2019
DOI: 10.1016/j.mssp.2018.10.025
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Passivating effect of ternary alloyed AgZnSe shell layer on the structural and luminescent properties of CdS quantum dots

Abstract: The surface passivation of luminescent CdS quantum dots (QDs) via epitaxial overgrowth of new alloyed ternary AgZnSe shell layer is reported here. Two synthetic fabrication strategies were used to tune the optical properties of CdS/AgZnSe core/alloyed shell QDs across the visible region. Transmission electron microscopy, powder X-ray diffraction, Raman, UV/vis and fluorescence spectrophotometric techniques were used to characterize the nanocrystals. Analysis of the internal structure of the QDs revealed that h… Show more

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Cited by 8 publications
(2 citation statements)
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“…The importance of quantum dots as semiconductor gates is that the electrical conductivity of these materials can be changed by external stimuli, such as electric fields or light radiation, to the extent that they switch from being non-conducting to conducting and acting as switches. Compared to real atoms, semiconductor quantum dots have the unique feature that the number of free electrons can be changed using external instruments [ 29 , 30 ]. This simple method creates artificial atoms with 3, 2, 1, or more electrons.…”
Section: The Chemistry Of Semiconductor Qds Carbon Qds and Graphene Q...mentioning
confidence: 99%
“…The importance of quantum dots as semiconductor gates is that the electrical conductivity of these materials can be changed by external stimuli, such as electric fields or light radiation, to the extent that they switch from being non-conducting to conducting and acting as switches. Compared to real atoms, semiconductor quantum dots have the unique feature that the number of free electrons can be changed using external instruments [ 29 , 30 ]. This simple method creates artificial atoms with 3, 2, 1, or more electrons.…”
Section: The Chemistry Of Semiconductor Qds Carbon Qds and Graphene Q...mentioning
confidence: 99%
“…QDs .ODRHO(λexc) .n RHO. OD QDs (λex) .n represents the fluorescence quantum yield of the QDs, Φ RHO F represents the fluorescence quantum yield of rhodamine 6 G (Φ = 0.95) which was used as the reference standard[63], F QDs and F RHO represents the integrated sum of the fluorescence intensity of the QDs and rhodamine standard, OD RHO(λexc) and OD QDs (λexc) represents the absorbances of the rhodamine standard and QDs, while n 2…”
mentioning
confidence: 99%