Abstract

As cameras get smaller, individual pixels in image sensors will have to get smaller as well. Pixel design in the future will have to account for the placement of pixel wires that can interfere in the efficient collection of light. In this project, we used frequency- and time-domain simulations to search for an optimal pixel design.  From our simulations, we found that:

- Wires should be spaced as far apart as possible to maximize light collection.
- When incident light is perpendicular, wires should be centered in the pixel to provide a direct path to the photodetector.
- When incident light is at an angle, a less intuitive (non-linear) placement of the wires is optimal.
- When incident light is at an angle, the placement of wires can help guide and focus light into a photodetector. In some cases, the presence of optimally placed wires can provide for greater light collection than an empty pixel without any wires.