Nozzle head and apparatus
A nozzle head and apparatus for subjecting a surface of a substrate to alternate surface reactions of at least two precursors (A, B) includes an output face, at least one gas supply nozzle, and at least one discharge nozzle. The nozzle head includes on the output face in the following order: a first zone end nozzle, a gas supply nozzle and a second zone end nozzle, repeated one or more times. The first zone end nozzle is arranged at a first distance (L Y ) from the gas supply nozzle and the second zone end nozzle is arranged at a second distance (L X ) from the gas supply nozzle. The second distance (L X ) is greater than the first distance (L Y ).
1. A nozzle head for subjecting a surface of a substrate to alternate surface reactions of at least two precursors (A, B) according to principles of atomic layer deposition, the nozzle head comprising:
an output face via which gas is supplied towards the surface of the substrate and discharged from the surface of the substrate;
at least one gas supply nozzle arranged to supply gas towards the surface of the substrate; and
at least one discharge nozzle arranged to discharge gas from the surface of the substrate via the output face,
the nozzle head comprises on the output face in the following order: a first zone end nozzle, a gas supply nozzle and a second zone end nozzle, repeated one or more times on the output face,
the first zone end nozzle is a discharge nozzle and is connected to a vacuum device for discharging gas from the surface of the substrate via the first zone end nozzle,
the second zone end nozzle is a discharge nozzle and is connected to a vacuum device for discharging gas from the surface of the substrate via the second zone end nozzle,
the gas supply nozzle is a precursor nozzle and is connected to a precursor source for supplying precursor to the surface of the substrate via the gas supply nozzle, the gas supply nozzle is provided between the first zone end nozzle and the second zone end nozzle,
wherein a gas outlet of the first zone end nozzle, a gas outlet of the second zone end nozzle, a gas outlet of the gas supply nozzle, and the output face are all within a common plane,
wherein the gas outlet of the first zone end nozzle is arranged at a first distance (L Y ) from the gas outlet of the gas supply nozzle, and the gas outlet of the second zone end nozzle is arranged at a second distance (L X ) from the gas outlet of the gas supply nozzle, and
wherein the second distance (L X ) is at least 1.5 times greater than the first distance (L Y ).
2. The nozzle head according to claim 1 , wherein the nozzle head comprises:
a precursor zone (Z A , Z B ) provided between the first zone end nozzle and the second zone end nozzle such that the gas supply nozzle is a precursor nozzle arranged to supply precursor (A, B) towards the surface of the substrate; or
a first precursor zone (Z A ) provided between the first zone end nozzle and the second zone end nozzle such that the gas supply nozzle is a first precursor nozzle arranged to supply a first precursor (A) towards the surface of the substrate, and a second precursor zone (Z B ) provided between the first zone end nozzle and the second zone end nozzle such that the gas supply nozzle is a second precursor nozzle arranged to supply a second precursor (B) towards the surface of the substrate.
3. The nozzle head according to claim 1 , wherein the gas supply nozzle is arranged to supply precursor (A, B) towards the surface of the substrate via the output face.
4. The nozzle head according to claim 3 , wherein:
the nozzle head comprises on the output face in the following order: a purge gas nozzle, a discharge nozzle, a gas supply nozzle and a discharge nozzle, repeated one or more times on the output face; or
the nozzle head comprises on the output face in the following order: a purge gas nozzle, a discharge nozzle, a gas supply nozzle, a discharge nozzle and a purge gas nozzle, repeated one or more times on the output face; or
the nozzle head comprises on the output face in the following order: a purge gas nozzle, a discharge nozzle, a gas supply nozzle, a discharge nozzle, a purge gas nozzle and a discharge nozzle, repeated one or more times on the output face.
5. The nozzle head according to claim 1 , wherein:
the nozzle head comprises on the output face in the following order: a discharge nozzle, a purge gas nozzle, a gas supply nozzle and a discharge nozzle, repeated one or more times on the output face; or
the nozzle head comprises on the output face in the following order: a discharge nozzle, a purge gas nozzle, a gas supply nozzle, a discharge nozzle and a purge gas nozzle, repeated one or more times on the output face; or
the nozzle head comprises on the output face in the following order: a discharge nozzle, a purge gas nozzle, a gas supply nozzle, the discharge nozzle, a purge gas nozzle and a discharge nozzle, repeated one or more times on the output face;
the nozzle head comprises on the output face in the following order: a purge gas nozzle, discharge nozzle, gas supply nozzle, discharge nozzle, a purge gas nozzle and a discharge nozzle, repeated one or more times on the output face.
6. The nozzle head according to claim 1 , wherein the output face comprises a first end and a second end, and that:
the first zone end nozzle, the gas supply nozzle and the second zone end nozzle are arranged on the output face between the first end and the second end; or
the first zone end nozzle, the gas supply nozzle and the second zone end nozzle are longitudinal nozzles arranged on the output face adjacent to each other and arranged on the output face between the first end and the second end in the mentioned order;
the first zone end nozzle, the gas supply nozzle and the second zone end nozzle are longitudinal nozzles arranged on the output face adjacent to each other in a direction between the first end and the second end and arranged on the output face between the first end and the second end in the mentioned order.
7. The nozzle head according to claim 1 , wherein the second distance (L X ) is at least 3 times the first distance (L Y ).
8. The nozzle head according to claim 1 , wherein the first zone end nozzle defines a constant width between a gas inlet of the first zone end nozzle and a gas outlet of the first zone end nozzle, wherein the gas outlet of the first zone end nozzle is at the output face of the nozzle head, wherein the second zone end nozzle defines a constant width between a gas inlet of the second zone end nozzle and a gas outlet of the first zone end nozzle, wherein the gas outlet of the second zone end nozzle is at the output face of the nozzle head, wherein the gas supply nozzle defines a constant width between a gas inlet of the gas supply nozzle and a gas outlet of the gas supply nozzle, and wherein the gas outlet of the gas supply nozzle is at the output face of the nozzle head.
9. The nozzle head according to claim 1 , wherein a gas inlet of the first zone end nozzle is arranged at the first distance (L Y ) from a gas inlet of the gas supply nozzle, and a gas inlet of the second zone end nozzle is arranged at the second distance (L X ) from the gas inlet of the gas supply nozzle.
10. The nozzle head according to claim 1 , wherein the gas supply nozzle is directly adjacent the first zone end nozzle, and wherein the gas supply nozzle is directly adjacent the second zone end nozzle.