Figure 2
From: Phase-pure iron pyrite nanocrystals for low-cost photodetectors
XRD results of the nanocrystals and the corresponding SEM images. (a) XRD results of the nanocrystals synthesized with different [S]/[Fe]: 1:1.5, 1:0.75, 2:1, 2.5:1, 3:1, and 3.75:1. The red diamonds and lines indicate the diffraction peaks of FeS2, the black dots indicate the peaks from iron oxides, and the dark yellow triangles show the peaks for element sulphur. (b)-(g) Corresponding SEM images in high magnification. The inset in (f) is a SEM image of nanocubes. The scale bars are 200 nm.