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Figure 1 | Nanoscale Research Letters

Figure 1

From: Structural and optical properties of position-retrievable low-density GaAs droplet epitaxial quantum dots for application to single photon sources with plasmonic optical coupling

Figure 1

Schematics of structures, AFM image, and the PL peaks of low-density GaAs DE QDs. (a) Schematics of structures of low-density GaAs DE QDs as a function of thickness of HT-Al0.3Ga0.7As (2, 25, 50, 85 nm), (b) AFM image (3 μm × 3 μm) of low-density GaAs DE QDs (approximately 4 QDs/μm2) on Al0.3Ga0.7As/GaAs substrate, and (c) macro-PL (log scale) and (d) μ-PL (exciton, biexciton peaks) spectra of low-density GaAs DE QDs with 105-nm capping at low temperature (12 ~ 16 K).

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