Tin(II) Sulfide (SnS) Nanosheets by Liquid-Phase Exfoliation of Herzenbergite: IV-VI Main Group Two-Dimensional Atomic Crystals.
The liquid-phase exfoliation of tin(II) sulfide to produce SnS nanosheets in N-methyl-2-pyrrolidone is reported. The material is characterized by Raman spectroscopy, atomic force microscopy, lattice-resolution scanning transmission electron microscope imaging, and energy dispersive X-ray spectrum imaging. Quantum chemical calculations on the optoelectronic characteristics of bulk and 10-layer down to monolayer SnS have been performed using a quantum chemical density functional tight-binding approach. The optical properties of the SnS and centrifugally fractionated SnS nanosheet dispersions were compared to that predicted by theory. Through centrifugation, bilayer SnS nanosheets can be produced size-selectively. The scalable solution processing of semiconductor SnS nanosheets is the key to their commercial exploitation and is potentially an important step toward the realization of a future electronics industry based on two-dimensional materials.
Jack R
JR
Brent
David J
DJ
Lewis
Theoretische Chemie, Technische Universität Dresden , 01069 Dresden, Germany.
Tommy
T
Lorenz
Edward A
EA
Lewis
Nicky
N
Savjani
Sarah J
SJ
Haigh
Theoretische Chemie, Technische Universität Dresden , 01069 Dresden, Germany.
Gotthard
G
Seifert
Brian
B
Derby
Paul
P
O'Brien