Enhanced electrical conductivity of PEDOT-encapsulated silver nanowire film pretreated with surfactants
- PDF / 4,196,420 Bytes
- 7 Pages / 595.276 x 790.866 pts Page_size
- 9 Downloads / 148 Views
ORIGINAL CONTRIBUTION
Enhanced electrical conductivity of PEDOT-encapsulated silver nanowire film pretreated with surfactants Li Liu 1 & Jianchun Jiang 1 & Zhan Xu 1 & Jiahang Zhou 1 & Yunbo Li 1 Received: 29 June 2020 / Revised: 29 September 2020 / Accepted: 14 October 2020 # Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract Flexible, transparent and conductive films (TCFs) were prepared with silver nanowires (AgNWs) and the conductivity was enhanced via tuning junction resistance between nanowires treated by different surfactants and encapsulated by poly(3,4ethylenedioxythiophene):polystyrenesulfonate (PEDOT:PSS). The results showed that the conductivity of AgNW TCFs was obviously enhanced after being immersed into surfactant solutions because the AgNWs would approach each other directly after dislocating away from polyvinyl pyrrolidone (PVP) and the junction resistance sharply decreased. Moreover, the transmittance of AgNW TCFs immersed into different surfactant solutions just decreased little because the halogen ions induced the formation of silver nanoparticles on the surface of AgNWs. Besides, the conductivity of AgNW TCFs encapsulated by PEDOT:PSS was also enhanced because the charges can transfer between PEDOT chains and AgNWs with the little decrease of optical transmittance. Keywords Silver nanowires . Transparent film . Conductive film . Surfactant . Sheet resistance . PEDOT:PSS
Introduction Transparent conductive films (TCFs) have been paid intense attention and widely used in organic light-emitting diode, organic solar cells, sensor, and touch screen due to its good conductivity and high transmittance [1–3]. TCFs can be divided into five main kinds of films: metal conductive films [4, 5], oxide conductive films [6, 7], organic polymer films [8, 9], graphene-like conductive films [10, 11], and metal nanowire films [12, 13]. In recent years, flexible and transparent conductive film (FTCF) has become a research hot spot for flexible electronic products. As we all know, although indium tin oxide (ITO) TCF is widely used due to its good conductivity and high transmittance, its applications are limited in flexible area because of the shortcomings of complicated production process, high manufacturing cost, poor bending resistance, and rare raw materials [14]. Silver nanowire (AgNW) TCF has excellent conductivity, visible light transmittance, and flexibility because the conductive network composed of silver nanowires has high specific surface area, and excellent optical and electrical
* Yunbo Li [email protected] 1
School of Materials Science & Engineering, Shanghai University, Shanghai 200444, China
properties. Consequently, AgNWs are well known as the most likely substitute for ITO FTCF materials [15]. However, compared to the ITO TCF, the conductivity and optical transmittance of AgNW TCFs still need to be improved. The conductivity of AgNW TCFs is determined by the junction resistance between silver nanowires and the conductivity of silver nanowire [16]. Many methods have been prop
Data Loading...
