Tin Diselenide Molecular Precursor for Solution-Processable Thermoelectric Materials

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 nano...

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Detalles Bibliográficos
Autores: Zhang, Yu|||0000-0002-0332-0013, Liu, Yu|||0000-0001-7313-6740, Lim, Khak Ho|||0000-0003-3116-8589, Xing, Congcong|||0000-0001-7674-6720, Li, Mengyao|||0000-0002-9082-7938, Zhang, Ting|||0000-0002-0317-9662, Tang, PengYi|||0000-0002-2306-095X, Arbiol i Cobos, Jordi|||0000-0002-0695-1726, Llorca, Jordi|||0000-0002-7447-9582, Ng, Ka Ming, Ibáñez, Maria|||0000-0001-5013-2843, Guardia, Pablo|||0000-0001-9076-4642, Prato, Mirko|||0000-0002-2188-8059, Cadavid, Doris|||0000-0002-1376-6078, Cabot i Codina, Andreu|||0000-0002-7533-3251
Tipo de recurso: artículo
Fecha de publicación:2018
País:España
Institución:Universitat Autònoma de Barcelona
Repositorio:Dipòsit Digital de Documents de la UAB
Idioma:inglés
OAI Identifier:oai:ddd.uab.cat:216231
Acceso en línea:https://ddd.uab.cat/record/216231
https://dx.doi.org/urn:doi:10.1002/anie.201809847
Access Level:acceso abierto
Palabra clave:Modulation doping
Nanomaterial
Reactive ink
SnSe2
Thermoelectricity
Descripción
Sumario: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.

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