Abstract: A reactor can include a reaction chamber, a substrate support configured to support a substrate on a top side of the substrate support, and an elongate delivery apparatus disposed within the reaction chamber. The substrate support may be actuated to an upper position and to a lower position along a vertical axis within the reaction chamber. The substrate support may have a maximum horizontal dimension from the vertical axis along a horizontal axis substantially orthogonal to the vertical axis. The elongate delivery apparatus may have an inner horizontal dimension greater than the maximum horizontal dimension of the substrate support. The delivery apparatus can allow gas to pass through an interior of the delivery apparatus. The delivery apparatus can include a plurality of apertures. Each of the plurality of apertures can allow passage of the gas from the interior of the delivery apparatus into the reaction chamber.

Abstract: Gas-phase reactor systems and methods of cleaning same are disclosed. Exemplary systems include a cleaning gas diffuser within a reaction chamber to facilitate cleaning of components, such as a susceptor, within the reaction chamber. The cleaning gas diffuser can be configured to provide a flow of a cleaning reactant over one or more surfaces within the reaction chamber.

Abstract: The present disclosure pertains to embodiments of a showerhead assembly which can be used to deposit semiconductor layers using processes such as atomic layer deposition (ALD). The showerhead assembly has a showerhead which has an increased thickness which advantageously decreases reactor chamber size and decreases cycling time. Decreased cycling time can improve throughput and decrease costs.