NOVELTY - Device (D1) for disposing a gas, comprises: a chamber (500); many gas jetting plates (300) disposed in the chamber, where each gas jetting plate comprises many gas jetting holes disposed on its surface; and a gas pipe (400) fluidly connected to the gas jetting plate and extending outside the chamber, where each gas jetting plate includes a first stage, which is fluidly connected to the gas pipe, and a final stage, which comprises the gas jetting holes.    USE - The device is useful for disposing gas in a solar cell (claimed).    ADVANTAGE - The device uniformly jets compounds/gas on the target substrate.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for:    (1) manufacturing a solar cell, comprising either: (a) forming a first electrode on a substrate, (b) forming a first metal layer comprising copper and gallium on the first electrode, (c) forming a second metal layer comprising indium on the first metal layer, (d) disposing the substrate comprising the first electrode, the first metal layer, and the second metal layer in a gas jetting device, (e) forming a positive (P) layer by jetting and heat treating hydrogen selenide onto the second metal layer, (f) forming an negative (N) layer on the P layer, and (g) forming a second electrode on the N layer to manufacture the solar cell, where the substrate is supported by the gas jetting device, and the gas jetting device includes a first stage, which receives the hydrogen selenide from outside of the gas jetting device, and a gas jetting plate of the gas jetting device comprises a gas jetting hole, which jets the hydrogen selenide onto the substrate; or the steps (a)-(g) as above per se, where the gas jetting device includes a body, which supplies a gas, a gas jetting unit disposed on the body and which jets the gas supplied from the body, and the gas jetting unit disposed in a vertical direction with respect to a surface of the body; and    (2) a device (D2) for jetting gas, comprising a body which supplies a gas, and a gas jetting unit disposed on the body, which jets the gas supplied from the body, where the gas jetting unit is disposed in a vertical direction with respect to a surface of the body.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic view of the method of manufacturing the solar cell.    Target substrate (100)    Gas jetting plates (300)    Gas pipe (400)    Chamber (500)