2004/02/13 by Sangam Chatterjee, C. Ell, S. Mosor +7 · 4 citations
Materials Science · Physics and Astronomy · #Quantum Dots Synthesis And Properties #Photonic Crystals and Applications #Semiconductor Quantum Structures and Devices
paper · doi:10.1103/physrevlett.92.067402
openalex publication_date 2004/02/13 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Time-resolved photoluminescence spectra after nonresonant excitation show a distinct 1s resonance, independent of the existence of bound excitons. A microscopic analysis identifies exciton and electron-hole plasma contributions. For low temperatures and low densities, the excitonic emission is extremely sensitive to details of the electron-hole-pair population making it possible to identify even minute fractions of optically active excitons.