Magic-Sized Cd₃P₂ II−V Nanoparticles Exhibiting Bandgap Photoemission

Abstract

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Synthesis of Cadmium Arsenide Quantum Dots Luminescent in the Infrared

“…Reports of the synthesis of II-V semiconductor nanocrystals have appeared previously, [19][20][21][22][23][24] but to our knowledge, the only report of the preparation of Cd 3 As 2 QDs used an aqueous method involving arsine gas that produced a solution with absorption and emission features in the visible and fluorescence quantum yields (QY) <5%. 23 Our approach was inspired by previous reports of the synthesis of Cd 3 P 2 QDs from cadmium(II) oleate and .…”

Room‐Temperature Synthesis of Air‐Stable and Size‐Tunable Luminescent ZnS‐Coated Cd3P2 Nanocrystals with High Quantum Yields

“…[3] Surprisingly little research on synthetic strategies has been performed, leading, until recently, to limited sized nanocrystals (NCs; 2 to 3 nm) and incomplete optical characterizations or poor properties. [4][5][6][7] In 2010, both Peng et al [8] and Hickey et al, [9] successfully obtained Cd 3 P 2 NCs of controllable sizes spanning the spectral range between 500 and 1500 nm. In both cases, the synthesis relies on the same system of reactants (CdO, oleic acid (OA) and tris(trimethylsilyl)phosphine ((TMS) 3 P) in the presence or not of additional surfactants (oleylamine and trioctylphosphine), in octadecene (ODE).…”

“…Yu et al mentioned this issue in 2009, [7] when preparing the more soluble Cd(OAc)(OA) at 120 8C as a precursor of Cd 3 P 2 NCs, unfortunately the asprepared QDs showed very poor QYs. [7] The design of highly soluble precursors appears thus to be of central importance.…”

“…Yu et al mentioned this issue in 2009, [7] when preparing the more soluble Cd(OAc)(OA) at 120 8C as a precursor of Cd 3 P 2 NCs, unfortunately the asprepared QDs showed very poor QYs. [7] The design of highly soluble precursors appears thus to be of central importance. Therefore, we have prepared, at room temperature, a new and straightforward Cd precursor, Cd(OAc) 2 (OAm) 2 (Octylamine = OAm), which meets the reactivity and the solubility requirements (highly soluble in apolar solvents such as toluene).…”

Room‐Temperature Synthesis of Air‐Stable and Size‐Tunable Luminescent ZnS‐Coated Cd3P2 Nanocrystals with High Quantum Yields

“…2 Cadmium phosphide, in particular, has a great potential with a band gap of 0.55 eV and a large excitonic radius of 18 nm 3. Surprisingly little research on synthetic strategies has been performed, leading, until recently, to limited sized nanocrystals (NCs; 2 to 3 nm) and incomplete optical characterizations or poor properties 4–7. In 2010, both Peng et al 8.…”