| 초록 |
We describe the manufacture of transparent conductors comprising silver nanowires (AgNWs) on a hydroxylated polydimethylsiloxane (PDMS) covered by polyurethane urea (PUU) that is fully compatible with both materials. In order to enhance the affinity of AgNWs for PUU, we added 2,2-bis(hydroxymethyl)butyric acid to the PUU, in which the carbonyl groups of poly(vinylpyrrolidone) (PVP) at the surface of AgNWs can form hydrogen bonds with the carboxylic acid groups of PUU. Strong hydrogen bonds between the PUU and PDMS facilitated an achievement of water sealable and stretchable transparent electrode. ZnS particles were mixed with the PUU, which was coated onto the AgNWs/PDMS, followed by a lamination with another electrode to achieve an electroluminescence (EL) device. It could be stretched up to 150% without severe decrease in emission density and survived 5000 cycles of 100% stretch-release. High adhesion between the PUU and PDMS enabled the water-proof characteristics of the EL devices. |
