Next Article in Journal
Acid Modification of the Unsupported NiMo Catalysts by Y-Zeolite Nanoclusters
Previous Article in Journal
Rapid Removal and Efficient Recovery of Tetracycline Antibiotics in Aqueous Solution Using Layered Double Hydroxide Components in an In Situ-Adsorption Process
Previous Article in Special Issue
Absolute Luminescence Efficiency of Europium-Doped Calcium Fluoride (CaF2:Eu) Single Crystals under X-ray Excitation
Article

Optical Characteristics of ZnCuInS/ZnS (Core/Shell) Nanocrystal Flexible Films Under X-Ray Excitation

1
Department of Medical Physics, Faculty of Medicine, University of Patras, GR-15310 Rion, Greece
2
Department of Biomedical Engineering, Radiation Physics, Materials Technology, and Biomedical Imaging Laboratory, University of West Attica, 122 10 Athens, Greece
3
Department of Biomedical Sciences, University of West Attica, 122 10 Athens, Greece
4
Department of Medical Physics, Faculty of Medicine, University of Thessaly, 41110 Larissa, Greece
*
Author to whom correspondence should be addressed.
Crystals 2019, 9(7), 343; https://doi.org/10.3390/cryst9070343
Received: 6 June 2019 / Revised: 2 July 2019 / Accepted: 3 July 2019 / Published: 4 July 2019
(This article belongs to the Special Issue Single Crystals for Biomedical Applications)
The aim of this article is to evaluate optical characteristics, such as the intrinsic conversion efficiency and the inherent light propagation efficiency of three polymethyl methacrylate (PMMA)/methyl methacrylate (MMA) composite ZnCuInS/ZnS (core/shell) nanocrystal flexible films. The concentrations of these were 100 mg/mL, 150 mg/mL, and 250 mg/mL, respectively. Composite films were prepared by homogeneously diluting dry powder quantum dot (QD) samples in toluene and subsequently mixing these with a PMMA/MMA polymer solution. The absolute luminescence efficiency (AE) of the films was measured using X-ray excitation. A theoretical model describing the optical photon propagation in scintillator materials was used to calculate the fraction of the generated optical photons passed through the different material layers. Finally, the intrinsic conversion efficiency was calculated by considering the QD quantum yield and the optical photon emission spectrum. View Full-Text
Keywords: quantum dots; nanocrystals; ZnCuInS/ZnS; PMMA; luminescence efficiency quantum dots; nanocrystals; ZnCuInS/ZnS; PMMA; luminescence efficiency
Show Figures

Figure 1

MDPI and ACS Style

Saatsakis, G.; Kalyvas, N.; Michail, C.; Ninos, K.; Bakas, A.; Fountzoula, C.; Sianoudis, I.; Karpetas, G.E.; Fountos, G.; Kandarakis, I.; Valais, I.; Panayiotakis, G. Optical Characteristics of ZnCuInS/ZnS (Core/Shell) Nanocrystal Flexible Films Under X-Ray Excitation. Crystals 2019, 9, 343. https://doi.org/10.3390/cryst9070343

AMA Style

Saatsakis G, Kalyvas N, Michail C, Ninos K, Bakas A, Fountzoula C, Sianoudis I, Karpetas GE, Fountos G, Kandarakis I, Valais I, Panayiotakis G. Optical Characteristics of ZnCuInS/ZnS (Core/Shell) Nanocrystal Flexible Films Under X-Ray Excitation. Crystals. 2019; 9(7):343. https://doi.org/10.3390/cryst9070343

Chicago/Turabian Style

Saatsakis, George, Nektarios Kalyvas, Christos Michail, Konstantinos Ninos, Athanasios Bakas, Christina Fountzoula, Ioannis Sianoudis, George E. Karpetas, George Fountos, Ioannis Kandarakis, Ioannis Valais, and George Panayiotakis. 2019. "Optical Characteristics of ZnCuInS/ZnS (Core/Shell) Nanocrystal Flexible Films Under X-Ray Excitation" Crystals 9, no. 7: 343. https://doi.org/10.3390/cryst9070343

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop