Abstract

We report on inorganic one-dimensional SbPS₄ nanotubes bundles obtained via mechanical exfoliation from bulk crystals. The ability to mechanically exfoliate SbPS₄ nanobundles offers the possibility of applying modern 2D material fabrication techniques to create mixed-dimensional van der Waals heterostructures. We find that SbPS₄ can readily be exfoliated to yield long (> 10 µm) nanobundles with thicknesses that range from 1.3 - 200 nm. We investigated the optical response of semiconducting SbPS₄ nanobundles and discovered that upon excitation with blue light, they emit bright and ultra-broadband red light with a quantum yield similar to that of hBN-encapsulated MoSe2. We discovered that the ultra-broadband red light emission is a result of a large ~1 eV exciton binding energy and a ~200 meV exciton self-trapping energy.

Abstract

We report on inorganic one-dimensional SbPS₄ nanotubes bundles obtained via mechanical exfoliation from bulk crystals. The ability to mechanically exfoliate SbPS₄ nanobundles offers the possibility of applying modern 2D material fabrication techniques to create mixed-dimensional van der Waals heterostructures. We find that SbPS₄ can readily be exfoliated to yield long (> 10 µm) nanobundles with thicknesses that range from 1.3 - 200 nm. We investigated the optical response of semiconducting SbPS₄ nanobundles and discovered that upon excitation with blue light, they emit bright and ultra-broadband red light with a quantum yield similar to that of hBN-encapsulated MoSe2. We discovered that the ultra-broadband red light emission is a result of a large ~1 eV exciton binding energy and a ~200 meV exciton self-trapping energy.

Abstract

We report on inorganic one-dimensional SbPS₄ nanotubes bundles obtained via mechanical exfoliation from bulk crystals. The ability to mechanically exfoliate SbPS₄ nanobundles offers the possibility of applying modern 2D material fabrication techniques to create mixed-dimensional van der Waals heterostructures. We find that SbPS₄ can readily be exfoliated to yield long (> 10 µm) nanobundles with thicknesses that range from 1.3 - 200 nm. We investigated the optical response of semiconducting SbPS₄ nanobundles and discovered that upon excitation with blue light, they emit bright and ultra-broadband red light with a quantum yield similar to that of hBN-encapsulated MoSe2. We discovered that the ultra-broadband red light emission is a result of a large ~1 eV exciton binding energy and a ~200 meV exciton self-trapping energy.

Abstract

We report on inorganic one-dimensional SbPS₄ nanotubes bundles obtained via mechanical exfoliation from bulk crystals. The ability to mechanically exfoliate SbPS₄ nanobundles offers the possibility of applying modern 2D material fabrication techniques to create mixed-dimensional van der Waals heterostructures. We find that SbPS₄ can readily be exfoliated to yield long (> 10 µm) nanobundles with thicknesses that range from 1.3 - 200 nm. We investigated the optical response of semiconducting SbPS₄ nanobundles and discovered that upon excitation with blue light, they emit bright and ultra-broadband red light with a quantum yield similar to that of hBN-encapsulated MoSe2. We discovered that the ultra-broadband red light emission is a result of a large ~1 eV exciton binding energy and a ~200 meV exciton self-trapping energy.