Abstract
An efficient synthesis route for highly luminescent silicon quantum dots is presented. Silicon nanocrystals were synthesized in the gas phase using an argon-silane non-thermal plasma in a continuous flow reactor. Liquid phase surface passivation was used to improve the optical properties and avoid surface oxidation of the silicon quantum dots. Various alkenes, such as octadecene, dodecene and styrene, were covalently bonded to the plasma-produced particles, while strictly avoiding exposure of the raw powder to oxidizing agents. Stable colloidal solutions of silicon quantum dots with ensemble quantum yields between 60% and 70% were achieved.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 3975-3978 |
| Number of pages | 4 |
| Journal | Physica Status Solidi (C) Current Topics in Solid State Physics |
| Volume | 3 |
| Issue number | 11 |
| DOIs | |
| State | Published - Dec 1 2006 |
| Event | 4th International Conference on Semiconductor Quantum Dots, QD2006 - Chamonix-Mont Blanc, France Duration: May 1 2006 → May 5 2006 |
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High efficiency photoluminescence from silicon nanocrystals prepared by plasma synthesis and organic surface passivation. / Mangolini, L.; Jurbergs, D.; Rogojina, E.; Kortshagen, U.
In: Physica Status Solidi (C) Current Topics in Solid State Physics, Vol. 3, No. 11, 01.12.2006, p. 3975-3978.Research output: Contribution to journal › Conference article
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TY - JOUR
T1 - High efficiency photoluminescence from silicon nanocrystals prepared by plasma synthesis and organic surface passivation
AU - Mangolini, L.
AU - Jurbergs, D.
AU - Rogojina, E.
AU - Kortshagen, U.
PY - 2006/12/1
Y1 - 2006/12/1
N2 - An efficient synthesis route for highly luminescent silicon quantum dots is presented. Silicon nanocrystals were synthesized in the gas phase using an argon-silane non-thermal plasma in a continuous flow reactor. Liquid phase surface passivation was used to improve the optical properties and avoid surface oxidation of the silicon quantum dots. Various alkenes, such as octadecene, dodecene and styrene, were covalently bonded to the plasma-produced particles, while strictly avoiding exposure of the raw powder to oxidizing agents. Stable colloidal solutions of silicon quantum dots with ensemble quantum yields between 60% and 70% were achieved.
AB - An efficient synthesis route for highly luminescent silicon quantum dots is presented. Silicon nanocrystals were synthesized in the gas phase using an argon-silane non-thermal plasma in a continuous flow reactor. Liquid phase surface passivation was used to improve the optical properties and avoid surface oxidation of the silicon quantum dots. Various alkenes, such as octadecene, dodecene and styrene, were covalently bonded to the plasma-produced particles, while strictly avoiding exposure of the raw powder to oxidizing agents. Stable colloidal solutions of silicon quantum dots with ensemble quantum yields between 60% and 70% were achieved.
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U2 - 10.1002/pssc.200671606
DO - 10.1002/pssc.200671606
M3 - Conference article
VL - 3
SP - 3975
EP - 3978
JO - Physica Status Solidi (C) Current Topics in Solid State Physics
JF - Physica Status Solidi (C) Current Topics in Solid State Physics
SN - 1862-6351
IS - 11
ER -