Atmospheric pressure chemical vapor deposition growth of vertically aligned SnS2 and SnSe2 nanosheets

Sierra-Castillo, Ayrton ; Haye, Emile ; Acosta, Selene ; Arenal, Raul ; Bittencourt, Carla ; Colomer, Jean-François

Resumen: Laminated metal dichalcogenides are candidates for different potential applications ranging from catalysis to nanoelectronics. However, efforts are still needed to optimize synthesis methods aiming to control the number of layers, morphology, and crystallinity, parameters that govern the properties of the synthesized materials. Another important parameter is the thickness and the length of the samples with the possibility of large-scale growth of target homogeneous materials. Here, we report a chemical vapor deposition method at atmospheric pressure to produce vertically aligned tin dichalcogenide based-materials. Tin disulfide (SnS2) and tin diselenide (SnSe2) vertically aligned nanosheets have been synthesized and characterized by different methods showing their crystallinity and purity. Homogenous crystalline 2H-phase SnS2 nanosheets with high purity were synthesized with vertical orientation on substrates; sulfur vacancies were observed at the edges of the sheets. Similarly, in the crystalline 2H phase SnSe2 nanosheets selenium vacancies were observed at the edges. Moreover, these nanosheets are larger than the SnS2 nanosheets, show lower nanosheet homogeneity on substrates and contamination with selenium atoms from the synthesis was observed. The synthesized nanomaterials are interesting in various applications where the edge accessibility and/or directionality of the nanosheets play a major role as for example in gas sensing or field emission.

Idioma: Inglés

DOI: 10.1039/d1ra05672g

Año: 2021

Publicado en: RSC Advances 11, 58 (2021), 36483-36493
ISSN: 2046-2069

Factor impacto JCR: 4.036 (2021)

Categ. JCR: CHEMISTRY, MULTIDISCIPLINARY rank: 75 / 179 = 0.419 (2021) - Q2 - T2

Factor impacto CITESCORE: 5.9 - Chemical Engineering (Q2)

Factor impacto SCIMAGO: 0.667 - Chemistry (miscellaneous) (Q1) - Chemical Engineering (miscellaneous) (Q1)

Financiación: info:eu-repo/grantAgreement/ES/DGA/E13-17R
Financiación: info:eu-repo/grantAgreement/EC/H2020/823717/EU/Enabling Science and Technology through European Electron Microscopy/ESTEEM3
Financiación: info:eu-repo/grantAgreement/EC/H2020/881603/EU/Graphene Flagship Core Project 3/GrapheneCore3
Financiación: info:eu-repo/grantAgreement/ES/MINECO-AEI-FEDER/PID2019-104739GB-I00-AEI-10.13039-501100011033

Tipo y forma: Artículo (Versión definitiva)