Fig. 1: Room-temperature plasticity and TE performance of Bi2Te3-family crystals.

a Schematics illustrating the atomic arrangements in Bi2Te3, Bi2Se3, and Sb2Te3 crystals. b Room-temperature power factor (PF), figure-of-merit (zT), and maximum bending strain (εmax) for Bi2(Te,Se)3 and (Bi,Sb)2Te3 bulk crystals. The PF data for Bi2(Te,Se)3 and (Bi,Sb)2Te3 crystals reported before are also included for comparison31,32.