Jen, I-LunI-LunJenLin, Chia-ShienChia-ShienLinWang, Kuang-KuoKuang-KuoWangHSIN-JAY WU2024-09-182024-09-182023https://www.scopus.com/record/display.uri?eid=2-s2.0-85176509384&origin=resultslisthttps://scholars.lib.ntu.edu.tw/handle/123456789/721149Zinc antimonides, particularly the β-Zn4Sb3 compound, act as prototypes in the early phases of thermoelectric generator (TEG) development. However, their potential applications are constrained by structural instability at elevated temperatures. In this study, introducing a low concentration of aluminum (Al) achieves a highly stable Al-Zn4Sb3, exhibiting an improved peak zT value compared to undoped Zn4Sb3. Notably, a single-leg device utilizing a fully dense Al0.01Zn3.99Sb3 demonstrates an impressive conversion efficiency (η) of 3% even at a temperature difference (ΔT) of 225 K. This result represents an approximately 200% increase compared with the pristine one. The combination of dilute cationic doping and phase diagram engineering solidifies the potential of Zn4Sb3 as an efficient and sustainable green energy device. © 2023 American Chemical Societyconversion efficiencydilute cationic dopingphase diagram engineeringthermoelectric generatorβ-Zn4 Sb3[SDGs]SDG12journal article10.1021/acsami.3c109672-s2.0-85176509384