Ultrasonic spray coating of gold nanoparticles: A comprehensive study on the surface coverage and position of Au-NPs in the hole injection layer of OLEDs for an optimized luminous efficacy

2021 ◽  
Author(s):  
Rachith S. N. Kumar ◽  
Maarten Eerdekens ◽  
Naveen Reddy ◽  
Thierry Verbiest ◽  
Wim Deferme
Keyword(s):  
Gold Nanoparticles ◽  
Surface Coverage ◽  
Spray Coating ◽  
Hole Injection ◽  
Au Nps ◽  
Luminous Efficacy ◽  
Hole Injection Layer ◽  
Ultrasonic Spray ◽  
Comprehensive Study

Improved hole injection in organic light emitting devices by gold nanoparticles

RSC Advances ◽  
2015 ◽  
Vol 5 (1) ◽  
pp. 684-689 ◽  
Author(s):  
P. Justin Jesuraj ◽  
K. Jeganathan
Keyword(s):  
Gold Nanoparticles ◽  
Surface Coverage ◽  
Hole Injection ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Organic Light ◽  
Organic Light Emitting Devices

AuNPs at various surface coverage.

Anode Buffer for Organic Devices Composed of Gold Nanoparticles Prepared by Ark Plasma Deposition

2014 ◽  
Vol 896 ◽  
pp. 451-454
Author(s):  
Dan Wang ◽  
Noriaki Yukitake ◽  
Katsuhiko Fujita
Keyword(s):  
Gold Nanoparticles ◽  
Indium Tin Oxide ◽  
Plasma Deposition ◽  
Bulk Heterojunction ◽  
Hole Injection ◽  
Au Nps ◽  
Plasma Gun ◽  
Ito Electrode ◽  
Buffer Material ◽  
Branched Polystyrene

Gold nanoparticles (Au NPs) with mean size of 1 nm were placed on an indium tin oxide (ITO) electrode by ark plasma gun. The hole injection at ITO/organic semiconductor was significantly enhanced by the NPs. Though the hole current was unstable upon the voltage scan, it can be substantially stabilized by the insertion of hyper-branched polystyrene (HPS) thin layer between ITO and Au NPs. The work function of ITO electrode was also increased by NPs. The ITO/HPS/Au NPs structure was applied to the anode of an organic solar cell (OSC) with a bulk heterojunction active layer. The power conversion efficiency was significantly higher than that of OSC without anode buffer layer and almost comparable to that with a representative buffer material.

scholarly journals Highly efficient PeLEDs using gold nanoparticles modified PEDOT:PSS as the hole injection layer

2017 ◽  
Vol 62 (32) ◽  
pp. 3774-3782
Author(s):  
ZiYang XIONG ◽  
XiaoYan WU ◽  
ChunHong GAO ◽  
ChunYan LIN ◽  
ZuHong XIONG ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Hole Injection ◽  
Hole Injection Layer ◽  
Highly Efficient

High Performance CO Sensors Utilizing Sprayed Distributed Toluene-Based Gold Nanoparticles

2013 ◽  
Vol 479-480 ◽  
pp. 702-707
Author(s):  
Chun Yi Wang ◽  
Ho Cheng Lee ◽  
Yung Chen Wu ◽  
Che Hsin Lin
Keyword(s):  
Gold Nanoparticles ◽  
Gas Sensors ◽  
High Performance ◽  
Room Temperature ◽  
Low Cost ◽  
Spray Coating ◽  
Repeated Measurements ◽  
Au Nps ◽  
Working Temperature ◽  
Co Gas

This study presents a simple and low-cost spray coating process for producing high performance CO (carbon monoxide) sensors utilizing toluene-based gold nanoparticles (Au-NPs). Thanks to the success synthesis of Au-NPs in toluene, this low surface tension organic solvent prevents Au-NPs from colligation. And therefore Au-NPs can be well dispersed on the surface of the electrodes as the sensing layer during spraying. To compare with the typical metal oxide based CO sensors that have to work at a higher working temperature of about 150~350°C, the produced sensor can work at room temperature and have a better detection limit for CO gas (5 ppm). Experimental results indicate good linear sensitivity under repeated measurements for concentration range from 5 250 ppm (R2=0.996). The repeatability is also confirmed by measuring 100 ppm CO gas, the calculated variation is less than 2.8% for six repeating measurements. The process developed in this study can be used to produce not only high performance CO gas sensors but other related gas sensors.

scholarly journals Easy and fast in-situ functionalization of exfoliated 2D black phosphorus with gold nanoparticles

2021 ◽  
Author(s):  
Salvatore Moschetto ◽  
Andrea Ienco ◽  
Gabriele Manca ◽  
Manuel Serrano-Ruiz ◽  
Maurizio Peruzzini ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Black Phosphorus ◽  
Au Nps ◽  
In Situ Functionalization

Heterostructures of single- and few-layer black phosphorus (2D bP) functionalized with gold nanoparticles (Au NPs) have been recently reported in the literature, exploiting their intriguing properties and biocompatibility for catalytic,...

scholarly journals Continuous citrate‐capped gold nanoparticle synthesis in a two‐phase flow reactor

2021 ◽  
Author(s):  
Spyridon Damilos ◽  
Ioannis Alissandratos ◽  
Luca Panariello ◽  
Anand N. P. Radhakrishnan ◽  
Enhong Cao ◽  
...  
Keyword(s):  
Particle Size ◽  
Gold Nanoparticles ◽  
Residence Time ◽  
Flow Reactor ◽  
Phase Flow ◽  
Continuous Manufacturing ◽  
Two Phase ◽  
Process Yield ◽  
Au Nps ◽  
Manufacturing Platform

AbstractA continuous manufacturing platform was developed for the synthesis of aqueous colloidal 10–20 nm gold nanoparticles (Au NPs) in a flow reactor using chloroauric acid, sodium citrate and citric acid at 95 oC and 2.3 bar(a) pressure. The use of a two-phase flow system – using heptane as the continuous phase – prevented fouling on the reactor walls, while improving the residence time distribution. Continuous syntheses for up to 2 h demonstrated its potential application for continuous manufacturing, while live quality control was established using online UV-Vis photospectrometry that monitored the particle size and process yield. The synthesis was stable and reproducible over time for gold precursor concentration above 0.23 mM (after mixing), resulting in average particle size between 12 and 15 nm. A hydrophobic membrane separator provided successful separation of the aqueous and organic phases and collection of colloidal Au NPs in flow. Process yield increased at higher inlet flow rates (from 70 % to almost 100 %), due to lower residence time of the colloidal solution in the separator resulting in less fouling in the PTFE membrane. This study addresses the challenges for the translation of the synthesis from batch to flow and provides tools for the development of a continuous manufacturing platform for gold nanoparticles.Graphical abstract

Macroscopical monolayer films of ordered arrays of gold nanoparticles as SERS substrates for in-situ quantitative detection in aqueous solutions

Nanoscale ◽  
2021 ◽  
Author(s):  
Lixiang Xing ◽  
Cui Wang ◽  
Yi Cao ◽  
Jihui Zhang ◽  
Haibing Xia
Keyword(s):  
Gold Nanoparticles ◽  
Volume Fraction ◽  
Water Volume ◽  
Quantitative Detection ◽  
Monolayer Films ◽  
Au Nps ◽  
Sers Substrates ◽  
Ordered Arrays ◽  
Water Volume Fraction

In this work, macroscopical monolayer films of ordered arrays of gold nanoparticles (MMF-OA-Au NPs) are successfully prepared at the interfaces of toluene-diethylene glycol (DEG) with a water volume fraction of...

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