Rare earth element Pr enables high thermoelectric performance of Cu12Sb4S13 Chen Zhu, Feng Hu, Lei Jiang, Shouxi Jiang, Kun Ding, Jian Shao, Manman Ding and Fali Chong Eur. Phys. J. B, 97 6 (2024) 82 Published online: 21 June 2024 DOI: 10.1140/epjb/s10051-024-00716-1