Abstract:
Due to wide printing applications in microelectronic devices as well as for drug discovery
purpose in pharmaceutical industries and development of DNA microarrays in
biotechnology, patterning is a fundamental need of many printing operations specially in
micro or nano scale range. There are several printing techniques like Piezoelectric inkjet
printing system and thermal inkjet printing system which are time taken and very costly.
The loss of costly material which is used in these techniques are very high. To overcome
this problem, electrospray inkjet printing technique introduced in which printing at high
resolution and low cost. In this study, silver nanowires were synthesized through polyol
method. NaCl has been as ink precursor. PVP has been used as protective and reducing
agent. FTIR results confirm that Ethylene glycol and PVP removed in silver nanowires.
UV visible spectroscopy, XRD and SEM conforms the presence of silver nanowires.
Parametric study of electrospray was done. Analyzed effect of droplet diameter, effect of
nozzle, effect of flowrate, effect of nozzle to substrate distance and effect of substrates by
applied voltage. Dry spray was come at low flowrate, medium distance and minimum
nozzle ID. Electrospray was used for the deposition of PEDOT:PSS film as well as to
deposit silver nanowires (AgNWs) embedded PEDOT:PSS nanocomposite thin films on
a glass substrate. Surface morphology of deposited films were analyzed by SEM, and
conductivity of deposited film was analyzed by IV measurement. Conductivity of
PEDOT:PSS was improved by making composite of AgNO3/PEDOT:PSS.
