(a) Normalized PL spectra for a series of MPA-capped CdTe QDs shows peak emissions between 520 and 680 nm; the inset shows the luminescence image of various CdTe QDs under 365 nm UV light excitement. (b) Measured and fitted exponential decay from CdTe QDs emitting at 530 nm, 580 nm, and 650 nm with decay time of 19 ns, 21 ns, and 87 ns, respectively.