Author/Authors :
Vaitkus، نويسنده , , J. and Cunningham، نويسنده , , W. and Gaubas، نويسنده , , E. and Rahman، نويسنده , , M. and Sakai، نويسنده , , S. and Smith، نويسنده , , K.M. and Wang، نويسنده , , T.، نويسنده ,
Abstract :
The application of semi-insulating GaN for detection of ionising particles, specifically α-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 of 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.
