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year 28, Issue 2 (ICOP & ICPET 2022 2022)                   ICOP & ICPET _ INPC _ ICOFS 2022, 28(2): 966-969 | Back to browse issues page

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Dehghan Ghahfarokhi S, Farahmandzadeh F, Molaei M, Alehdaghi H, Karimipour M. Investigation effect of gamma radiation on the optical and structural properties of CdTe / CdSe / CdS core/shell/shell QDs. ICOP & ICPET _ INPC _ ICOFS 2022; 28 (2) :966-969
URL: http://opsi.ir/article-1-2619-en.html
Investigation effect of gamma radiation on the optical and structural properties of CdTe / CdSe / CdS core/shell/shell QDs
Sima Dehghan Ghahfarokhi *1 , Farzad Farahmandzadeh1 , Mehdi Molaei1 , Hassan Alehdaghi2 , Masoud Karimipour1
1- Valiasr university
2- , Hakim Sabzevari university
Abstract:   (677 Views)
 In this research CdTe/CdSe/CdS core/shell/shell QDs were synthesized by a novel and simple photochemical approach. Thioglycolic acid (TGA) was used as simultaneously as both of the capping agent molecule and S2- source for CdS shell growth around CdTe/CdSe QDs. XRD results confirmed successful formation of CdTe/CdSe/CdS core/shell/shell structure. Effect of  60Co gamma irradiation on optical and structural properties of CdTe and CdTe/CdSe/CdS core/shell/shell QDs was investigated. source for CdS shell growth around CdTe/CdSe QDs. The obtained results indicated stability of crystalline structure of QDs after gamma irradiation but PL intensity of the CdTe/CdSe/CdS QDs was decreased gradually after receiving different doses of gamma irradiation with a red shift in PL peak position.  
Keywords: CdTe/CdSe/CdS, QDs, Gamma irradiation, Dosimetry, luminescence
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Type of Study: Experimental | Subject: Special
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