Dark-bright excitons mixing in alloyed InGaAs self-assembled quantum dots

Phys. Rev. B 103, 155418 (2021)

This work shows that atomic-scale alloy randomness alone can activate and reshape dark-exciton optical signatures in nominally symmetric self-assembled quantum dots. It links dark-exciton visibility directly to microscopic alloy configuration.

Keywords: self-assembled quantum dots

Main result: alloy randomness can strongly enhance and modify dark–bright exciton mixing without requiring deliberate faceting or elongation. Dark-exciton properties in alloyed dots are therefore intrinsically sample-specific.

PDF: PHYSICAL REVIEW B103,155418 (2021).pdf

DOI: 10.1103/PhysRevB.103.155418

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