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Specifically, self\u2010assembled PbSe dots exhibited attachment to the substrate by &lt;001&gt; planes followed by an interconnection through the {001} facets in plan\u2010view and {110}\/{111} facets in cross\u2010sectional\u2010view, thus forming a cubic superlattice. The thermoelectric properties of the PbSe superlattice thin films are investigated by means of frequency domain thermoreflectance, scanning thermal probe microscopy, and four\u2010probe measurements, and augmented by computational efforts. Thermal conductivity of the superlattice films is measured as low as 0.7\u00a0W\u00a0m<jats:sup>\u22121<\/jats:sup>\u00a0K<jats:sup>\u22121<\/jats:sup> at room temperature due to the developed nanostructure. The low values of electrical conductivity are attributed to the presence of insulating oleate capping ligands at the dots\u2019 surface and the small contact area between the PbSe dots within the superlattice. Experimental efforts aiming at the removal of the oleate ligands are conducted by annealing or molten\u2010salt treatment, and in the latter case, yielded a promising improvement by two orders of magnitude in thermoelectric performance. The result indicates that the straightforward molten\u2010salt treatment is an interesting approach to derive thermoelectric dot superlattice thin films over a centimeter\u2010sized area.<\/jats:p>","DOI":"10.1002\/adfm.202409216","type":"journal-article","created":{"date-parts":[[2024,7,12]],"date-time":"2024-07-12T06:04:46Z","timestamp":1720764286000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":13,"title":["PbSe Quantum Dot Superlattice Thin Films for Thermoelectric Applications"],"prefix":"10.1002","volume":"34","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8018-8653","authenticated-orcid":false,"given":"Viviana","family":"Sousa","sequence":"first","affiliation":[{"name":"Center of Physics of the Universities of Minho and Porto University of Minho  Braga 4710\u2010057 Portugal"},{"name":"International Iberian Nanotechnology Laboratory  Braga 4715\u2010330 Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1003-2781","authenticated-orcid":false,"given":"Masahiro","family":"Goto","sequence":"additional","affiliation":[{"name":"National Institute for Materials Science (NIMS) Research Center for Materials Nanoarchitectonics (MANA)  1\u20101 Namiki Tsukuba 305\u20100044 Japan"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4339-7437","authenticated-orcid":false,"given":"Marcel S.","family":"Claro","sequence":"additional","affiliation":[{"name":"CiQUS, Centro Singular de Investigacion en Quimica Bioloxica e Materiais Moleculares Departamento de Quimica\u2010Fisica Universidade de Santiago de Compostela  Santiago de Compostela 15782 Spain"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5180-2175","authenticated-orcid":false,"given":"Sergey","family":"Pyrlin","sequence":"additional","affiliation":[{"name":"Center of Physics of the Universities of Minho and Porto University of Minho  Braga 4710\u2010057 Portugal"},{"name":"Laboratory of Physics for Materials and Emergent Technologies Lap MET University of Minho  Braga 4710\u2010057 Portugal"}]},{"given":"Luis","family":"Marques","sequence":"additional","affiliation":[{"name":"Center of Physics of the Universities of Minho and Porto University of Minho  Braga 4710\u2010057 Portugal"},{"name":"Laboratory of Physics for Materials and Emergent Technologies Lap MET University of Minho  Braga 4710\u2010057 Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7403-7610","authenticated-orcid":false,"given":"Evgeny B.","family":"Modin","sequence":"additional","affiliation":[{"name":"CIC nanoGUNE  Donostia San Sebastian 20018 Spain"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8998-5018","authenticated-orcid":false,"given":"Oleg I.","family":"Lebedev","sequence":"additional","affiliation":[{"name":"Laboratoire CRISMAT UMR 6508, CNRS\u2010ENSICAEN  Caen 14050 France"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3173-6021","authenticated-orcid":false,"given":"Siavash M.","family":"Alizadeh","sequence":"additional","affiliation":[{"name":"International Iberian Nanotechnology Laboratory  Braga 4715\u2010330 Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0325-691X","authenticated-orcid":false,"given":"C\u00e1tia","family":"Freitas","sequence":"additional","affiliation":[{"name":"International Iberian Nanotechnology Laboratory  Braga 4715\u2010330 Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8198-6024","authenticated-orcid":false,"given":"Eliana M. 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