Figure 3From: Silicon quantum dot superlattice solar cell structure including silicon nanocrystals in a photogeneration layerThe Raman spectra of the Si-QDSLs with several CO 2 /MMS flow rate ratios. (a) CO2MMS = 0. (b) CO2MMS = 0.3. (c) CO2MMS = 1.5. (d) CO2MMS = 3.Back to article page