P‐12.5: Microcavity Bottom‐Emitting Blue ZnSeTe Quantum Dot Light‐Emitting Diodes Based on ITO/Ag/ITO Electrode

In this report, ZnSeTe‐based blue bottom‐emitting quantum dot light‐emitting diodes (QLEDs) with optical microcavity design were demonstrated. The microcavity is formed by the top reflective Ag electrode and the bottom semi‐transparent multilayer electrode, ITO/Ag/ITO. The conventional normal QLED device structure is sandwiched between microcavity. The results show the full width at half maximum (FWHM) of the device emission spectrum is reduced to 50% compared to the device without microcavity, and the tail at longer emission wavelengths is notably suppressed.