Cambrios Technologies Corp. and Novaled have announced they have sucessfully made a metal-grid free large area 100 cm2 (10 cm by 10 cm) OLED lighting panel using Cambrios ClearOhmtm transparent electrodes. This "breakthrough" development is the result of a collaboration by Cambrios and Novaled to demonstrate the functionality of a high performance large area OLED panel enabled by Cambrios’ silver nanowire material.
Cambrios has already demonstrated a 5 cm by 5 cm OLED lighting panel with efficiencies greater than 40 lm/W, based on ClearOhm electrodes.
According to Cambrios OLEDs made using ClearOhm electrodes exhibit:
- improved angle dependence of color
- providing higher quality OLED displays and lighting products
Commercially available OLED lighting panels currently utilise ITO (indium tin oxide) transparent electrodes. However, due to the limited conductivity of ITO (20 ohms/sq on glass and 50-100 ohms/sq on flexible plastic film), the voltage drops considerably over lengths larger than 2 centimeters, requiring the application of metal grids on top of the ITO to prevent any gradients in light emission caused by the voltage drop. Cambrios ClearOhm coatings can have a resistance as low as 5 ohms/sq with greater than 90 percent transmission independent on the carrier substrate, enabling large 100 cm2 panels with uniform light emission. In addition the ClearOhmtm electrodes offer significant potential for cost reductions in comparison to ITO and are ideally suited for all sorts of flexible device applications.
Source: Cambrios
Dr. Rahul Gupta, Senior Director of Business Development at Cambriosm said, "Partnering with Novaled to create a large OLED lighting tile symbolizes Cambrios’ commitment to help drive the manufacturability of the emerging OLED industries." Rahul, added, "The partnership underscores the continued expansion of our supply chain of strategic relationships in the OLED and OPV industries in addition to our existing strong ecosystem of IC suppliers, sensor makers and film suppliers that serve the large area touch market."
Dr. Sven Murano, Novaled’s VP of Product Management, said, "We chose to partner with Cambrios because of their coating materials excellent performance. Novaled’s materials and technology in combination with Cambrios` ClearOhm coating materials as a transparent electrode led to high performance hybrid OLEDs." Sven added, "With this approach manufacturers can produce high-performance, long lifetime OLED lighting tiles in high volumes at affordable costs."
