215613.fig.002a
(a)
215613.fig.002b
(b)
Figure 2: Experimental and theoretical storage times for the heterostructure materials listed in Table 1. (a) Electron storage. (b) Hole storage. Please note that the theoretical values (blue lines) are calculated for the effective electron and hole masses of GaAs. Hence, the extrapolated values for other materials might differ slightly.