Skip to main content
. 2020 Sep 7;11:4442. doi: 10.1038/s41467-020-18307-w

Fig. 5. Degree of spin polarization and the dynamics in PbI2/WSe2 heterostructures.

Fig. 5

a Schematic of the type-II band alignment and the corresponding photogenerated carrier behaviors in PbI2/WSe2 heterostructures. b Circularly polarized PL spectra from a 9.5 nm thick PbI2/WSe2 heterostructure, and the corresponding calculated ρ as a function of wavelength. The excitation is 488 nm σ− polarized CW laser. ce Circularly polarized PL spectra (c) and TRPL data from PbI2 (d) and WSe2 (e) in PbI2/WSe2 heterostructure, and the corresponding degree of polarization ρ calculated from PL and TRPL spectra. Excitation with 441 nm σ+ polarization femtosecond laser pulses.