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The 10 K spectral responses of devices (a) A and (b) B at ±2.0 V.
(a) The normalized 10 K spectral responses of device C at ±2.6 V and (b) the 10 K spectral responses of device C at −0.4, −0.8, and −1.2 V.
The schematic band diagrams of device C under positive and negative biases.
The normalized responsivities of device C under different incident IR light polarizations at ±2.6 V. The insert shows the measurement configuration. The theoretical curve for QW structures derived under the dipole-transition approximation is also shown as a reference.
The wave structures of the samples A, B, and C.
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