Semi-insulating GaN and its evaluation for alpha particle detection

Vaitkus, J., Cunningham, W. , Gaubas, E., Rahman, M., Sakai, S., Smith, K.M. and Wang, T. (2003) Semi-insulating GaN and its evaluation for alpha particle detection. Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment, 509(1-3), 60 -64. (doi: 10.1016/S0168-9002(03)01550-X)

Abstract

The application of semi-insulating GaN for detection of ionising particles, specifically alpha-particles, is presented. The electrical properties of GaN epitaxial layers have been investigated and the space charge limited and Ohmic currents were observed. A microwave method was used for temporal measurements if the photocurrent. Transient behaviour of the injection current and photo-response was observed, with a wide range of instantaneous time constants. The charge collection efficiency was measured to be approximately 100% and the role of inhomogeneities in the charge collection peculiarities was analysed.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Vaitkus, Prof Juozas and Cunningham, Dr Liam and Smith, Professor Kenway and Sakai, Mr Satoru
• Authors: Vaitkus, J., Cunningham, W., Gaubas, E., Rahman, M., Sakai, S., Smith, K.M., and Wang, T.
• Subjects: Q Science > QC Physics
• College/School: College of Science and Engineering > School of Physics and Astronomy
• Journal Name: Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment
• ISSN: 0168-9002
• ISSN (Online): 1872-9576