A comprehensive study of transparent conductive silver nanowires films with mixed cellulose ester as matrix

Abstract

Silver nanowires (AgNWs) with 200-570 nm in diameter and 20-70 lm in length were successfully synthesized by a polyol process. The transparent conductive and flexible AgNWs films were fabricated with using the mixed cellulose eater (MCE) as matrix by the improved vacuum filtration process. Then, the optical and electrical and mechanical properties of the AgNWs-MCE films were investigated. For the AgNWs-MCE film produced with a deposition density of 152 mg m -2 , the optical transmission at 550 nm is 81.98 % with R s around 312 X sq -1 , whereas at a deposition density of 190 mg m -2 an AgNWs-MCE film with an optical transmission of 79.0 % at 550 nm and R s around 16.6 X sq -1 . There is little overt increase in R s of the AgNWS-MCE film after tape tests for 200 times. The bending test indicated that the change in R s of AgNWs-MCE film is less than 8 % even after 200 cycles of compressive or tensile bending. The excellent mechanical properties of the AgNWs-MCE film can be attributed to the burying of the AgNWs film at the surface of MCEs. Two 0.5 W LED lamps with series fixed on the surface of AgNWs-MCE film with conductive adhesive were lighted, and they were still luminous after bent.

Silver Nanowire Ink for Flexible Circuit on Textiles

“…AgNWs were prepared by polyol solvothermal method [16,23]. Both HNO 3 (8.7 mL) and aniline (5.8 mL) were dissolved in deionized water (200 mL), and ammonium persulfate (14.26 g) was dissolved in deionized water (50 mL).…”

“…The conductive ink is coated onto flexible substrates, such as fabric, paper, polyethylene terephthalate (PET), and polyimide (PI), by silkscreen printing, inkjet printing, spraying, vacuum extraction, and the filtration transfer method to make flexible, conductive pathways or transparent conductive films, which are then applied to wearable electronic products [15,16,17,18,19]. The main factors affecting the electrical properties of conductive inks are the shape and size of the nanoparticles, the solid content, the printing process, the sintering process, and the pretreatment of the substrate surface [15,16,17,18,19,20,21]. In our group, we prepared conductive inks with silver nanowires as the conductive phase and investigated the effects of the mass fraction of silver nanoparticles and the sintering process on the microstructure and electrical properties of samples [22].…”

Silver Nanowires from Sonication-Induced Scission

“…Under the action of acoustic cavitation, small bubbles undergo three stages of nucleation, growth and explosion. When a bubble nucleates in a liquid, there are two cases: when the intensity of the sound wave is lower than a certain critical value, the bubble cores will dissolve; when the ultrasonic intensity is sufficient, the bubble grows by means of joint or rectification diffusion to reach a critical resonance [26,27,28,29,30,31,32,33,34,35,36,37]. After reaching the critical resonance size (Blake threshold), it becomes unstable, and then grows explosively.…”

Flexible Transparent Conductive Film Based on Random Networks of Silver Nanowires

“…Our initial work was the fabrication of flexible transparent AgNWs conductive film with the mixed cellulose eater (MCE) as a substrate; we obtained a good conductive structure on the MCE film using the improved vacuum-filtrating method [ 28 ]. In this work, we further transfer AgNWs on the surface of MCE to polyethylene terephthalate (PET) after dissolving the MCE.…”