After
all tellurium has been completely consumed the resulting solution
was transferred into a second flask containing 4.0 103 mol of
CdCl2 and 6.8 103 mol of MPA in 100 mL N2 saturated solution.
The pH of the solution was adjusted to 11.5 with a 1.0 mol L1
NaOH solution. The molar ratio of Cd2+:Te2:MPA was fixed at
1:0.1:1.7. The size of CdTe QDs was controlled by changing the
refluxing time