Fig. 1: Polarized luminescence from a 0D/2D nanocomposite.

a TEM image of inorganic 0D carbon dot/2D nanosheet heterojunction. b Birefringent pattern for a dispersion of 0D carbon dot/2D nanosheets in the presence of crossed polarizers. c Photograph under 365 nm light illumination. d Schematic diagram of working principle of multifunctional opto-electronic device where the 2D sheets are aligned in an external electric field. e Fluorescence polarization characteristics. f Linear dependence between the relative ratio of transmittances at polarizer angles of 90^o and 0^o with wavelength of heterojunction dispersion in an electric field of 6 V mm⁻¹