Fig. 1. PL spectra of CdSe NCs grown by chemical methods for different growth times among (a) 5, (b) 10, (c) 20, (d) 30, and (e) 60 min. As the growth times of CdSe NCs are increased, the PL energy peak shifts to longer wavelengths, which means the sizes of CdSe NCs are increased.
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