TITLE

Large internal dipole moment in InGaN/GaN quantum dots

AUTHOR(S)
Ostapenko, Irina A.; Hönig, Gerald; Kindel, Christian; Rodt, Sven; Strittmatter, André; Hoffmann, Axel; Bimberg, Dieter
PUB. DATE
August 2010
SOURCE
Applied Physics Letters;8/9/2010, Vol. 97 Issue 6, p063103
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Direct observation of large permanent dipole moments of excitonic complexes in InGaN/GaN quantum dots is reported. Characteristic traces of spectral diffusion, observed in cathodoluminescence of InGaN/GaN quantum dots, allow deducing the magnitude of the intrinsic dipole moment. Our experimental results are in good agreement with realistic calculations of quantum dot transition energies for position-dependent external electric fields.
ACCESSION #
52929628

 

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