Fig. 3: Characterizations of QD-LEDs.
From: Hole migration enables efficient and ultra-bright green quantum dot LEDs
a Schematic structure and cross-sectional TEM image of the QD-LED (scale bar is 100 nm). b Current density (J)-voltage (V) curves of electron-only-device (EOD) and hole-only-device (HOD). c Average electron population per QD (<Ne>) as a function of bias. d Current density-voltage-luminance (L) curves. e External quantum efficiency (EQE)-luminance curves. f Statistical box diagrams of EQE, error bars represent the standard deviation of over 30 independent samples.
