Patent ID: 7651733

Claim:
A method of forming a vapor-phase-growth film on a surface of a substrate by using a vapor-phase growing unit, the vapor-phase growing unit including: a reaction container in which a substrate is arranged, a first gas-introducing part having a first gas-introducing tube in which a gas-spouting port opening in the reaction container is formed, the first gas-introducing part serving to supply into the reaction container a first gas consisting of a metal including gas, and a second gas-introducing part having a second gas-introducing tube in which a gas-spouting port opening in the reaction container is formed, the second gas-introducing part serving to supply into the reaction container a second gas which reacts with the metal including gas and whose density is smaller than that of the metal including gas, the gas-spouting port of the first gas-introducing tube being formed by a slit-like through hole that opens in a direction parallel to a surface of the substrate, the gas-spouting port of the second gas-introducing tube being formed by a circular through hole, the gas-spouting port of the first gas-introducing tube and the gas-spouting port of the second gas-introducing tube being arranged along an outside periphery of each of the substrates arranged in the reaction container; the method comprising: a step of supplying the first gas from the gas-spouting port of the first gas-introducing tube into the reaction container in a first path to the center of the substrate, and a step of supplying the second gas from the gas-spouting port of the second gas-introducing tube into the reaction container in a second path that intersects the first path at the center of the substrate, wherein a flow of the second gas introduced into the reaction container through the gas-spouting port of the second gas-introducing tube causes the first gas introduced into the reaction container through the gas-spouting port of the first gas-introducing tube to be dispersed along a surface of the substrate, and wherein an angle wherein an angle formed by the intersection between the first path and the second path is no larger than 10 degrees.