| 摘要 |
PURPOSE: A method for fabricating a solar cell is provided to improve the efficiency of photoelectric conversion by increasing impurity concentration of a selective emitter. CONSTITUTION: A first emitter layer is formed by diffusion of n-type impurity. A native oxide film which contains n-type impurity on the surface of the first emitter layer is formed(S110). Paste containing n-type impurity is coated on a predetermined portion of the native oxide film(S120). Thermal energy is supplied to the first emitter layer to form a second emitter layer(S160). The paste is coated by one of a screen printing and an inkjet printing process. [Reference numerals] (S110) Providing a substrate in which a first emitter layer is formed by diffusion of n-type impurities and a native oxide film containing n-type impurities is formed on the surface of the first emitter layer; (S120) Coating paste containing n-type impurities on a portion of the native oxide film; (S130) Drying the paste; (S140) Preheating the substrate; (S150) Arranging a mask with an opening for exposing the paste on the native oxide film; (S160) Forming a second emitter layer by supplying thermal energy to the paste, the native oxide film under the paste, and the first emitter layer; (S170) Removing the native oxide film; (S180) Forming an anti-reflection layer on the first emitter layer |
