Flexible transparent electrode


The new approach is to made the electrode composed of Ag NW composites sintered with metal oxide nanoparticles, removes the insulating ligand around Ag NWs, form a smooth surface of metal oxide film and sinter between Ag NWs and metal oxide nanoparticles

  • Flexible transparent electrode
Technical name of innovation
Flexible Transparent Electrodes of Silver Nanowires Sintered with Metal Oxide Nanoparticles
Commercialisation opportunities
Problem addressed

Iridium-doped tin oxide (ITO) has been widely used in most transparent electrodes but it is costly and mechanically brittle. Silver Nanowires (Ag NW) is a potential candidate to replace the ITO electrode, but the weak adhesion force is weak and may be detached easily under mechanical operations

  • Insulating ligand around Ag NWs is removed, improving electrical conductivity
  • A pinhole-free surface of metal oxide film can be formed
  • Ag Nws and metal oxide nanoparticles are sintered via a strong coordinate bond
Key impact
  • High transparency Achieving ~90% tranparency in visible region of the spectrum
  • Smooth surface A surface of roughness as low as ~10 nm RMS can be formed
  • Robust to mechanical stress Due to the strong bond formed, the durability is highly increased
  • Solar Cell Panels
  • Touchscreen
  • OLED Display


  • PCT Application No. PCT/IB2019/057684
  • EP Application No. 19945149.3
The University of Hong Kong (HKU)

Founded in 1911, The University of Hong Kong (HKU) is the first and oldest institution of higher education in Hong Kong. For over a century, the University has dedicated itself to creating knowledge, providing education, and serving society. Today, HKU has an established worldwide reputation for being a research-led comprehensive University with ten Faculties and a strong commitment to intellectual freedom, liberty and diversity. HKU has a proud record of academic recognition in researches through honours and awards received from both local and international bodies.