TY - JOUR T1 - Investigation of Trap States in AllnN/AIN/GaN Heterostructures by Frequency-Dependent Admittance Analysis A1 - Arslan, E. A1 - Butun, S. A1 - Safak, Y. A1 - Ozbay, E. JA - J of Electronic Materials Y1 - 2010 VL - 39 SP - 2681 EP - 2686 ER -