Photoluminescence and Photoconductivity Dynamics in Semi-Insulating Epitaxial GaN Layers

• Authors: E. Gaubas , S. Juršėnas , K. Kazlauskas , S. Miasojedovas , J. Vaitkus , A. Žukauskas
• Languages of publication: EN

Abstracts

EN

The transients of fast free-carrier recombination and of multi-trapping processes due to different species of defects have been investigated by photoluminescence and by contact and microwave photoconductivity. Three distinct stages of relaxation, namely, of stimulated emission, of recombination due to point defects and capture into trapping centers associated with dislocations, and a non-exponential stage with a stretched-exponent asymptotic decay ascribed to dislocations mediated multi-trapping were distinguished by correlated examination of time-resolved photoluminescence and photoconductivity transients.

Keywords

EN

61.72.Hh; 72.40.+w

Discipline

• 61.72.Hh: Indirect evidence of dislocations and other defects (resistivity, slip, creep, strains, internal friction, EPR, NMR, etc.)
• 72.40.+w: Photoconduction and photovoltaic effects

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2005
• Volume: 107
• Issue: 1
• Pages: 215-219

Dates

published

2005-01

received

2004-08-22

Contributors

author

E. Gaubas

• Institute of Materials Science and Applied Research, Vilnius University, Saulėtekio al. 10, 10223 Vilnius, Lithuania

author

S. Juršėnas

• Institute of Materials Science and Applied Research, Vilnius University, Saulėtekio al. 10, 10223 Vilnius, Lithuania

author

K. Kazlauskas

• Institute of Materials Science and Applied Research, Vilnius University, Saulėtekio al. 10, 10223 Vilnius, Lithuania

author

S. Miasojedovas

• Institute of Materials Science and Applied Research, Vilnius University, Saulėtekio al. 10, 10223 Vilnius, Lithuania

author

J. Vaitkus

• Institute of Materials Science and Applied Research, Vilnius University, Saulėtekio al. 10, 10223 Vilnius, Lithuania

author

A. Žukauskas

• Institute of Materials Science and Applied Research, Vilnius University, Saulėtekio al. 10, 10223 Vilnius, Lithuania

References

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Identifiers

DOI

10.12693/APhysPolA.107.215