Kinetic spraying of silver nanowire blended graphite powder to fabricate transparent conductive electrode and their application in electrochromic device

2018 ◽  
Vol 456 ◽  
pp. 19-24 ◽  
Author(s):  
Hyungsub Kim ◽  
Yunchan Park ◽  
Dahyun Choi ◽  
Won Shik Chu ◽  
Sung-Hoon Ahn ◽  
...  
2018 ◽  
Vol 926 ◽  
pp. 79-84
Author(s):  
Achanai Buasri ◽  
Suparak Ojchariyakul ◽  
Patinya Kaewmanechai ◽  
Waratchaya Eakviriyapichat ◽  
Vorrada Loryuenyong

In this research, we focused on silver (Ag) nanoparticles that exhibit various colors on the basis of their localized surface plasmon resonance (LSPR). The effects of step-voltage parameters on the coloration of the Ag deposition-based electrochromic device were investigated. Further, we report the use of reduced graphene oxide (RGO)/biaxially oriented polypropylene (BOPP) as the transparent conductive electrode. RGO was synthesized directly from graphite under a microwave heating system. BOPP film was coated with RGO by drop-casting method. The samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscope (TEM), energy dispersive spectroscopy (EDS), electrical resistance measurements and cyclic voltammetry (CV). The SEM and TEM images exist as typical wrinkled structure, folded region, transparent, indicating these layers are exfoliated to a very large extent. Our results primarily indicate that the novel BOPP/RGO/Ag/RGO/BOPP configuration presents an easy and expeditious way of preparing the voltage-tunable multicolor electrochromic device. The electrochromic device can be switched from the transparent state to the black state and yellow state.


2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Huiying Li ◽  
Yunfei Liu ◽  
Anyang Su ◽  
Jintao Wang ◽  
Yu Duan

AbstractThanks to its high transparency, high carrier mobility, and thermal conductivity, graphene is often used as transparent conductive electrode (TCE) in optoelectronic devices. However, the low carrier concentration and high resistance caused by vacancy defects, grain boundaries, and superposed folds in typical graphene films limit its application. In this study, we propose a method to increase both the conductivity and carrier concentration in single-layer graphene (SLG) by blending it with silver nanowires (AgNWs). AgNWs provide connections between grain boundaries of graphene to improve charge-carrier transport. The AgNWs in this study can reduce the resistance of SLG from 650 Ω/◻ to 27 Ω/◻ yet still maintain a transmittance of 86.7% (at 550 nm). Flexible organic light-emitting diode, with a maximum 15000 cd m−2 luminance was successfully fabricated using such graphene and AgNWs composite transparent electrodes.


2020 ◽  
Vol 59 (10) ◽  
pp. 3073
Author(s):  
Mohammad Javad Nikzad ◽  
Seyed Mohammad Mahdavi ◽  
Seyed Khatiboleslam Sadrnezhaad

RSC Advances ◽  
2016 ◽  
Vol 6 (69) ◽  
pp. 64428-64433 ◽  
Author(s):  
Youn-Soo Kim ◽  
Eun-Jong Lee ◽  
Jun-Taek Lee ◽  
Do-Kyung Hwang ◽  
Won-Kook Choi ◽  
...  

We have developed the transparent conductive electrode hybrid-gel films based on PEDOT:PSS and thin silver nanowires with diameters of 20 nm. These hybrid-gel films exhibited excellent opto-electrical performance and good mechanical flexibility.


2018 ◽  
Vol 55 ◽  
pp. 82-90
Author(s):  
Feng Duan ◽  
Wei Jia Yang ◽  
Xin He ◽  
Jia Yi Jiang ◽  
Wan Yu Zhu ◽  
...  

In this work, we fabricated a flexible silver nanowires (Ag NWs)/graphene transparent conducting film on polyethylene terephthalate (PET) substrate, which was applied in an electrochromic device. The graphene layer was coated on the surface of the Ag NW film utilizing the electrostatic adsorption in order to improve the stability of the metallic nanowire layer and the performance of the electrochromic device. The Ag NWs/graphene composite film exhibited an optical transmittance of 82.5% at 550 nm and a sheet resistance of 57.5 Ω/sq. With the concentration of the adsorbed graphene increased, the transmittance and conductivity of the composite film both decreased. Furthermore, the lifetime of the electrochromic devices based on the tungsten oxide (WO3) thin film and the Ag NW/graphene composite electrodes was greatly extended, compared to that utilizing the pristine Ag NW electrodes. The results indicate that the introduction of the graphene layer could protect the Ag NW film from corrosion of the electrolyte layer, and greatly improve the lifetime and cycle numbers of the electrochromic device. Key words: silver nanowire; graphene; transparent electrode; electrochromic devices


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