Freestanding Ge/GeO_𝟐 Core-Shell Nanocrystals with Varying Sizes and Shell Thicknesses: Microstructure and Photoluminescence Studies

Figure 5

Room temperature PL spectra for the Ge-0, Ge-10, Ge-20, and Ge-25. Inset of (a) shows the absorption spectra of the corresponding Ge/GeO₂ NCs.

(a)

(b)

(c)

(d)