179289.fig.002a
(a)
179289.fig.002b
(b)
179289.fig.002c
(c)
179289.fig.002d
(d)
179289.fig.002e
(e)
179289.fig.002f
(f)
Figure 2: The XRD patterns of (a) four QDs and TiO2 and (b) four heterojunctions and TiO2; the HRTEM of (c) PbS, (d) In-PbS; (e) CdS, and (f) In-CdS.