Table 1 Summary of MWIR-absorbing CQD syntheses
From: Colloidal quantum dots for thermal infrared sensing and imaging
Material | Precursor | Ligands | Solvent | Reaction conditions (°C) | Particle size (nm) | Absorption (µm) | Comments |
|---|---|---|---|---|---|---|---|
HgTe [19] | C4H6O4Hg/TOP:Te | DDT | Butanol | 0 to 90 | 7–11 ± 3 | 3–5 | Aggregated |
HgTe [20] | HgCl2/TOP:Te | DDT | Oleylamine | 60 to 100 | 5–15 ± 2 | 1.3–5 | Non-aggregated |
HgTe [31] | HgCl2/TOP:Te | DDT/DDAB | ODA/Oleylamine | 60 to 120 | 5–20 | 3–8 | Post synthesis re-growth |
HgTe [39] | HgCl2/TMS:Te | Oleylamine | Oleylamine | 60 to 100 | 5–12 | 1.5–6 | Non-thiol ligands |
HgTe [40] | HgX2 (X = Cl, Br, or I)/TOP:Te | Oleylamine | Oleylamine | 120 to 340 | 5–200 | 2–65 | Largest absorption range |
HgSe [44] | HgCl2/selenourea | DDT/TOP | Oleylamine | 110 | 5–7 | 3–5 | Initial study |
HgSe [42] | Hg oleate/SeS2 | DDT | Oleylamine | 60 to 110 | 6–12 | 3–20 | Extended to 10 g yield |
HgSe [40] | HgX2 (X = Cl, Br, or I)/NaBH4 reduced Se | Oleylamine | Oleylamine | 120 to 340 | 5–200 | 2–65 | Largest absorption range |
HgS [53] | HgCl2/thioacetamide | DDT/Oleylamine | Oleylamine | 30 | 4–14 | 3–5 | Post synthesis re-growth |
HgS [16] | HgCl2/(NH4)2S | DDT/Oleylamine | Oleylamine/TOP | 80 | 3–15 | 3–10 | Immiscible solvents |
HgS [40] | HgX2 (X = Cl, Br, or I)/elemental S | Oleylamine | Oleylamine | 120 to 340 | 5–200 | 2–65 | Largest absorption range |
Ag2Se [57] | AgNO3/TOP:Se | Oleylamine/TOP | OA, ODA, ODE | 160 | 3–8 | 3–5 | Monodisperse particles |
Ag2Se [56] | AgNO3 or AgCl/TOP:Se | Oleylamine/TOP | Oleylamine, TOPO | 160 | 3–10 | 1–7 | Largest absorption range |