Fast response of InSb Schottky detector

Area of Science:

• Materials Science
• Nuclear Instrumentation
• Semiconductor Physics

Background:

• Indium antimonide (InSb) detectors are utilized for particle detection.
• Previous InSb detectors have limitations in performance.
• High Hall mobility InSb wafers are desirable for improved detector characteristics.

Purpose of the Study:

• To fabricate and evaluate an InSb Schottky detector for alpha particle detection.
• To assess the performance of a detector made from a high Hall mobility InSb wafer.
• To compare the detector's output pulse characteristics with existing technologies.

Main Methods:

• Fabrication of an InSb Schottky detector using an undoped InSb wafer.
• Characterization of the InSb wafer for high Hall mobility.
• Testing the detector's response to alpha particle detection.
• Analysis of the output pulse rise time.

Main Results:

• The InSb Schottky detector was successfully fabricated from a high Hall mobility undoped InSb wafer.
• The detector demonstrated a very fast output pulse rise time.
• The rise time was found to be comparable to that of scintillation detectors.

Conclusions:

• Undoped InSb wafers with high Hall mobility can be effectively used to create advanced Schottky detectors.
• The developed InSb Schottky detector offers a promising alternative for alpha particle detection due to its fast response.
• This advancement in InSb detector technology could lead to improved radiation detection systems.