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Photoelectric Properties of InAs/GaAs Quantum Dot Photoconductive Antenna Wafers

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Figure

Fig. 1.(a) Normalized photoluminescence spectrum with the ground state(GS), the first excited state (ES1) and the second excited state (ES2) indicated;(b) the simplified schematic of the experimental setup
Fig. 2.Photoconductivity spectra of PCA biased with 20V DC, at varioustemperatures. Solid curves represent fitting with three (two for lower temper-atures) gaussians, corresponding to GS and ES QD PCA photoconductivitypeaks.
Fig. 3. (a) GS and ES1 Photoconductivity dependence on inverse temperature.(b) Temperature dependence of GS, ES1 and ES2 photoconductivity peaks.Dashed lines show Varshni relation approximation for the data.

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