UT Dots, Inc.
Conductive Nanoinks

Nanoparticles

The Quantum Size Effect

 

Particles with small dimensions between 1 to 100 nanometers have generated great scientific and commercial interest due to their small sizes. For particle sizes below approximately 10 nm, the following properties are observed:

   •   A decrease in the material’s melting point
   •   A change in the wavelengths of the light absorbed and/
         or emitted by the particle

 


Advantages:

 

  • Less amount of raw materials
    • Quantum dots usually absorb light more strongly than bulk material. Therefore, the amount of material needed to make efficient solar cells or LEDs is much less than for traditional bulk materials

 

  • Lower Costs
    • Solar cells, LEDs, and displays can be made thinner, on flexible substrates and thus produced at a much lower cost

 

  • Better Quality of Products
    • QD emissions are usually much narrower and more symmetric (clearer color) than typical emissions from dyes or fluorophors, so displays and LEDs can produce much clearer colors. Silver nanoparticles sinter at low temperatures and can be used for printable electronics

 

Silver and Gold Nanoparticles 
 

 

Latest Trends:

 

The silicon era which started almost sixty years ago has a new competitor in applications where silicon is too expensive, fragile, and slow to market.  For these applications a new disruptive technology is emerging in the form of printable electronics and electronic components using metallic inks.  This ability to use inks and conventional printing techniques will have a revolutionary impact on human life by printing circuits on flexible substrates and making every print unique by using digital printing techniques.  It can also be used to print transistors, displays, interconnects, sensors and even sound actuators.

 

Applications:

 

Printed circuit technology will be used in creating flat panel displays for TVs, printable electronic backplanes for TFT (Thin-Film Transistors), flexible circuits for OLED displays, and RFID (Radio- Frequency Identification) antennas. It will be used for short run electronics, disposable devices (smart cards, disposable displays, E-books), and electronic components (antennas, sensors etc.).

 

Advantages:

 

  • Lower cost of printing
    • The equipment used to print metallic inks is much less expensive, cumbersome, and hazardous compared to the conventional chemical etching process

 

  • Smaller amount of material used
    • Lines for printed circuits will be thinner (0.1 - 2.0 microns compared to ~10 microns in traditional techniques) and narrower (10 - 50 microns). This will significantly save on material for printed circuits

 

The printed electronic industry requires inks. UT Dots’ continuous process will produce high quality, inexpensive, low temperature sintering nanosilver inks in large quantities. This will open doors for the large scale production of printable electronics in a cost effective process. Our silver nanoink passed the 90o adhesive test, showed high conductivity (~ 50% of bulk silver) after sintering at 180 oC (glass) and 100 oC (polymer). No staining effect was observed and the quality of printed lines (from 10 to 250 micron width) was excellent.

 


High Quality Nanoparticles for the Growing Nanotechnology Industry

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