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Fabrication, characterization and simulation of channel stop for n in p-substrate silicon pixel detectors
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2014 (English)In: Journal of Instrumentation, ISSN 1748-0221, E-ISSN 1748-0221, Vol. 9, C07013- p.Article in journal (Refereed) Published
Abstract [en]

Silicon detectors made on p-substrates are expected to have a better radiation hardness as compared to detectors made on n-substrates. However, the fixed positive oxide charges induce an inversion layer of electrons in the substrate, which connects the pixels. The common means of solving this problem is by using a p-spray, individual p-stops or a combination of the two. Here, we investigate the use of field plates to suppress the fixed positive charges and to prevent the formation of an inversion layer. The fabricated detector shows a high breakdown voltage and low interpixel leakage current for a structure using biased field plates with a width of 20 m m. By using a spice model for simulation of the preamplifier, a cross talk of about 1.6% is achieved with this detector structure. The cross talk is caused by capacitive and resistive coupling between the pixels.

Place, publisher, year, edition, pages
2014. Vol. 9, C07013- p.
Keyword [en]
Solid state detectors, Radiation-hard detectors, Electronic detector readout concepts (solid-state)
National Category
Accelerator Physics and Instrumentation Physical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-233115DOI: 10.1088/1748-0221/9/07/C07013ISI: 000340050700013OAI: oai:DiVA.org:uu-233115DiVA: diva2:751554
Available from: 2014-10-01 Created: 2014-09-29 Last updated: 2017-12-05Bibliographically approved

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Brenner, Richard

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