Patent ID: 11972943
Assignee: APPLIED MATERIALS, INC.
Field: Surface technology, coating (Chemistry)
Classification: CPC H  C | IPC C  H

Claim 0:
1. A method of depositing a dielectric material, comprising:
a bottom-up gap fill process on a barrier layer including:
(a) providing a first gas mixture into a processing chamber having a substrate disposed therein, wherein the first gas mixture has at least one gas provided by a fluid source connected to an interior processing region of the processing chamber via a direct connection with a showerhead and wherein the interior processing region comprises a volume in direct contact with a substrate when present;
(b) during a first duration, forming a first remote plasma in a continuous power mode comprising first radicals formed in a remote plasma source and delivering the first radicals to the interior processing region in the processing chamber to form a layer of dielectric material with a dielectric constant and a first density in an opening in a material layer disposed on the substrate in a presence of the first gas mixture and the first radicals, wherein a first RF bias power is not supplying power during the first duration;
(c) terminating the first remote plasma and applying the first RF bias power to the processing chamber to form a first bias plasma for a second duration, wherein the first RF bias power is pulsed while the layer of dielectric material continues to be deposited until a desired thickness is obtained which ends the second duration;
(d) densifying the layer of dielectric material to a second density greater than the first density with the first bias plasma during a third duration after the second duration has ended by applying the first RF bias power in a continuous power mode to perform a single, continuous first treatment to form a first treated layer of dielectric material with an increased density of dielectric material, wherein a process gas mixture devoid of silicon is supplied to the interior processing region during the first bias plasma in the continuous power mode and wherein a completion of the single, continuous first treatment ends the third duration; and
(e) during a fourth duration, after the third duration has ended, subsequently forming a second remote plasma in a continuous power mode comprising second radicals in the remote plasma source and delivering the second radicals to the interior processing region in the processing chamber in a presence of a second gas mixture while concurrently applying a second RF bias power in a continuous power mode during the fourth duration to the processing chamber to form a second bias plasma in a single, continuous second treatment that is different from the single, continuous first treatment, wherein the second radicals and second bias plasma contact the first treated layer of dielectric material to increase a hydrophobicity of the first treated layer of dielectric material by a water contact angle of at least 10 degrees, wherein the second remote plasma is continuously generated by an RF power supply in a continuous power mode for an entire duration of the fourth duration of the single, continuous second treatment and the second RF bias power operates in a continuous power mode to continuously generate the second bias plasma for the entire duration of the fourth duration of the single, continuous second treatment and wherein the dielectric constant of the layer of dielectric material is maintained after the single, continuous second treatment.