Figure 2. a) VOC response with illumination time at various LED white light intensities of a single occlusion handling pixel, containing (FK209)2+ only, b) both (FK209)2+ and (FK209)3+, and c) Co(II)(bpy)3 only redox couples. Black dashed vertical line indicates the moment when switching from light to dark (from object detection to memory). Hence, the portion of the graphs right of this dashed line represents the pixel’s learning behaviour. d) TiO2 electron lifetimes at various VOC for all three pixels corresponding to graphs a), b), and c). e) VOC vs light intensity for a single OHL pixel containing various redox couple compositions.