A highly crystalline single Au wire network as a high temperature transparent heater

A transparent conductor which can generate high temperatures finds important applications in optoelectronics. In this article, a wire network made of Au on quartz is shown to serve as an effective high temperature transparent heater. The heater has been fabricated by depositing Au onto a cracked sac...

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Bibliographic Details
Published in:Nanoscale 2014-06, Vol.6 (11), p.5645-5651
Main Authors: Rao, K D M, Kulkarni, Giridhar U
Format: Article
Language:English
Subjects:
Crystallinity
Deposition
Electrical resistivity
Heaters
Heating equipment
Networks
Spectra
Transmittance
Wire
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Summary:A transparent conductor which can generate high temperatures finds important applications in optoelectronics. In this article, a wire network made of Au on quartz is shown to serve as an effective high temperature transparent heater. The heater has been fabricated by depositing Au onto a cracked sacrificial template. The highly interconnected Au wire network thus formed exhibited a transmittance of ∼87% in a wide spectral range with a sheet resistance of 5.4 Ω □(-1). By passing current through the network, it could be joule heated to ∼600 °C within a few seconds. The extraordinary thermal performance and stability owe much to the seamless junctions present in the wire network. Furthermore, the wire network gets self-annealed through joule heating as seen from its increased crystallinity. Interestingly, both transmittance and sheet resistance improved following annealing to 92% and 3.2 Ω □(-1), respectively.
ISSN:2040-3364
2040-3372
DOI:10.1039/c4nr00869c