Patent ID: 7338833

Claim:
A method for making a high fill factor image array comprising the steps: providing a plurality of source-drain metal contacts on a substrate; depositing a first passivation layer over the plurality of source-drain metal contacts and the substrate; reducing the lateral leakage current between the plurality of source-drain metal contacts in the high fill factor image array by depositing a second passivation layer over the first passivation layer, the second passivation layer being thinner than the first passivation layer; opening a plurality of via holes through the first and second passivation layers to the plurality of source-drain metal contacts; depositing a layer of conductive material over the plurality of source-drain metal contacts and the second passivation layer; depositing a first doped a-Si layer as an optically active layer over the layer of conductive material; patterning the first doped a-Si layer and the layer of conductive material to form collection electrodes; depositing a continuous layer of i a-Si disposed on the second passivation layer and the first doped a-Si layer; depositing a continuous second layer of doped a-Si over the continuous layer of i a-Si; depositing an upper conductive layer over the second layer of doped a-Si; and patterning to form the image array.