Abstract
We present ultrafast microscopy measurements on CdSSe semiconductor nanobelts addressing the early luminescence dynamics, charge transport, and charge carrier localization in individual nanoparticles. The diffraction limited spatial resolution of our femtosecond Kerr-gated microscope allowed us to address single particles and study the transport and localization in individual nanobelts. Microscopic “emission movies” consisting of 100 fs frames as well as time-resolved luminescence spectra of single CdSSe nanoparticles were recorded. The dramatically improved time-resolution enabled us to reveal the complex early emission dynamics of highly excited semiconductor nanobelts and to obtain Shockley−Read, nongeminate, and Auger recombination rates.
Published Version
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