Figure 3
From: Microwave-assisted synthesis of water-dispersed CdTe/CdSe core/shell type II quantum dots
Wavelength shift and PL intensity of CdTe/CdSe core/shell QDs. The PL intensities of the as-prepared QDs solutions were estimated from the samples diluted to a certain concentration with the same absorbance values at the wavelength of their first excitation absorption peak. (a) Wavelength shift and corresponding PL intensity of CdTe/CdSe QDs versus different absorption values of the CdSe precursor solution. (b) PL spectra of CdTe/CdSe core/shell QDs synthesized with different [Se2-]/[Cd2+] molar ratio. (c) PL intensity of CdTe/CdSe QDs versus different [Cd2+]/[MPA] molar ratio. (d) PL intensity of CdTe and CdTe/CdSe QDs versus the UV-illuminated treatment time.