Fig. 4: Angle-resolved EL measurements.

Polarized angle-resolved spectra of EL (a, b) and PL (c, d). The units of the color bars are arbitrary. e EL emission spectra of unpolarized, σ+ and σ− components. f Wavelength-dependent spin-splitting coefficient α of the RD effect and circularly polarized luminescence dissymmetry factor g of PL and EL with standard deviation error bars.