Chemical vapor deposition methods, and atomic layer deposition method
First Claim
1. A chemical vapor deposition method comprising:
- positioning a semiconductor substrate within a deposition chamber;
feeding a first deposition precursor gas to an inlet of a variable volume accumulator reservoir; and
with the first deposition precursor gas therein, decreasing volume of the variable volume accumulator reservoir effective to expel first deposition precursor gas therefrom into the chamber under conditions effective to deposit a layer on the substrate.
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Abstract
The invention includes reactive gaseous deposition precursor feed apparatus and chemical vapor deposition methods. In one implementation, a reactive gaseous deposition precursor feed apparatus includes a gas passageway having an inlet and an outlet. A variable volume accumulator reservoir is joined in fluid communication with the gas passageway. In one implementation, a chemical vapor deposition method includes positioning a semiconductor substrate within a deposition chamber. A first deposition precursor is fed to an inlet of a variable volume accumulator reservoir. With the first deposition precursor therein, volume of the variable volume accumulator reservoir is decreased effective to expel first deposition precursor therefrom into the chamber under conditions effective to deposit a layer on the substrate.
107 Citations
64 Claims
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1. A chemical vapor deposition method comprising:
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positioning a semiconductor substrate within a deposition chamber;
feeding a first deposition precursor gas to an inlet of a variable volume accumulator reservoir; and
with the first deposition precursor gas therein, decreasing volume of the variable volume accumulator reservoir effective to expel first deposition precursor gas therefrom into the chamber under conditions effective to deposit a layer on the substrate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 59, 60)
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17. An atomic layer deposition method comprising:
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positioning a semiconductor substrate within an atomic layer deposition chamber;
feeding a first deposition precursor gas through an inlet valve to an inlet of a variable volume accumulator reservoir, an outlet valve from the variable volume accumulator reservoir being closed during said feeding; and
with the first deposition precursor gas therein, closing the inlet valve, opening the outlet valve and decreasing volume of the variable volume accumulator reservoir effective to expel first deposition precursor gas therefrom through the outlet valve and into the chamber under conditions effective to deposit a layer on the substrate. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 61, 62)
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33. A chemical vapor deposition method comprising:
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positioning a semiconductor substrate within a deposition chamber;
feeding a first deposition precursor gas to an inlet of a variable volume accumulator reservoir, the feeding occurring from a gas passageway through the inlet to the variable volume accumulator reservoir, and further comprising maintaining pressure within the gas passageway proximate the inlet and pressure within the variable volume accumulator reservoir substantially constant during said feeding; and
with the first deposition precursor gas therein, decreasing volume of the variable volume accumulator reservoir effective to expel first deposition precursor gas therefrom into the chamber under conditions effective to deposit a layer on the substrate, the expelling occurring through an outlet of the variable volume accumulator reservoir into the gas passageway from the variable volume accumulator reservoir, and further comprising maintaining pressure within the gas passageway proximate the outlet and pressure within the variable volume accumulator reservoir substantially constant during said decreasing. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 63, 64)
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45. A chemical vapor deposition method comprising:
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positioning a semiconductor substrate within a deposition chamber;
feeding a first deposition precursor gas through an inlet valve to an inlet of a variable volume accumulator reservoir, an outlet valve from the variable volume accumulator reservoir being closed during said feeding, said feeding providing a first volume of the first deposition precursor gas within the variable volume accumulator reservoir at a first pressure;
after providing the first volume of the first deposition precursor gas within the variable volume accumulator at the first pressure, closing the inlet valve;
with the inlet and outlet valves closed, reducing the first volume of the first deposition precursor gas within the variable volume accumulator reservoir effective to increase the pressure to a second pressure; and
after the reducing, opening the outlet valve and decreasing volume of the variable volume accumulator reservoir effective to expel first deposition precursor gas therefrom through the outlet valve at an outlet pressure exceeding the first pressure and into the chamber under conditions effective to deposit a layer on the substrate. - View Dependent Claims (46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58)
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Specification