Fig. 3: Stacked-detector colour accuracy.
From: Vertically stacked monolithic perovskite colour photodetectors
a, A colour-accuracy measurement scheme. b, Emission spectrum of the white LED used to illuminate the ColorChecker patches. c, The reflectance spectrum of a green patch [2, 2] of the ColorChecker on a background of white-LED emission. d, RGB photocurrent signals (coloured bars, right y axis) as spectrally integrated products of reflected light of the patch [2, 2] (solid line) and corresponding EQE spectra (dashed lines, left y axis) of the stacked detector. e, Data matrix of measured photocurrents (that is, device-dependent RGB signals) for each pad of the ColorChecker chart. f, An image of the ColorChecker chart reconstructed from photocurrents of all three colour pixels of the stacked-perovskite detector. The intermediate images representing each calculation step are shown in the Extended Data Fig. 3. a.u., arbitrary units.
