Abstract: [Problems] To provide a silicon electrode plate for plasma etching that suppresses the unevenness of the surface caused by plasma etching so as to ensure uniform etching. [Means for Solving the Problems] The silicon electrode plate for plasma etching is constituted by single-crystal silicon in which B and Al have been added as dopants, wherein the concentration of Al is equal to or greater than 1×1013 atoms/cm3. In the silicon electrode plate for plasma etching, the electrical characteristic of single-crystal silicon is made uniform in a plane. Thus, the occurrence of unevenness of the surface may be minimized when the surface is depleted during plasma etching, and the occurrence of cracks may be suppressed.

Abstract: This silicon electrode plate for plasma etching is a silicon electrode plate for plasma etching with superior durability including silicon single crystal which, in terms of atomic ratio, contains 3 to 11 ppba of boron, and further contains a total of 0.5 to 6 ppba of either or both of phosphorus and arsenic.

Abstract: This silicon electrode plate for plasma etching is a silicon electrode plate for plasma etching with superior durability including silicon single crystal which, in terms of atomic ratio, contains 3 to 11 ppba of boron, and further contains a total of 0.5 to 6 ppba of either or both of phosphorus and arsenic.