Abstract: The present invention provides a method of manufacturing a semiconductor device in which a thinned substrate of a semiconductor or semiconductor device is handled without cracks in the substrate and treated with heat to improve a contact between semiconductor back surface and metal in a high yield and a semiconductor device may be manufactured in a high yield. In the method of manufacturing a semiconductor device according to the present invention, a notched part is formed from a surface to a middle in a semiconductor substrate by dicing and the surface of the substrate is fixed to a support base. Next, a back surface of the substrate is ground to thin the semiconductor substrate and then a metal electrode and a carbon film that is a heat receiving layer are sequentially formed on the back surface of the substrate. Next, the carbon film is irradiated with light at a power density of 1 kW/cm2 to 1 MW/cm2 for a short time of 0.

Abstract: The present invention provides a method of manufacturing a semiconductor device in which a thinned substrate of a semiconductor or semiconductor device is handled without cracks in the substrate and treated with heat to improve a contact between semiconductor back surface and metal in a high yield and a semiconductor device may be manufactured in a high yield. In the method of manufacturing a semiconductor device according to the present invention, a notched part is formed from a surface to a middle in a semiconductor substrate by dicing and the surface of the substrate is fixed to a support base. Next, a back surface of the substrate is ground to thin the semiconductor substrate and then a metal electrode and a carbon film that is a heat receiving layer are sequentially formed on the back surface of the substrate. Next, the carbon film is irradiated with light at a power density of 1 kW/cm2 to 1 MW/cm2 for a short time of 0.

Abstract: The present invention relates to a method of heat-treating a semiconductor, and the object is to enable heat-treating to a semiconductor or semiconductor device in a short period time and to obtain a stable and high reforming effect. The present invention is a method in which carbon or a layer including carbon is provided as a light absorbing layer, and a semiconductor material as a heat-treating target layer or semiconductor device contacting the heat absorbing layer directly or through a heat transfer layer of 5 nm-100 ?m in thickness is heat-treated, and the light source to be used is a semiconductor laser light of wavelength of 600 nm-2 ?m, and this semiconductor laser light is caused to continuously irradiate and sweep the surface of the heat-treating target material. The light source can be easily made to output high power, and heat-treating at a high speed and with low energy consumption is realized.