METHOD OF MANUFACTURING A SEMICONDUCTOR SENSOR DEVICE AND SEMICONDUCTOR SENSOR DEVICE

摘要

The invention relates to a method of manufacturing a semiconductor sensor device (10) for sensing a substance comprising a plurality of mutually parallel mesa- shaped semiconductor regions (1) which are formed on a surface of a semiconductor body (11) and which are connected at a first end to a first electrically conducting connection region (2) and at a second end to a second electrically conducting connection region (3) while a gas or a liquid comprising a substance to be sensed can flow between the mesa-shaped semiconductor regions (1) and the substance to be sensed can influence the electrical properties of the plurality of the mesa-shaped semiconductor regions (1), wherein at the surface of the semiconductor body (11) the first connection region (2) is formed and connected thereto with the first end the plurality of mesa- shaped semiconductor regions (1) is formed, and subsequently the second connection region (3) is formed connected to the plurality of mesa- shaped semiconductor regions (1) at their second end. According to the invention after formation of the plurality of mesa- shaped semiconductor regions (1) the free space between these regions (1) is filled with a fill material (4) that can be selectively removed with respect to the material of the plurality of mesa- shaped semiconductor regions (1) and of other bordering parts of the semiconductor sensor device (10), subsequently a conducting layer (30) is deposited over the resulting structure from which the second connection region (3) is formed whereinafter the fill material (4) is removed by selective removed by which the space between the plurality of mesa- shaped semiconductor regions (1) is made free again. In this way sensor devices (10) are manufacturing with a method that is easily applied on an industrial scale and results in a high yield.