Journal
MATERIALS RESEARCH EXPRESS
Volume 1, Issue 2, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/2053-1591/1/2/026301
Keywords
colloidal TiO2; crackle layer; metal network; transparent conductor; flexible electronics
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Funding
- Department of Science and Technology, Government of India
- DST-INSPIRE
- UGC
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A metal (Au) wire network, nearly invisible to the naked eye, has been realized on common substrates such as glass, to serve as a transparent conducting electrode (TCE). The process involves coating a TiO2 nanoparticle dispersion to a film thickness of similar to 10 mu m, which following solvent evaporation, spontaneously forms a crackle network; the film is then used as a sacrificial template for metal deposition. The TCE thus formed exhibited visible transmittance of similar to 82% and sheet resistance of 3-6 Omega/square for a metal fill factor of 7.5%. With polyethylene terephthalate substrate, flexible and robust TCE could be produced and with quartz, the spectral range could be widened to cover UV and IR regions.
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