(color online) (a) DSC curves of CuInTe₂+2.0-wt% ZnO additives before and after hot press process. (b) Highly magnified TEM images of CuInTe₂ matrix with dispersed In₂O₃ nanoparticles. Reproduced from Ref. [25] with permission from Elsevier. (c) Scheme of in-situ displacement reaction. (d) Stepping increase of zT at 823 K in the CuInTe₂ samples by Sb substitution, ZnO adding, and combined Sb substitution, and ZnO adding.^[25,26] Reproduced from Ref. [26] with permission from WILEY-VCH.