Extended Data Fig. 6: PeLED performance.
From: Intragrain 3D perovskite heterostructure for high-performance pure-red perovskite LEDs
a, b, Cross-sectional SEM image (a) and EL spectrum (b) of the fabricated PeLED. c, Current density-voltage (J-V) curves of electron-only (ITO/ZnO/Perovskite/PO-T2T/Al) and hole-only (ITO/PEDOT:PSS/PTAA/Perovskite/MoO3/Al) devices for heterostructured films. d, The maximum EQE distribution of the PeLEDs based on the heterostructured CsPbI3-xBrx thin films. e, EL spectra of the heterostructured film-based PeLEDs. f, The evolution of the EL peak position and corresponding FWHM. g, Degradation curves of the heterostructured CsPbI3-xBrx film-based PeLEDs at different initial luminance (L0) for calculating n. h, Calculation of n value using T50 of different luminance. i, j, Degradation curves of the heterostructured CsPbI3-xBrx film-based PeLEDs at different initial luminances (L0). Inset in j is the extracted stability statistics at 100 cd m−2 using the measured “n” derived from h.
