FIG. 12A shows J-EQE characteristics of a hybrid LED. The average and the highest EQE data are shown in black and red data points, respectively.
FIG. 12B shows J-V characteristics of a hybrid LED.
FIG. 12C shows current dependent electroluminescence spectrum of a hybrid LED.
FIG. 13A shows a photograph of LEDs grown on a 2.5×2.5 cm2 glass substrate.
FIG. 13B shows a photograph of a device electroluminescence. The diameter of the device is 250 μm.
FIG. 14A and FIG. 14B show photoluminescence of a monolayer WS2 within an electron-only (FIG. 14A) and within a hole-only-device (FIG. 14B) with varied injection current.
FIG. 15A and FIG. 15B are graphs of J-V characteristics of mWS2 in the electron-only (FIG. 15A) and hole-only-device. (FIG. 15B).
FIG. 16A shows photoluminescence of mWS2 in the electron-only-device as a function of current density with the deconvolution of the spectrum using two Lorentzians with exciton and trion emission peaks. The blue, red and orange lines show the exciton, trion and the summed total spectrum, respectively, from the fits.
