Abstract: The present invention relates to the field of electro-thermal conversion material and its products, made by semiconductor material. The process of making the electrothermal conversion material is as follows: a liquor is composed by dissolving two kinds of chloride (tin tetrachloride, etc.) in ethyl alcohol or carbinol, and another liquor, ammonium fluoride. After atomization of these two liquors, under the condition of high temperature, high valent metal oxide, low valent metal oxide and metal single substance etc, the metals of which correspond to the two kinds of chloride, deposit onto the surface of the high-temperature-resistant insulating material, forming a conductive semiconductor membrane.