Home > Articles > Published articles > Tin Diselenide Molecular Precursor for Solution-Processable Thermoelectric Materials |
Date: | 2018 |
Abstract: | In the present work, we detail a fast and simple solution-based method to synthesize hexagonal SnSe nanoplates (NPLs) and their use to produce crystallographically textured SnSe nanomaterials. We also demonstrate that the same strategy can be used to produce orthorhombic SnSe nanostructures and nanomaterials. NPLs are grown through a screw dislocation-driven mechanism. This mechanism typically results in pyramidal structures, but we demonstrate here that the growth from multiple dislocations results in flower-like structures. Crystallographically textured SnSe bulk nanomaterials obtained from the hot pressing of these SnSe structures display highly anisotropic charge and heat transport properties and thermoelectric (TE) figures of merit limited by relatively low electrical conductivities. To improve this parameter, SnSe NPLs are blended here with metal nanoparticles. The electrical conductivities of the blends are significantly improved with respect to bare SnSe NPLs, what translates into a three-fold increase of the TE Figure of merit, reaching unprecedented ZT values up to 0. 65. |
Grants: | Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-327 Ministerio de Economía y Competitividad ENE2017-85087-C3 Ministerio de Economía y Competitividad SEV-2013-0295 Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-128 |
Rights: | Tots els drets reservats. |
Language: | Anglès |
Document: | Article ; recerca ; Versió sotmesa a revisió |
Subject: | Modulation doping ; Nanomaterial ; Reactive ink ; SnSe2 ; Thermoelectricity |
Published in: | Angewandte Chemie (International ed. Internet), Vol. 57, Issue 52 (December 2018) , p. 17063-17068, ISSN 1521-3773 |
Preprint 7 p, 1.5 MB |