Journal
PHYSICAL REVIEW B
Volume 84, Issue 19, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.84.195302
Keywords
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Funding
- C'Nano Ile-de-France
- European project Copernicus. [IST-249012]
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The optical properties of single InAs1-xPx/InP quantum dots are investigated by spectrally resolved and time-resolved photoluminescence measurements as a function of excitation power. In the short-wavelength region (below 1.45 mu m), the spectra display sharp distinct peaks resulting from the discrete electron-hole states in the dots, while in the long-wavelength range (above 1.45 mu m), these sharp peaks lie on a broad spectral background. In both regions, cascade emission observed by time-resolved photoluminescence confirms that the quantum dots possess discrete exciton and multiexciton states. Single photon emission is reported for the dots emitting at 1.3 mu m through antibunching measurements.
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