Origin of Centres Involved in Blue and Orange Luminescence of 6H-SiC

• Authors: A. Wysmołek , J.M. Baranowski , M. Kamińska
• Languages of publication: EN

Abstracts

EN

We present new results of luminescence of n-type 6H-SiC crystals. We have found two shallow donors with ionization energies at 60 meV and 140 meV. We have shown that the blue luminescence is not affected by the ionization of the shallower donor and is related to deeper donor which we attribute to N at C-site. We propose that the origin of the more shallower donor at 60 meV is related to carbon vacancy. We have found that the intensity of the orange luminescence increases under infrared illumination. This result confirms that the orange luminescence is due to conduction band-deep centre transitions. We believe that deep centre responsible for the orange luminescence is the silicon vacancy.

Keywords

EN

78.55.-m; 78.20.-e; 78.60.Kn

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1995
• Volume: 88
• Issue: 5
• Pages: 957-960

Dates

published

1995-11

Contributors

author

A. Wysmołek

• Institute of Experimental Physics, Warsaw University, Hoża 69, 00-681 Warszawa, Poland

author

J.M. Baranowski

• Institute of Experimental Physics, Warsaw University, Hoża 69, 00-681 Warszawa, Poland

author

M. Kamińska

• Institute of Experimental Physics, Warsaw University, Hoża 69, 00-681 Warszawa, Poland