| abstract |
Aggregated crystalline powdered silicon having a BET surface area of 20 to 150 m2 / g is obtained, which is obtained by heating at least one vapor or gaseous silane and optionally at least one vapor or gaseous dopant, an inert gas and hydrogen in a reactor with hot walls, cooling the reaction mixture or allowing the reaction mixture to cool and separate the reaction product from gaseous substances in the form of a powder in which the proportion of silane It is in the range between 0.1 and 90 wt. % in terms of the total amount of silane, dopant and inert gases, and in which the proportion of hydrogen in terms of the total amount of hydrogen silane, inert gases and dopant is in the range from 1 to 96 mol. % The product can be used to make electronic components. |