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(Color online) Schematic diagram of the QD solar cell containing three-stack InAs QDs.
Room temperature PL spectra from the test samples with (open circles) and without (solid line) SC layers.
(Color online) characteristics of three-stack QD solar cells with and without SC layers and a GaAs control cell under AM at illumination. For strain compensation 2, 4, and two 2 ML of GaP have been used between two successive QD stacks.
(Color online) External quantum efficiency (EQE) measurements of three-stack QD solar cells with and without SC layers and a GaAs control cell.
Measured open circuit voltages , short circuit current densities , and fill factors (FFs) of GaAs control cells and InAs QD solar cells with and without SC layers under AM 1.5G at light intensity.
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