Spatially resolved luminescence spectroscopy of single GaN/(Al,Ga)N quantum disks | Zendy

Jahn U. | Zendy; Calleja E. | Zendy; Ristić J. | Zendy; Trampert A. | Zendy; Rivera C. | Zendy

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Spatially resolved luminescence spectroscopy of single GaN/(Al,Ga)N quantum disks

Author(s) -

Jahn U.,

Calleja E.,

Ristić J.,

Trampert A.,

Rivera C.

Publication year - 2008

Publication title -

physica status solidi c

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.21

H-Index - 46

eISSN - 1610-1642

pISSN - 1862-6351

DOI - 10.1002/pssc.200778508

Subject(s) - cathodoluminescence , spectroscopy , luminescence , materials science , quantum well , substrate (aquarium) , quantum , condensed matter physics , optoelectronics , optics , physics , laser , geology , oceanography , quantum mechanics

The dependence of the optical transition energy E t of GaN quantum disks (Qdisks) embedded within (Al,Ga)N nanocolumns grown on a (111) Si substrate on disk thickness, disk diameter, barrier thickness, and barrier composition has been investigated by both spatially resolved cathodoluminescence spectroscopy and applying a theoretical model. Results of E t on the disk and barrier thickness, as well as barrier composition resemble those of corresponding quantum wells, whereas results on the disk diameter are essentially determined by the lateral strain distribution of the Qdisks. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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