Silver Indium Phosphorus Sulfide (AgInP2S6) Powder
High purity AgInP2S6 powder
Used to process quantum dot solutions and nano-plates into few-layer films
Silver indium phosphorus sulfide (AgInP2S6) belongs to the hexachalcogenohypodiphosphates family. AgInP2S6 has a layered structure like most of the other layered materials, i.e. graphite.
AgInP2S6 a typical Transition metal thio/selenophosphates (TPS) with a rhombohedral structure that contains a sulfur framework with the octahedral voids filled by Ag, In, and P–P triangular patterns.
Atomically thin AgInP2S6 layers can be synthesized through a facile probe sonication exfoliation of either bulk crystals or powder.
|Full name||Silver indium phosphorus sulfide|
|Molecular weight||477.03 g/mol|
|Bandgap||Eg =~2.4 eV eV |
|Classification / Family||Metal phosphorus trichalcogenides (MPTs), Hexachalcogenohypodiphosphates, 2D semiconductor Materials, Nano-electronics, Nano-photonics, Transistors, Photovoltaics, Materials science|
|Acquire method||Synthetic - Chemical Vapour Transport (CVT)|
|Electronic properties||2D semiconductor|
|Colour||Silver to dark gray powder|
Bulk AgInP2S6 crystallizes in rhombohedral structure and it is non-centrosymmetric with two non-equivalent packet layers in the unit cell. Both metal Ag and In atoms are coordinated with six S atoms and P atoms are tetrahedral coordinated to form a binuclear [P2S6] 4- cluster which are located in the centre of hexagon composed by alternative three Ag atoms and three In atoms. The metal (Ag and In) layers are sandwiched by two layers of S atoms, while the [P2S6] 4- pairs act as stanchions inside the layer.
In the bulk and multilayer samples, the neighbouring layers are coupled by van der Waals interactions. The [P2S6] dumbbell pairs and Ag atoms stack alternately in the nearby two layers, leading to the AB stacking order of the adjacent layers.
Semiconducting AgInP2S6 is favoured for visible light absorption with an appropriate bandgap structure of ~2.4 eV. Single and quaternary atomically thin AgInP2S6 sheets can be used in applications for photoreduction of CO2 into olefiant hydrocarbon fuels.
Obtained via the CVT method, AgInP2S6 powder with purities of over 99.995% have been achieved.
AgInP2S6 powder is suitable for liquid chemical exfoliation to process AgInP2S6 quantum dot solutions and nano-plates down to few-layer films. High-quality, high-purity AgInP2S6 powder is also used for CV deposition of ultra-thin single or few-layer films.
Literature and Reviews
- Vacancy-defect modulated pathway of photoreduction of CO2 on single atomically thin AgInP2S6 sheets into olefiant gas, W. Gao et al., Nat Commun 12, 4747 (2021); DOI: 10.1038/s41467-021-25068-7.
- Second-harmonic generation in quaternary atomically thin layered AgInP2S6 crystals, X. Wang et al., Appl. Phys. Lett., 109, 123103 (2016); DOI: 10.1063/1.4962956.
- Structural, electronic, vibration and elastic properties of the layered AgInP2S6 semiconducting crystal –DFT approach, T. Babuka et al., RSC Adv., 8, 6965 (2018); DOI: 10.1039/c7ra13519j.
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