Simple and scalable growth of AgCl nanorods by plasma-assisted strain relaxation on flexible polymer substrates

Jae Yong Park, Illhwan Lee, Juyoung Ham, Seungo Gim and Jong-Lam Lee ()
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Jae Yong Park: Pohang University of Science and Technology (POSTECH)
Illhwan Lee: Pohang University of Science and Technology (POSTECH)
Juyoung Ham: Pohang University of Science and Technology (POSTECH)
Seungo Gim: Pohang University of Science and Technology (POSTECH)
Jong-Lam Lee: Pohang University of Science and Technology (POSTECH)

Nature Communications, 2017, vol. 8, issue 1, 1-11

Abstract: Abstract Implementing nanostructures on plastic film is indispensable for highly efficient flexible optoelectronic devices. However, due to the thermal and chemical fragility of plastic, nanostructuring approaches are limited to indirect transfer with low throughput. Here, we fabricate single-crystal AgCl nanorods by using a Cl2 plasma on Ag-coated polyimide. Cl radicals react with Ag to form AgCl nanorods. The AgCl is subjected to compressive strain at its interface with the Ag film because of the larger lattice constant of AgCl compared to Ag. To minimize strain energy, the AgCl nanorods grow in the [200] direction. The epitaxial relationship between AgCl (200) and Ag (111) induces a strain, which leads to a strain gradient at the periphery of AgCl nanorods. The gradient causes a strain-induced diffusion of Ag atoms to accelerate the nanorod growth. Nanorods grown for 45 s exhibit superior haze up to 100% and luminance of optical device increased by up to 33%.

Date: 2017
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DOI: 10.1038/ncomms15650

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