Heterostructures based on new advanced materials offer a cornerstone for future optoelectronic devices with improved photoelectric performance. Band alignment is crucial understanding the mechanism of charge carrier transportation and interface dynamics in heterostructures. Herein, we grew SnS2/Bi2X3 (X = Se, Te) van der Waals heterostructures by combining physical vapor deposition chemical dep...

Structural phase transitions can be used to alter the properties of a material without adding any additional elements and are therefore of significant technological value. It was found that the hexagonal-SnS2 phase can be transformed into the orthorhombic-SnS phase after an annealing step in an argon atmosphere, and the thus transformed SnS shows enhanced sodium-ion storage performance over tha...

We present an in-depth first-principles study of the lattice dynamics of the tin sulphides SnS2, Pnma and p-cubic SnS and Sn2S3. An analysis of the harmonic phonon dispersion and vibrational density of states reveals phonon bandgaps between lowand high-frequency modes consisting of Sn and S motion, respectively, and evidences a bond-strength hierarchy in the low-dimensional SnS2, Pnma SnS and S...

Precise manipulation of atomic defects is essential for modulating the intrinsic properties two-dimensional (2D) materials. In this study, sulfur (S) atoms are accurately knocked out in 2D basal plane pure tin disulfide (SnS2). By varying annealing temperatures (250–350°C), SnS2 with different S vacancy concentrations (Vs?SnS2) can be obtained. When annealed at 350°C 5 h, vacancies forms single...

Уперше встановлено межі областей склоутворення у квазіпотрійних системах AІ 2S–ВIVS2–СV 2S3 (АI – Cu, Ag; ВIV Ge, Sn, СV As, Sb) на основі результатів рентгенофазового аналізу. Максимальна температура синтезу становила 1100 К із подальшим гартуванням ампул 25-відсотковий водний розчин натрій хлориду з подрібненим льодом. Одержані склоподібні зразки становили темно-сірі та жовто-червоні блискучі...

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Composites of nitrogen-doped reduced graphene oxide (NRGO) and nanocrystalline tin sulfides were synthesized, and their performance as lithium ion battery anodes was evaluated. Following the first cycle the composite consisted of Li2S/LixSn/NRGO. The conductive NRGO cushions the stress associated with the expansion of lithiation of Sn, and the noncycling Li2S increases the residual Coulombic ca...

We present an in-depth first-principles study of the lattice dynamics of the tin sulphides SnS2, Pnma and π-cubic SnS and Sn2S3. An analysis of the harmonic phonon dispersion and vibrational density of states reveals phonon bandgaps between low- and high-frequency modes consisting of Sn and S motion, respectively, and evidences a bond-strength hierarchy in the low-dimensional SnS2, Pnma SnS and...

Two-dimensional porous nanosheet heterostructure materials, which combine the advantages of both architecture and components, are expected to feature a significant photocatalytic performance toward CO2 conversion into useful fuels. Herein, we provide facile strategy for fabricating sulfur-doped C3N4 nanosheets with embedded SnO2-SnS2 nanojunctions (S-C3N4/SnO2-SnS2) via liquid impregnation-pyro...