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A novel GalnNAs/AlAs/AlGaAs double-barrier quantum-well-infrared-photo-detector was characterized by photoluminescence, x-ray diffraction, photoluminescence excitation, photocurrent spectra and dark current measurements. The photoluminescence peak at ~1.2 eV and the photocurrent peak at 1.24 mum originate from the interband transition and inter-subband transition, respectively, in the GalnNAs well...
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