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Volume 25 - ICOP & ICPET 2019
ICOP & ICPET _ INPC _ ICOFS 2019, 25 - ICOP & ICPET 2019: 465-468 |
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Taheri M, Mohseni armaki S M. Synthesis of Silicon Quantum Dots and its Optical Properties Study for Nano-sensor Applications. ICOP & ICPET _ INPC _ ICOFS 2019; 25 :465-468
URL: http://opsi.ir/article-1-1759-en.html
URL: http://opsi.ir/article-1-1759-en.html
1- Department of Physics, Shahid Beheshti University, Evin, Tehran
Abstract: (1902 Views)
In this work, optical properties of silicon quantum dots in ethanol for biosensor applications has been investigated. A nanosecond pulsed laser ablation method for the synthesis of silicon quantum dots disperse in ethanol with blue photoluminescence is reported. The sample is characterized by UV-visible absorption spectrometer and the crystal structure analyzed by X-ray diffraction. The results of X-ray diffraction pattern have shown the formation of silicon nanocrystal in the colloid. The silicon quantum dots in ethanol exhibits blue emissions in the spectral range of 460-480 nm when excited in the wavelength range of 365-415 nm. In addition, the fluorescence measurement of the colloid exhibits a good photostability and maximum intensity in pH 6 sodium phosphate buffer. The observed emission properties of the silicon quantum dots make it a valuable material for the optical probe in nano-sensor systems.
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