60‐1: Invited Paper: The Challenge of Ink Jet Printing Quantum Dots Light Emitting Diodes towards Commercialization

Electroluminescent quantum‐dot light‐emitting diode (QLED) is a promising technology for the next generation display applications. Currently, the efficiency and lifespan of red, green and blue light emitting QLED devices are getting close to the standard for industrialization. However, the device batch consistency and reliability properties, which are critical for commercialization, are lacking of attention. Herein, we investigated the QLED devices and deconvoluted the root cause regarding the device variation in terms of consistency and reliability. Surface passivation and removal of moisture in the zinc oxide electron transporting layer are proved to be the keys towards stabilizing QLEDs.