Photodiode structures

Photodiode structures and methods of manufacture are disclosed. The method includes forming a waveguide structure in a dielectric layer. The method further includes forming a Ge material in proximity to the waveguide structure in a back end of the line (BEOL) metal layer. The method further includes...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Peterson, Kirk D, Ellis-Monaghan, John J, Gambino, Jeffrey P, Jaffe, Mark D
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:Photodiode structures and methods of manufacture are disclosed. The method includes forming a waveguide structure in a dielectric layer. The method further includes forming a Ge material in proximity to the waveguide structure in a back end of the line (BEOL) metal layer. The method further includes crystallizing the Ge material into a crystalline Ge structure by a low temperature annealing process with a metal layer in contact with the Ge material.