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Volume 24 -                   ICOP & ICPET _ INPC _ ICOFS 2018, 24 - : 545-548 | Back to browse issues page

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Karimi S, Zare H, Fazaeli Y. Photostability of CdTe/CdS Core/Shell Quantum Dots. ICOP & ICPET _ INPC _ ICOFS 2018; 24 :545-548
URL: http://opsi.ir/article-1-1645-en.html
Photostability of CdTe/CdS Core/Shell Quantum Dots
Shokufeh Karimi *1 , Hakimeh Zare1 , Yousef Fazaeli2
1- Department of Physics, Yazd University
2- Radiation Application Research School, Nuclear Science and Technology Research Institute
Abstract:   (2302 Views)

Thioglycolic acid stabilized CdTe/CdS core/shell quantum dots were synthesized in an aqueous solution. The photostability of the CdTe/CdS core/shell quantum dots to UV irradiation is investigated. The optical spectra were measured after different intervals of irradiation time. The irradiation led to an improvement of the quantum yield of quantum dots. With extending of the irradiation time (18 h), the CdTe quantum dots aggregated, but CdTe/CdS core/shell quantum dots were stable. Therefore, the presence of CdS shell on the surface of quantum dots increases their photostability. The high photostability of QDs is important in biology applications.

Keywords: Quantum dots, CdTe/CdS, Core/shell structure, Aqueous synthesis, Photostability
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Type of Study: Research | Subject: Special
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