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High aspect ratio deep RIE for novel 3D radiation sensors in high energy physics applications

3D detectors with electrodes penetrating through the entire silicon substrate have many advantages over conventional planar silicon technology, for example, high radiation tolerance. High aspect ratio through-wafer holes are essential in such fabrication, and deep reactive ion etching (DRIE) is used...

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Main Authors: Kok, A., Hansen, T.-E., Hansen, T., Jensen, G.U., Lietaer, N., Mielnik, M., Storas, P.
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Language:English
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creator Kok, A.
Hansen, T.-E.
Hansen, T.
Jensen, G.U.
Lietaer, N.
Mielnik, M.
Storas, P.
description 3D detectors with electrodes penetrating through the entire silicon substrate have many advantages over conventional planar silicon technology, for example, high radiation tolerance. High aspect ratio through-wafer holes are essential in such fabrication, and deep reactive ion etching (DRIE) is used. A series of DRIE processes were tested and optimised to achieve the required aspect ratio, and in 5-¿m wide trenches, aspect ratios of 58:1 were achieved.
doi_str_mv 10.1109/NSSMIC.2009.5402256
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source IEEE Electronic Library (IEL) Conference Proceedings
subjects Electrodes
Etching
Fabrication
Nuclear and plasma sciences
Production
Radiation detectors
Signal to noise ratio
Silicon radiation detectors
Testing
Time factors
title High aspect ratio deep RIE for novel 3D radiation sensors in high energy physics applications
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