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Open Access Nano Express

Spray-coated nanoscale conductive patterns based on in situ sintered silver nanoparticle inks

Yifan Zheng, Shuguang Li, Wei Shi and Junsheng Yu*

Author Affiliations

State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Information, University of Electronic Science and Technology of China (UESTC), Chengdu 610054, People's Republic of China

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Nanoscale Research Letters 2014, 9:145  doi:10.1186/1556-276X-9-145

Published: 25 March 2014

Abstract

Nanoscale patterns with high conductivity based on silver nanoparticle inks were fabricated using spray coating method. Through optimizing the solution content and spray operation, accurate nanoscale patterns consisting of silver nanoparticles with a square resistance lower than 1 Ω /cm2 were obtained. By incorporating in situ sintering to substitute the general post sintering process, the time consumption could be significantly reduced to one sixth, qualifying it for large-scale and cost-effective fabrication of printed electronics. To testify the application of spray-coated silver nanoparticle inks, an inverted polymer solar cell was also fabricated, which exhibited a power conversion efficiency of 2.76%.

Keywords:
Spray coating; Conductive pattern; Silver nanoparticle ink; Inverted polymer solar cell; In situ sintering process