Normalized 10 K spectra of the QDIP samples with different InAs coverages.
(a) 10 K PLE spectra with the PL peak energy as the detection energy and (b) shifted PLE spectra by setting the detection energies as zero of the QDIP samples.
Simplified band structures and the different transition mechanisms in PL/PLE spectra of the QDIP samples.
10 K spectral responses of the four QDIP samples biased at 0.6 V.
Sample structure of the QDIPs with different InAs coverages.
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