Journal
APPLIED PHYSICS LETTERS
Volume 84, Issue 20, Pages 4023-4025Publisher
AMER INST PHYSICS
DOI: 10.1063/1.1751214
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Cathodoluminescence spectra employing a shadow mask technique of InGaN layers grown by metalorganic chemical vapor deposition on Si(111) substrates are reported. Sharp lines originating from InGaN quantum dots are observed. Temperature dependent measurements reveal thermally induced carrier redistribution between the quantum dots. Spectral diffusion is observed and was used as a tool to correlate up to three lines that originate from the same quantum dot. Variation of excitation density leads to identification of exciton and biexciton. Binding and anti-binding complexes are discovered. (C) 2004 American Institute of Physics.
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