Figure 5
From: Dense Ge nanocrystals embedded in TiO2 with exponentially increased photoconduction by field effect

Optical constants n and k of: (a) sample S550 with Ge NCs (for comparison, the inset shows the curves of c-Ge based on tabular data45) and (b) samples Sasd and S700. (c) Tauc plot of α of samples Sasd, S550 and S700.