Figure 1.

a Temperature dependence of the integrated PL intensity from the QD (stars) and from the WL at B = 0 (squares) and B = 5 T (triangles) at an excitation energy, exc = 1.540 eV. b Schematic illustration of the band diagram of the structure, showing the transport of electrons and holes via the WL localizing potentials toward the QD

Larsson et al. Nanoscale Research Letters 2010 5:1150-1155   doi:10.1007/s11671-010-9618-x