Figure 5

Typical TEM and HRTEM images of the synthesized polytypic CZTSSe nanocrystals obtained after reaction at different temperatures for 1 h.
(a) and (b) 240°C, (c) and (d) 260°C, (e) and (f) 300°C, (g) and (h) 320°C. The white scale bars are 100 nm and black scale bars are 5 nm. Insets show the model illustration of the polytypic nanocrystal with different phase composition.