Fig. 3: Spin polarization dynamics of PbI2/WS2 heterostructures.
From: Room temperature near unity spin polarization in 2D Van der Waals heterostructures
a–c Circularly polarized PL spectra (a) and TRPL data from PbI2 (b), and WS2 (c) of PbI2/WS2 heterostructures. d–f Corresponding degree of polarization ρ as a function of wavelength and time calculated from the PL and TRPL spectra. For excitation, a 441 nm σ+ polarized fs-pulsed laser beam was used.
