Figure 8

(a) J-V curve, the inset shows the EL spectrum, (b) Luminance of the WLED device, (c) EQE of WLED device and (d), EL spectra with different applied V.

(a) J-V curve, the inset shows the EL spectrum, (b) Luminance of the WLED device, (c) EQE of WLED device and (d), EL spectra with different applied V.