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Strip silicon radiation detectors
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Strip silicon detectors consist of n type material while having p type aluminium strips on the surface which are separated by a thin insulator. At the same time there is an electric field between the p strips and the n type material. When a radiation particle passes the detector, silicon atoms are ionized and free electrons leave these atoms with an electron vacancy (holes). After they reach the p type strip they are collected and then create a charge on the aluminium strip which is possible to be measured with special electronics.
Orava et al (2007) proposes a new type of the strip silicon detector (Figure 2) which implements cross-connected short strips interlaced by long strips. The main advantage is that better measuring resolution is achieved, which requires much less accuracy [3].
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- Does it contain Silicon? Is the structure crystalline or polysilicon?What plastic materials are used and why?
Strip silicon detectors consist of n type material while having p type aluminium strips on the surface which are separated by a thin insulator.
- Are metals used? Which ones? Why?
aluminium strips
- How about ceramics and glasses?
yes
- Why some materials are more favorable than others in your sensor or application?
- How is the sensor manufactured?
- What are the typical manufacturing process steps?
Silicon micromachining
Photolithography
Silicon radiation detectors characteristics
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