Colloidal 2D Lead Chalcogenide Nanocrystals: Synthetic Strategies, Optical Properties, and Applications
Abstract
:1. Introduction
2. Synthesis Strategies
3. Optical Properties
Original Name | Ref. | PL Peak Position (eV) | FWHM (meV) | PLQY (%) | PL Lifetime (ns) | Thickness | Lateral Sizes (nm) | Crystal Structure |
---|---|---|---|---|---|---|---|---|
PbSe NPls | [32] | 0.85–1.25 | 100–200 | 37 | 1200 | 0.8 ± 0.1 nm | 3–6.4 | |
PbSe NPls | [22] | 0.8–0.93 | 80–240 | 15 | 700–2700 | 3–6 ML | ∼10–30 | rock salt |
PbSe NPls | [40] | 1.02 | 207 | 4 ML | ∼15 × 50 | rock salt | ||
PbS NRs | [21] | 0.69–1.13 | 130–180 | 34 | 96–372 | 1.4–2.8 nm | 20 × 50 | rock salt |
PbS NSs | [42] | 3 | 113 | <5 nm | >1000 | zinc blend | ||
PbS NPls | [28] | 1.66–1.69 | 106–156 | 59 to 10 | 1.8–2.3 nm | 3.5–21 | ortho-rhombic | |
PbSe NPls | [72] | 0.95 | 108 | 600 | 5 ML | 28 × 15 | ||
PbS NPls | [76] | 1.69 | ~122 | 1.8–2.3 nm | 47.1 ± 6.5 | ortho-rhombic | ||
PbS NPls | [45] | 1.73 | 142 | 1.4/19.4 | 1–2 nm | 7 × 10 | rock salt | |
PbS NSs | [46] | 0.62–0.84 | 1.2–4.6 nm | >1000 | rock salt | |||
PbSe NPls | [25] | ∼1.13 | ∼180 | ∼0.1 | ∼2 nm | ∼30 | rock salt | |
PbSe NPls | [33] | 1.39 | 18–64 | ∼2000 | 0.8 ± 0.1 nm | 2.7 × 4.9 | rock salt | |
PbS/CdS Core/Shell NSs | [67] | 0.75, 0.85 after CE | ∼120 | 3.3 ± 0.1 nm, 2.1 nm after CE | >100 | |||
PbS NSs | [27] | ∼1.08 | ∼120 | 1.2 ± 0.3 nm | ∼180 × 35 | rock-salt | ||
PbS NSs | [70] | 0.6 to 1 | ∼70 | 4.7 to 1.2 nm | ∼20 × 20 | |||
PbSe1−xSx NPls | [34] | from 0.9 to 1.05 | >200 | 60 | 1500 | ∼2 nm | 4–6 | rock salt |
PbS NSs | [49] | 0.62–0.73 | 8–12 ML | 100 × 100 | ||||
PbS and PbS/CdS NSs | [31] | 0.75 to 0.86 | 6/11 | 40/190 | 2.0 ± 0.3 to 3.6 ± 0.2 nm | 200 × 20/200 × 50/200 × 100 | ||
QDs | Ref. | PL Peak position (eV) | FWHM (meV) | PLQY (%) | Decay Time (ns) | Size (nm) | Crystal Structure | |
PbSe QD single | [77] | 1.55 | 100 | 30 | n/a | ~3 | Rock salt | |
PbS QD ensemble | [78] | 0.65–1.3 | 5-50 | n/a | n/a | Rock salt | ||
PbS QD ensemble | [79] | 0.91 | 105 | n/a | 2.6 | Rock salt |
4. Applications
5. Conclusions and Outlook
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Original Name | Ref. | Synthesis Method | Thickness | Lateral Sizes, nm | Crystal Structure |
---|---|---|---|---|---|
PbS NPls | [38] | CE (PbO, OA, 100 °C) from CuS | 5 nm | 40 | rock salt |
PbSe NPls | [32] | Direct (Pb(OA)2, HOA, 0 °C) | 0.8 ± 0.1 nm | 3–6.4 | |
PbS NSs | [39] | Direct (photochemical) | 1.4 nm | >200 | |
PbSe NPls | [22] | CE (PbBr2, OlAm, 80 °C) from CdSe | 3–6 ML | ∼10–30 | rock salt |
PbSe NPls | [40] | CE + ligand exchange (PbI2 and NH4I) from CdSe | 4 ML | ∼15 × 50 | rock salt |
PbS NRs | [21] | Direct (PbO, OA, thioacetamide, DMF 100 °C) | 1.4–2.8 nm | 20 × 50 | rock salt |
Biconcave PbS NPls | [41] | CE from Cu1.94S | ∼2.5 nm | ∼25 | rock salt |
PbS NSs | [42] | Direct (Pb(OAc)2, thiourea, sodium dodecyl sulfate, NaOH, 60 °C) | <5 nm | >1000 | zinc blend |
PbS NPls | [28] | Single molecule precursor (Chugaev reaction with lead octadecyl xanthate, TOA, 80–90 °C) | 1.8–2.3 nm | 3.5–21 | orthorhombic |
PbSe NSs | [43] | Direct (PbCl2, selenium powder, 220 °C) | >100 | ||
PbS NSs | [44] | Direct (thioacetamide, DMF, TOP, PbOAc, OA) | 4, 6, 16, 23 nm | >100 | rock salt |
PbS NPls | [45] | Direct (lead oleate, octylamine, thiourea, OA, room temperature) | 1–2 nm | 7 × 10 | rock salt |
PbS NPls | [37] | Liquid-phase exfoliation | 3.7 ± 0.9 nm | 11.2 ± 1.7 | |
PbS NPls | [36] | CE (lead oleate) from Cu2S | ~3.5 nm | ~120–150 | |
PbS NSs | [20] | Oriented attachment | 2.2 nm | >200 | rock salt |
PbS NSs | [46] | Oriented attachment | 1.2–4.6 nm | >1000 | rock salt |
PbSe NPls | [25] | Oriented attachment (PbCl2 and Se powder react in a mixture of alkyl amines) | ∼2 nm | rock salt | |
PbS NSs | [27] | Single molecule precursor (Pb(SCN)2, ODE, OA, 165 °C) | 1.2 ± 0.3 nm | ∼35–180 | orthorhombic/rock salt |
PbSe1−xSx NPls | [34] | CE (var. PbCl2, PbBr2, PbI2, Pb(oleate)2) from CdSe1−xSx | ∼2 nm | 4–6 | rock salt |
PbS NSs | [47] | Coalescence of PbS nanowires | 1.8 nm | 200-20000 | |
PbSe NC | [26] | Direct (PbO, OA, Se, TOP, 130 °C) | 4.3 ± 0.5 nm | 200 | |
PbSe/PbS NSs | [48] | Direct (one pot autoclave) | 10–30 nm | 250–350 | |
PbS NSs | [49] | Oriented attachment (PbO modification) | 8–12 ML | 100 × 100 | |
PbS and PbS/CdS NSs | [31] | Direct ((PbO) and bis(trimethylsilyl)sulfide, 90 °C) | 2.0 ± 0.3/3.6 ± 0.2 nm | 200 × 20, 200 × 50, 200 × 100 | |
2D PbS NC | [30] | Single molecule (lead hexadecyl xanthate and TOA at 60 °C) | ∼2 nm | 180 × 40 | rocksalt |
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Babaev, A.A.; Skurlov, I.D.; Timkina, Y.A.; Fedorov, A.V. Colloidal 2D Lead Chalcogenide Nanocrystals: Synthetic Strategies, Optical Properties, and Applications. Nanomaterials 2023, 13, 1797. https://doi.org/10.3390/nano13111797
Babaev AA, Skurlov ID, Timkina YA, Fedorov AV. Colloidal 2D Lead Chalcogenide Nanocrystals: Synthetic Strategies, Optical Properties, and Applications. Nanomaterials. 2023; 13(11):1797. https://doi.org/10.3390/nano13111797
Chicago/Turabian StyleBabaev, Anton A., Ivan D. Skurlov, Yulia A. Timkina, and Anatoly V. Fedorov. 2023. "Colloidal 2D Lead Chalcogenide Nanocrystals: Synthetic Strategies, Optical Properties, and Applications" Nanomaterials 13, no. 11: 1797. https://doi.org/10.3390/nano13111797