Recrystallization of Si Nanoparticles in Presence of Chalcogens: Improved Electrical and Optical Properties
Abstract
:1. Introduction
2. Materials and Methods
3. Results and Discussion
3.1. Annealing of Nanosilicon with Sulfur
3.2. Annealing of Nanosilicon with Selenium and Tellurium
3.3. Electron Diffraction
3.4. Optical Absorption
3.5. Electrical Properties of Films
3.5.1. Si:S5 Film
3.5.2. Si:Se Film
3.5.3. Si:Te Film
4. Conclusions
Supplementary Materials
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Sample | Initial. S conc., at.% | T, °C | t, h | Presence of Rods * | S conc., at.% before Etching | S conc., at.% after Etching |
---|---|---|---|---|---|---|
Si:S500 | 10 | 500 | 1 | - | 1.54 | 0.60 |
Si:S700 | 10 | 700 | 1 | - | 1.56 | 0.50 |
Si:S900 | 10 | 900 | 1 | + | 0.94 | 0.24 |
Si:S1 | 20 | 800 | 1 | - | 2.31 | 0.21 |
Si:S2 | 20 | 825 | 3 | + | 1.33 | 0.12 |
Si:S3 | 20 | 850 | 1 | + | 2.28 | 0.19 |
Si:S4 | 20 | 850 | 3 | ++ | 5.04 | 0.23 |
Si:S5 | 20 | 850 | 5 | +++ | 1.90 | 0.38 |
Sample | Morphology | X, at.% before Etching | X, at.% after Etching |
---|---|---|---|
Si:S5 | Hexahedral rods | 1.90 | 0.38 |
Si:Se | Faceted crystallites | 1.06 | 0.64 |
Si:Te | Faceted crystallites and tetrahedral rods | 0.60 | 0.59 |
Sample | ω0, rad/s | τ, s | Ne, cm−3 |
---|---|---|---|
Si:S2 | 4.1 × 1015 | 4.1 × 10−16 | 1.7 × 1021 |
Si:S5 | 2.8 × 1015 | 2.1 × 10−16 | 3.4 × 1021 |
Si:Se | 3.5 × 1015 | 1.9 × 10−16 | 6.3 × 1021 |
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Vinokurov, A.; Popelensky, V.; Bubenov, S.; Kononov, N.; Cherednichenko, K.; Kuznetsova, T.; Dorofeev, S. Recrystallization of Si Nanoparticles in Presence of Chalcogens: Improved Electrical and Optical Properties. Materials 2022, 15, 8842. https://doi.org/10.3390/ma15248842
Vinokurov A, Popelensky V, Bubenov S, Kononov N, Cherednichenko K, Kuznetsova T, Dorofeev S. Recrystallization of Si Nanoparticles in Presence of Chalcogens: Improved Electrical and Optical Properties. Materials. 2022; 15(24):8842. https://doi.org/10.3390/ma15248842
Chicago/Turabian StyleVinokurov, Alexander, Vadim Popelensky, Sergei Bubenov, Nikolay Kononov, Kirill Cherednichenko, Tatyana Kuznetsova, and Sergey Dorofeev. 2022. "Recrystallization of Si Nanoparticles in Presence of Chalcogens: Improved Electrical and Optical Properties" Materials 15, no. 24: 8842. https://doi.org/10.3390/ma15248842