Extended Data Fig. 2: Ultrafast transient absorption (TA) spectra and corresponding photoluminescence spectra for se-epitaxy and de-epitaxy films with different bandgap.
From: Perovskite heteroepitaxy for high-efficiency and stable pure-red LEDs
a-c, Transient absorption spectra of se-epitaxy films with photoluminescence peak at 634 nm (a), 672 nm (b), and 700 nm (c). d-f, Corresponding absorption (grey solid lines) and photoluminescence spectra of se-epitaxy films, where the photoluminescence spectra were plotted in linear scale (green dashed lines) and log scale (green solid lines). g-i, Transient absorption spectra of de-epitaxy films with photoluminescence peak at 633 nm (g), 670 nm (h), and 700 nm (i). j-l, Corresponding absorption (grey solid lines) and photoluminescence spectra of de-epitaxy films, where the photoluminescence spectra were plotted in linear scale (blue dashed lines) and log scale (blue solid lines).
