Nano-engineered thin-film thermoelectric materials enable practical solid-state refrigeration

We use controlled hierarchically engineered superlattice structures (CHESS) grown by metal-organic chemical vapor deposition (MOCVD) in the p-type Bi₂Te₃/Sb₂Te₃ materials system and n-type Bi₂Te₃/Sb_2.7Se_0.3 materials system. Figure 1 shows the…