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11-09-16

First thin AC-coupled silicon strip sensors on 8-inch wafers

Autoren: T. Bergauer, M. Dragicevic, A. König, J. Hacker, U. Bartl
Gruppe: CMS Tracker
Kategorie: Reviewed Paper

The Institute of High Energy Physics (HEPHY) in Vienna and the semiconductor manufacturer Infineon Technologies Austria AG developed a production process for planar AC-coupled silicon strip sensors manufactured on 200 μm thick 8-inch p-type wafers. In late 2015, the first wafers were delivered featuring the world's largest AC-coupled silicon strip sensors. Detailed electrical measurements were carried out at HEPHY, where single strip and global parameters were measured. Mechanical studies were conducted and the long-term behavior was investigated using a climate chamber. Furthermore, the electrical properties of various test structures were investigated to validate the quality of the manufacturing process.