Reply to the 'Comment on "Insight of the preponderant role of the lattice size in the Sn-based colusite for promoting high power factor"' by E. Guilmeau (, 2023, DOI: 10.1039/D2TA03048A)

Recently, E. Guilmeau submitted a comment ( J. Mater. Chem. A , 2023, DOI: 10.1039/D2TA03048A) on our paper on the investigation of the role of the lattice size in the Sn-based colusites for promoting a high power factor ( J. Mater. Chem. A , 2022, DOI: 10.1039/D2TA01210C), expressing a divergent opinion about our experimental as well as theoretical results which evidence a partial relationship between the Seebeck coefficient of Sn-based colusites (Cu 26 V 2 Sn 6 S 32 ) and the structural cell parameters, regardless of the composition/doping or synthesis approach. We want to address the comments he made in this response. In this reply, we stress again the discovery that the lattice size effect is indicated to also contribute to the Seebeck coefficient.