Supplement Number 1-7

See supplementary material for EL spectrum of blue QLED, fitting discrepancies of (C-Cg)-ω characteristic of original and fitting data, C-V characteristic of blue QLED at 10 kHz, denser C-V and C-f curves of blue QLED. Nyquist plots of control device and shelf aged device, J-V and C-V characteristic of blue QLEDs with NiOx or NiOx/SAM HIL.