The present application relates to a combined anti-scatter grid, cathode, and carrier for a photon detector used in spectral CT imaging. The photon detector of the present application may include a cathode having at least one outwardly extending plate and at least one base plate, a substrate having at least one anode, and a converter material, such as for example, Cadmium Zinc Telluride (“CZT”) or Cadmium Telluride. The at least one outwardly extending plate of the cathode may extend above the other detector components to act as an anti-scatter grid for the detector. Further, the at least one outwardly extending plate of the cathode may extend below the other detector components and be fixed to the at least one base plate of the detector. The converter material may be attached to at least one side of the at least one outwardly extending plate of the cathode.