Figure 4From: Formation of PbSe/CdSe Core/Shell Nanocrystals for Stable Near-Infrared High Photoluminescence EmissionThe stability of PbSe (a) and PbSe/CdSe (b) QDs. The CdSe shells prevent PbSe core from the destructive oxidation. Compared with the unstable PbSe core, the PbSe/CdSe QDs remained unchangedBack to article page