Fig. 5: High-energy exciton electroluminescence from biaxially strained CdSe-CdS core-shell QDs.
From: Strong high-energy exciton electroluminescence from the light holes of polytypic quantum dots
a Absorbance (purple) and photoluminescence spectra (green) of biaxially strained QDs. A ∼ 48 meV splitting between LH and HH is highlighted (grey, dash). b Electroluminescence spectra of CdSe-CdS QD-LEDs under different voltages. The dashed curves represent the Gaussian fitting of photoluminescence peaks from HH excitons (purple) and LH excitons (green). Inset: the proportion of high-energy exciton emission versus voltage.
