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Opto-electrical properties of sputtered AlN films

J. P. KAR1,* , G. BOSE1, S. TULI1, S. MUKHEJEE2, J. M. MYOUNG3

Affiliation

  1. Centre for Applied Research in Electronics, I.I.T. Delhi, New Delhi, 110 016, India
  2. School of Elect. and Comp. Eng., University of Oklahoma, Norman, 73019, USA
  3. Department of Materials Science and Engineering, Yonsei University, Seoul 120-749, Republic of Korea

Abstract

AlN films were grown on silicon by DC reactive magnetron sputtering and Al/AlN/Si structures were fabricated to study the influence of post metalization annealing (PMA) and UV light. Thereafter, the samples were annealed at 350 ºC for 30 minutes in presence of argon gas. Reduction of hysteresis as well as interface state density was observed as a result of PMA. On the other hand, a ledge appeared in C-V curves, which became prominent with light intensity. The leakage current increased significantly as a result of photo generated charge carriers..

Keywords

AlN, Sputtering, UV, Electrical measurements.

Citation

J. P. KAR, G. BOSE, S. TULI, S. MUKHEJEE, J. M. MYOUNG, Opto-electrical properties of sputtered AlN films, Optoelectronics and Advanced Materials - Rapid Communications, 3, 6, June 2009, pp.631-633 (2009).

Submitted at: June 6, 2009

Accepted at: June 15, 2009