Page 77 - Environmental Nanotechnology Applications and Impacts of Nanomaterials

Nanomaterials Fabrication 63

Figure 3.24 High-resolution (a) SEM and (b) TEM images of PbSe nanowires grown in solu-
tion in the presence of oleic acid. (c) high-resolution TEM images of PbSe nanowires
formed in the presence of oleic acid and n-tetradecylphosphonic acid. Selected area elec-
tron diffraction from single nanowires imaged along the (100) and (110) zone axes (insets
to c). (d, e) TEM image of PbSe nanorings (bar 5 nm) [106].

well-defined nanoparticles of InSe and GaSe from the vapor phase
thermolysis of precursor molecules under CVD conditions.
t
CVD growth using the cubane precursors [( Bu)GaSe] 4 (Figure 3.25a)
and [(EtMe C)InSe] (Figure 3.25b) carried out on single crystal KBr
2
4

t
Bu EtMe 2 C
(a) t Bu (b) CMe 2 Et
Ga Se In Se
Se Ga Se In
Se Ga Se In
t Bu CMe Et
Ga Se In Se 2
t Bu EtMe C
2
Figure 3.25 The structure of the cubane single source precursors
to GaSe and InSe nanoparticles [113, 114].