Scintillating dyes in polymer blends is a common tool used in radiation detection and its modifiability is a desirable attribute for different applications. Through nanocomposite loading, nanocrystals are generally employed to enhance scintillation either through radiative or non-radiative energy transfer. In this work similar methods are pursued with focus in the UV region through UV emitting nanocluster such as ZnO and CdS. A wide range of UV emission nanocrystals are selected and combined with different polymer and dyes demonstrating both quenching and enhancement. Preliminary results show not only dependency of the wavelength but also the polymer medium indicating different energy transfer paths. Compared to samples without nanocrystal the light yield was increased throughout different combinations.
Plastic scintillators such as Polyvinyl Toluene (PVT) are used for radiation detection but due to their poor performance they are not widely implemented. In order to circumnavigate this, dopants are added to enhance scintillation by energy transfer otherwise lost through non-radiative processes. In this work, we exploit the effects of energy transfer through the use of short wavelength emission Cadmium Sulfide Quantum Dots (QD) as the transfer stimulant. Scintillation enhancement was observed as Cadmium Sulfide QD with scintillating dyes are embedded in PVT polymer matrix for beta and gamma radiation. Energy transfer was observed between Quantum Dots, scintillating dye, and the host polymer. Different concentrations of QD and 2,5-diphenyloxazole (PPO) dye are investigated to characterize the energy transfer.