Figure 3
From: Comparison of the Optical Properties of Graphene and Alkyl-terminated Si and Ge Quantum Dots
Photoluminescence quantum yield. The absolute PL QY as a function of energy for the GQDs (black), C-Si (green) and C-Ge (blue) QDs. Where a QY of ~5.5% is observed for the GQDs and the C-Si QDs, that of the C-Ge QDs is much lower (~1%). All data points follow the same increasing and decreasing trend with excitation energy. The error bars represent the statistical error as caused by fluctuations of the lamp intensity used as excitation source.
