Centura DPHe

The Applied Materials Centura DPHe is a deposition system manufactured by Applied Materials.^[1]

The Centura platform uses a central wafer-handling robot in a vacuum environment to transfer substrates between load locks and multiple process chambers. Each chamber can be configured for a specific deposition process, such as plasma-enhanced chemical vapor deposition (PECVD) or high-density plasma chemical vapor deposition (HDP-CVD). The system maintains separate vacuum levels and gas delivery systems to control film uniformity and composition.

Deposition systems in this class operate by introducing reactant gases into a low-pressure chamber where a plasma or thermal energy drives a chemical reaction to form a solid thin film on the wafer surface. Cluster tools allow sequential processing steps without breaking vacuum, reducing contamination and increasing throughput.

Thin-film deposition systems such as the Centura DPHe are used in semiconductor fabrication after wafer cleaning and before photolithography or etching steps, depending on the film type. The deposited layer may serve as an insulator, conductor, or sacrificial layer. Multiple deposition and annealing steps are often interleaved with other processes to build the device stack.

Deposition systems on the Centura platform are commonly used to deposit dielectric films such as silicon oxide, silicon nitride, and silicon oxynitride, as well as conductive films like doped polysilicon or metal silicides. The DPHe variant may target specific applications requiring high-density plasma for gap fill or low-temperature processing, such as interlayer dielectrics, passivation layers, or etch stop layers.