Gas-dependent photoresponse of SnS nanoparticles-based photodetectors

Abstract

Different gas environments play important roles in the photosensitive properties of SnS nanoparticles based multifunctional devices.

Synthesis and Properties of Tin Sulfide Thin Films from Nanocolloids Prepared by Pulsed Laser Ablation in Liquid

“…The binding energies of S2p 3/2 and S2p 1/2 levels are 161.29 and 162.46eV, respectively,a nd the binding energy difference between the S2p 3/2 and S2p 1/2 levels is 1.17 eV, which are also in good agreement with the binding energies of sulfur in SnS. However, the porous like morphology of SnS is favourable in enhancing the photophysical and gas-sensing properties as reported by Fangyuan Lu et al [18] Even thought he substrate temperature was maintained above the boilingt emperature of the corresponding liquid mediumu sed in PLAL, the existence of small amountso ft he solvento nt he film surfacec annot be neglected.U se of higher substrate temperatures for spray mayl ead to oxidation of the thin films. The corresponding graphsa re presentedi nF igure S3.…”

Facile Formation of Nanodisk‐Shaped Orthorhombic SnS Layers from SnS2 Particles for Photoelectrocatalytic Hydrogen Production

“…This 2D nature of the SnS layer renders only aw eak interaction between neighboring layers via van der Waalsi nteractions, which allows easy separation andfabrication of layered composite structures with highly disparate atomic layerst oc reate aw ide range of van der Waals( vdWs)h eterostructures without any constraints of lattice match and compatibility.T herefore, the processability of SnS combined with its extraordinary physicala nd chemical properties makes it ap erfect model system in exploring new 2D properties. [2][3][4][5][6] Recently,s cattered layerso fS nS on either mica or Si wafer, prepared fromc ommercialS nS powers via av apor phase transportm ethod, have been successfully used in variousa pplications such as the field effect transistors, [14,15] anisotropic field-effect transistors, [5] solid-ionb atteries (chemically derived SnS), [16] near-infraredp hotodetectors, [17] gas dependentp hotodetectors, [18] and anisotropic core-shell photoactive heterostructures. [19] Such diverse applicationso fS nS layers reflect the inherentf unctional richness of the SnS layers such as 2D anisotropic optical, electrical and thermoelectric properties of SnS [5,6,10,20] as has been experimentally determinedf rom the thickness, angle, and temperature-dependent Raman characteristics.…”

Structural characterization of SnS crystals formed by chemical vapour deposition

“…Several groups have previously used TEM to identify the crystal structure of SnS nanoparticles (Lu et al, 2015;Tarkas et al, 2017), nanosheets (Hori et al, 2014;Brent et al, 2015;Yang et al, 2015;Chao et al, 2016), nanorods (Suryawanshi et al, 2014;Chauhan et al, 2015) and micron-sized flakes (Xia et al, 2016;Tian et al, 2017) which were synthesised through various techniques. The TEM characterisation of the SnS nanosheets and flakes have been generally limited to plane view analysis and basic d-spacing measurements in cross section in order to confirm the phase of the material.…”