Patterning for Solution-Processed Electrodes and Semiconducting Films

Technology #15615

Questions about this technology? Ask a Technology Manager

Download Printable PDF

Categories
Researchers
Franky Fat Kei So
Szuheng Ho
Shuyi Liu
Managed By
Richard Croley
Assistant Director 352-392-8929
Patent Protection
PCT Patent Application WO 2017/112932

Employs Surface Energy Control to Create Precise Patterns in Solution-Processed Electrodes and Semiconductor Films

This solution processing allows for precise and fine patterning of electrodes and semiconducting films that are inexpensive to produce and can be used in high performance optoelectronic devices. This patterning and transferring process could benefit devices using organic light emitting diodes (OLED) and light emitting diodes (LED). OLEDs and LEDs are used in smart phones, televisions, tablet displays and wearable electronics. With growing demands for flexible and cheaper consumer electronics, the market for OLED manufacturing is expected to reach $20 billion by 2020. Available solution processes to form transparent conducting electrodes, such as vapor deposition and ion sputtering, are commonly used to power displays in complex integrated circuits. However, these processes require excessive energy and expensive materials to produce, proving costly to manufacturers and consumers alike. Researchers at the University of Florida have developed a low-cost and efficient selective patterning and transferring process for electrodes and semiconducting films. These processes achieve patterned, flexible, and heat tolerant complex electrode or semiconducting film products.

Applications

Selective patterning for solution-processed semiconducting films and electrodes

Advantages

  • Produces a solution-processed film on a variety of substrates, allowing for use even on substrates that cannot withstand high temperatures
  • Creates precise and complex patterns on surface, outperforming available options

Technology

This solution processing employs inverted deposition engineering to selectively transfer a solution-processed pattern to the surface of a substrate layer in focus. Inverted deposition engineering involves the control of a semiconductor’s surface hydrophobicity and uses varying levels of aqueous attraction to create material layers upon the substrate. These material layers may comprise desired compounds such as silver nanowires or carbon nanotubes, which are heavily used in OLEDS/LEDs. The combined technology of surface energy manipulation and wet processed solutions make this transfer process efficient and effective; results show that LED devices composed of silver nanowire electrodes composed in this manner show a 40 percent increase in efficiency.