Phase change memory device with plated phase change material
    10.
    发明授权
    Phase change memory device with plated phase change material 有权
    相变存储器件,具有电镀相变材料

    公开(公告)号:US08344351B2

    公开(公告)日:2013-01-01

    申请号:US13159594

    申请日:2011-06-14

    IPC分类号: H01L29/04 H01L47/00 H01L29/06

    摘要: A phase change memory device includes a plurality of memory cells comprising a substrate having a contact surface with an array of conductive contacts to be connected with access circuitry and a nitride layer formed at the contact surface. A plurality of vias are formed through the nitride layer to the contact surface and correspond to each conductive contact, the vias including a conformal conductive seed layer lining each via along exposed portions of the nitride layer and the contact surface and having oxidized edges. A dielectric layer is recessed within the conformal conductive seed layer and exposes a center region of each via. A phase change material is recessed within the center region of each via. A conductive material that remains conductive upon oxidation is formed over the phase change material. A top electrode is formed on each memory cell.

    摘要翻译: 相变存储器件包括多个存储单元,其包括具有与要与接触电路连接的导电触点阵列的接触表面的衬底和在接触表面形成的氮化物层。 多个通孔通过氮化物层形成到接触表面并且对应于每个导电接触,通孔包括沿着氮化物层和接触表面的暴露部分并且具有氧化边缘的每个通孔衬里的共形导电种子层。 电介质层凹入保形导电晶种层内并露出每个通孔的中心区域。 相变材料凹陷在每个通孔的中心区域内。 在相变材料上形成氧化时保持导电的导电材料。 在每个存储单元上形成顶部电极。