@article{6a880a39da1c4b7d8f833b0a903ea4d5,
title = "Toppling the Transport Properties with Cationic Overstoichiometry in Thermoelectric Colusite: [Cu26Cr2Ge6](1+delta)S-32",
abstract = "The excellent thermoelectric properties of colusite are known to be closely related to the nature of the cations at the core of the tetrahedral-octahedral complexes. Here, we demonstrate that cation overstoichiometry decreases the carrier concentration and also generates structural disorder, which modify the conduction mechanism in a way that resembles the effect of cation-size mismatch. This functionalization of the {"}Cu26S32{"} conductive network leads to a high figure of merit of 1.0 at 700 K. This study highlights the importance of the cationic arrangement and furthers our understanding on the fascinating transport properties in colusite.",
author = "Gabin Guelou and Marco Fornari",
note = "Funding Information: The authors would like to thank Christelle Bilot and Jer{\^o}me Lecourt for technical support and the financial support of the French Agence Nationale de la Recherche (ANR-15-CE05-0027), FEDER and Region Normandy. K.S. thanks the International Joint Research Program for Innovative Energy Technology funded by the Ministry of Economy, Trade and Industry (METI), Japan. M.F. and A.S. acknowledge collaboration with the AFLOW Consortium ( http://www.aflow.org ) under the sponsorship of DOD-ONR (Grants N000141310635 and N000141512266). Publisher Copyright: {\textcopyright} 2020 American Chemical Society.",
year = "2020",
language = "English",
volume = "3",
pages = "4180--4185",
journal = "ACS Applied Energy Materials",
issn = "2574-0962",
publisher = "ACS APPLIED ENERGY MATERIALS",
number = "5",
}