Silicon quantum dot

Silicon quantum dots are metal-free biologically compatible quantum dots with photoluminescence emission maxima that are tunable through the visible to near-infrared spectral regions. These quantum dots have unique properties arising from their indirect band gap, including long-lived luminescent excited-states and large Stokes shifts. A variety of disproportionation,[1] pyrolysis,[2] and solution protocols[3][4] have been used to prepare silicon quantum dots, however it is important to note that some solution-based protocols for preparing luminescent silicon quantum dots actually yield carbon quantum dots instead of the reported silicon.[5][6] The unique properties of silicon quantum dots lend themselves to an array of potential applications: biological imaging, luminescent solar concentrators, light emitting diodes, sensors, and lithium-ion battery anodes.

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  2. ^ Kortshagen, Uwe R.; Sankaran, R. Mohan; Pereira, Rui N.; Girshick, Steven L.; Wu, Jeslin J.; Aydil, Eray S. (2016-09-28). "Nonthermal Plasma Synthesis of Nanocrystals: Fundamental Principles, Materials, and Applications". Chemical Reviews. 116 (18): 11061–11127. doi:10.1021/acs.chemrev.6b00039. ISSN 0009-2665. PMID 27550744.
  3. ^ Shen, T. D.; Koch, C. C.; McCormick, T. L.; Nemanich, R. J.; Huang, J. Y.; Huang, J. G. (January 1995). "The structure and property characteristics of amorphous/nanocrystalline silicon produced by ball milling". Journal of Materials Research. 10 (1): 139–148. Bibcode:1995JMatR..10..139S. doi:10.1557/JMR.1995.0139. ISSN 2044-5326. S2CID 137024851.
  4. ^ Tan, Dezhi; Ma, Zhijun; Xu, Beibei; Dai, Ye; Ma, Guohong; He, Min; Jin, Zuanming; Qiu, Jianrong (2011-11-11). "Surface passivated silicon nanocrystals with stable luminescence synthesized by femtosecond laser ablation in solution". Physical Chemistry Chemical Physics. 13 (45): 20255–20261. Bibcode:2011PCCP...1320255T. doi:10.1039/C1CP21366K. ISSN 1463-9084. PMID 21993573.
  5. ^ Oliinyk, Bohdan V.; Korytko, Dmytro; Lysenko, Vladimir; Alekseev, Sergei (2019-09-24). "Are Fluorescent Silicon Nanoparticles Formed in a One-Pot Aqueous Synthesis?". Chemistry of Materials. 31 (18): 7167–7172. doi:10.1021/acs.chemmater.9b01067. ISSN 0897-4756. S2CID 198369601.
  6. ^ Wilbrink, Jonathan L.; Huang, Chia-Ching; Dohnalova, Katerina; Paulusse, Jos M. J. (2020-06-24). "Critical assessment of wet-chemical oxidation synthesis of silicon quantum dots". Faraday Discussions. 222: 149–165. Bibcode:2020FaDi..222..149W. doi:10.1039/C9FD00099B. ISSN 1364-5498. PMID 32104860. S2CID 209705531.