Figure 4.

The comparison of different spectra in the In0.15Ga0.85As/GaAs/Al0.3Ga0.7As step QWs measured at room temperature. The spectrum of common photocurrent under dc bias (denoted as j0), the imaginary part of RD spectrum Δr/r, reflectance spectrum ΔR/R, and the normalized CPGE current induced by SIA and BIA in the step QWs.

Yu et al. Nanoscale Research Letters 2014 9:130   doi:10.1186/1556-276X-9-130
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