FOM compared to plain FTO. The increase in FOM is largely attributed to the decrease in sheet resistance with the incorporation of graphene flakes. |
| Databáze: | OpenAIRE |
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