Skip to main content

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