It’s conceptually the same as Foveon, but using a perovskite semiconductor. Only just made it to the “works in the lab” stage, though, so still some ways to go before being able to buy an actual camera with this tech.
Press release:
Paper: Vertically stacked monolithic perovskite colour photodetectors | Nature
Some of the good news:
The stacked sensor technology, where the distance between the layers can be additionally controlled by dielectric spacers, also allows for the correction of chromatic aberration (that is, when the focal plane for blue colour is a few to a few tens of micrometres closer to the objective than that for red colour).
The bad news:
However, as we consider the cross-bar array as proof of concept of a monolithically stacked imager, the next step in the development of these sensors would be an integration with active pixel readouts. This would require substantial advancements in perovskite lithography and vertical interconnects for multilayered structures, as well as the design of dedicated triple-channel image sensor CMOS or TFT circuits.