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Figure 4 | Nanoscale Research Letters

Figure 4

From: Ge/Si(001) heterostructures with dense arrays of Ge quantum dots: morphology, defects, photo-emf spectra and terahertz conductivity

Figure 4

In situ RHEED patterns of Ge/Si(001) films. E = 10 keV, [110] azimuth; (a) Tgr= 650℃, hGe= 4 Å; (b) Tgr= 360℃, hGe= 4 Å; (c) Tgr= 650℃, hGe= 5 Å; (d) Tgr= 650℃, hGe= 5 Å, annealing at the deposition temperature for 7 min; (e) Tgr= 650℃, hGe= 6 Å, the similar pattern is obtained for Tgr= 600℃; the patterns were obtained at room temperature after sample cooling.

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