Figure 4From: Tuning oxygen impurities and microstructure of nanocrystalline silicon photovoltaic materials through hydrogen dilutionExperimental and fitted Raman spectrum and volume fraction of grain boundaries and hydrogen content. (a) Experimental (open circles) and fitted (solid curve) Raman spectrum of a representative sample with RH = 98.2%. (b) Volume fraction of grain boundaries and hydrogen content as a function of RH.Back to article page