Spatially Resolved Micro-Luminescence from GaN/AlGaN Quantum Dots

• Authors: B. Chwalisz , A. Wysmołek , R. Bożek , R. Stępniewski , K. Pakuła , P. Kossacki , A. Golnik , J. Baranowski
• Languages of publication: EN

Abstracts

EN

We report on the optical experiments performed on low density GaN/AlGaN quantum dots grown on sapphire substrate using SiN during the growth process. The existence of quantum dots in the investigated structures was confirmed by atomic force microscopy. Although macro-luminescence of the investigated structures consist of broad emission lines the micro-photoluminescence experiments performed with the spatial resolution of 0.25 μm revealed sharp emission lines from the individual quantum dot in the energy range of 3.20-3.55 eV. It is shown that the magnetic fields up to 7 T do not influence significantly the electronic states of the dots.

Keywords

EN

78.55.Cr; 78.66.Fd; 78.67.Hc; 75.75.+a; 68.65.Hb

Discipline

• 68.65.Hb: Quantum dots (patterned in quantum wells)
• 78.55.Cr: III-V semiconductors
• 78.67.Hc: Quantum dots
• 78.66.Fd: III-V semiconductors

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2004
• Volume: 105
• Issue: 6
• Pages: 517-521

Dates

published

2004-06

received

2004-05-28

Contributors

author

B. Chwalisz

• Institute of Experimental Physics, Warsaw University, Warsaw, Poland

author

A. Wysmołek

• Institute of Experimental Physics, Warsaw University, Warsaw, Poland

author

R. Bożek

• Institute of Experimental Physics, Warsaw University, Warsaw, Poland

author

R. Stępniewski

• Institute of Experimental Physics, Warsaw University, Warsaw, Poland

author

K. Pakuła

• Institute of Experimental Physics, Warsaw University, Warsaw, Poland

author

P. Kossacki

• Institute of Experimental Physics, Warsaw University, Warsaw, Poland

author

A. Golnik

• Institute of Experimental Physics, Warsaw University, Warsaw, Poland

author

J. Baranowski

• Institute of Experimental Physics, Warsaw University, Warsaw, Poland

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Identifiers

DOI

10.12693/APhysPolA.105.517