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

Figure 3

Raman spectra of the Ge/GeO₂ core-shell NCs obtained after different milling times. With increase in milling time, Raman peak intensity of GeO₂ increases while Raman peak intensity of Ge decreases.