| 摘要 |
The invention relates to a free-standing semi-conductor substrate and to a method and a masking layer which is used to produce a free-standing semi-conductor substrate, wherein the semi-conductor substrate detaches itself automatically from the output substrate without using additional process steps. The inventive method for producing a semi-conductor substrate comprises the following steps: a starting substrate is prepared, a masking layer having a plurality of openings is applied to the masking layer, at least one semi-conductor substrate is grown and the masking layer is laterally overgrown by at least one semi-conductor material, and is subsequently, cooled by the starting substrate, the masking layer and the semi-conductor substrate. The material, which forms the masking layer, is at least partially made of wolfram silicide nitride or wolfram silicide, and it separates from the semi-conductor substrate and the starting substrate during growth of at least one semi-conductor substrate or whilst cooling and a free-standing semiconductor substrate is obtained. The inventive masking layer for producing a free-standing semi-conductor substrate is made, at least partially, of wolfram silicide nitride or wolfram silicide. |
