inkjet printing – Page 2 – TechConnect Briefs

A Study of Molten Lead-Free Solder Deposited by Inkjet Printing for Interconnections of Thin-Film Solar Cell Modules

Chen W-M, Wang C-H, Hwang W-S, National Cheng Kung University, TW

Solar cell modules generally are bonded with photovoltaic ribbon using silver paste to increase photovoltaic conversion efficiency. However, the joint strength of silver paste between the aluminum back electrode and the ribbon may be the [...]

Effects of Inkjet Printing Parameters on Conductive Line Patterns for Flexible Electronics Applications

Tsai H.L., Hwang W-S, Liu Y-F, Wu J.-T., Hsu S.L.-C., National Cheng Kung University, TW

Aqueous silver nitrate ink (5 moles/liter) mixed with poly(N-vinyl-2-pyrrolidone) (PVP) was employed in a piezoelectric inkjet printing apparatus to construct conductive patterns on ultraviolet/O3-treated polyimide substrates. At a pulse amplitude of ±38 V, single droplets [...]

Impact of Ink Synthesis on Processing and Properties of Inkjet-Printed Silicon Thin Films

Drahi E., Gupta A., Blayac S., Lombez L., Jubault M., Benaben P., Ecole Nationale Supérieure des Mines de Saint Etienne, FR

Inkjet printing has a high potential for cost reduction in solar cell and thermoelectric industry. This study demonstrates that silicon thin films can be produced by inkjet-printing of a silicon ink followed by consequent drying [...]

Inkjet printing of 200 nm monodisperse carbon nanoparticles: from smart ink formulation to thin film sensor properties

Vié R., Berthon-Fabry S., Blayac S., Drahi E., Jacomet S., EMSE, FR

In this work, resorcinol / formaldehyde copolymers are pyrolyzed in order to obtain spherical monodisperse carbon nanoparticles. These particles are used to create thin films using inkjet deposition. Electrical properties of these films are, then, [...]

Effect of Pressure Variation on Inkjet-Printed Line Pattern with Various Step Sizes of Ejected Droplets

Wang J-K, Hwang W-S, Tsai M-H, Liu Y-F, National Cheng Kung University, TW

This study investigates the effect of droplet deposition dynamics on inkjet-printed line features of deionized water using numerical analysis. Simulation results show that kinetic energy dissipation during the droplet deposition process transforms into inner wave [...]

Separation and ink formulation of high purity semiconducting single-walled carbon nanotubes with polymers for printed thin film transistors

Qian L., Zhao J.W., Cui Z., Suzhou Institute of Nano-tech and Nano-bionics, CN

In this work, a new approach to sorting SWCNTs based on regioregular poly(3-dodecylthiophene) (rr-P3DDT) has been reported. Effective separation of semiconducting-SWCNTs has been demonstrated by tuning the types of solvent, temperature and centrifugation rate. Figure [...]

Rheological Optimization and Stability Study of Silver Nano-Ink for InkJet Printing of Solar Electrodes Using Industrial Printhead

Shankar R., Amert A., Kellar J.J., Whites K.W., South Dakota School of Mines and Technology, US

we have produced silver nanoparticles using the polyol synthesis and have tailored the ink formulation by choosing a solvent mixture to meet the rheological requirement of industrial printhead (XAAR 1001FF). A solvent mixture which can [...]

Improvement of Silicon Solar Cell Metallization with Printed Metal Nanoparticle Inks

Xu B., Limb S., Rodkin A., Shrader E., Garner S., PARC, a Xerox company, US

The process and quality of metallization greatly affects the performance and cost of solar cells. Screen printing of silver paste and fire-through of the silicon nitride antireflection layer is the most widely used method for [...]