Mechanisms of Yellow and Red Photoluminescence in Wurtzite and Cubic GaN

• Authors: M. Godlewski , T. Suski , I. Grzegory , S. Porowski , R. Langer , A. Barski , J. Bergman , B. Monemar , E. Goldys , M. Phillips
• Languages of publication: EN

Abstracts

EN

The origin of two "deep" photoluminescence (PL) emissions observed in wurtzite (yellow PL) and cubic (red PL) GaN is discussed. PL and time-resolved PL studies confirm donor-acceptor pair character of the yellow band in wurtzite GaN and point to participation of shallow donors in this emission. A similar PL mechanism is proposed for the red emission of cubic GaN. We further show a puzzling property of both yellow and red PLs. Both yellow and red emissions show spatial homogeneity and are only weakly dependent on surface morphology.

Keywords

EN

61.16.Ch; 61.72.Ff; 71.55.Eq

Discipline

• 71.55.Eq: III-V semiconductors
• 61.72.Ff: Direct observation of dislocations and other defects (etch pits, decoration, electron microscopy, x-ray topography, etc.)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1998
• Volume: 94
• Issue: 2
• Pages: 326-330

Dates

published

1998-08

Contributors

author

M. Godlewski

• Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warsaw, Poland

author

T. Suski

• High Pressure Research Center, Polish Academy of Sciences, Sokołowska 29, 01-142 Warsaw, Poland

author

I. Grzegory

• High Pressure Research Center, Polish Academy of Sciences, Sokołowska 29, 01-142 Warsaw, Poland

author

S. Porowski

• High Pressure Research Center, Polish Academy of Sciences, Sokołowska 29, 01-142 Warsaw, Poland

author

R. Langer

• CEA-Grenoble, DRFMCSP2M, 17 rue des Martyrs, 38054 Grenoble, France

author

A. Barski

• CEA-Grenoble, DRFMCSP2M, 17 rue des Martyrs, 38054 Grenoble, France

author

J. Bergman

• Dept. Phys. & Meas. Technol., Linköping Univ., 581 83 Linköping, Sweden

author

B. Monemar

• Dept. Phys. & Meas. Technol., Linköping Univ., 581 83 Linköping, Sweden

author

E. Goldys

• Semicond. Sci. & Technol. Lab., Macquarie Univ., North Ryde, 2109 NSW, Australia

author

M. Phillips

• Microstructural Analysis Unit, University of Technology, Sydney, Australia

Identifiers

DOI

10.12693/APhysPolA.94.326