Device with light-responsive layers

A light sensor comprising:

• a plurality of first elongated electrically conductive strips comprising at least a first strip;
• a plurality of second elongated electrically conductive strips comprising at least a second strip, the first strip extending in a first direction and the second strip extending in a second direction, different than the first direction, such that the second strip crosses the first strip to form a first junction, the second strip being spaced from the first strip such that the first junction is between the first strip and the second strip;
• a multilayered film structure comprising a first metal oxide layer, a second metal oxide layer, and a composite diffusion layer, each disposed between the plurality of first elongated electrically conductive strips and the plurality of second elongated electrically conductive strips, wherein:
• the composite diffusion layer comprising a first region that is oxygen deficient relative to the first metal oxide layer and the second metal oxide layer, a non-diffused region that provides an insulation region, and a second region that is oxygen deficient relative to the first metal oxide layer and the second metal oxide layer, the non-diffused region being between, and contiguous with, the first region and the second region, the composite diffusion layer being disposed between, and contiguous with, the first metal oxide layer and the second metal oxide layer;
• the first metal oxide layer having a first thickness and the second metal oxide having a second thickness, wherein the first thickness and second thickness are different, wherein the first junction resists electrical current when (1) not biased with a first polarity or (2) not exposed to light or (3) biased with a second polarity, opposite the first polarity and the first junction is less resistive to electrical current when biased with the first polarity and exposed to light;
• the plurality of first elongated electrically conductive strips comprising a third strip, spaced from the first strip, the first and third strip being coplanar and extending in a first direction;
• the plurality of second elongated electrically conductive strips comprising a fourth strip, spaced from the second strip, the second and fourth strip being coplanar and extending in a second direction, different than the first direction, the second strip crosses the first strip and the third strip to form the first junction and a second junction, respectively;
• the fourth strip crosses the first strip and the third strip to form a third junction and a fourth junction, wherein the multilayered film structure is contiguous with at least the first junction and the second junction.