Electric field effect on the electron emission from Te-DX in AlxGa1−xAs

✍ Scribed by L. Bouzrara; R. Ajjel; H. Mejri; M.A. Zaidi; H. Maaref

• Publisher: Elsevier Science
• Year: 2006
• Tongue: English
• Weight: 97 KB
• Volume: 26
• Category: Article
• ISSN: 0928-4931
• DOI: 10.1016/j.msec.2005.10.002

✦ Synopsis

The present work is aimed to investigate the electron emission from DX centers in tellurium-doped Al x Ga 1Àx As with aluminium composition x = 0.40 using deep-level transient spectroscopy. Evidence that Te-DX exhibits an alloy splitting is shown from the temperature-dependent emission at a given reverse bias. The Poole -Frenkel effect was evoked to explain the electric field-enhanced emission. A discrepancy to this model is observed from experimental results. An attempt to explain this discrepancy as due mainly to the short-range character of the Te-DX-related potential.