Title :
Quantum Dot-Organic Polymer Composite Materials for Radiation Detection and Imaging
Author :
Lawrence, William G. ; Thacker, Samta ; Palamakumbura, Senerath ; Riley, Kent J. ; Nagarkar, Vivek V.
Author_Institution :
Radiat. Monitoring Devices, Watertown, MA, USA
Abstract :
Colloidal semiconductor nanocrystals exhibit physical properties that are characteristic of intermediate size scales between molecular states and solid state materials, and are often called quantum dots. Solid state semiconductor materials have been used extensively as scintillation detectors for ionizing radiation. We describe the use of semiconductor quantum dot-organic polymer composites for use as scintillation detectors and report the use of quantum dot-polymer composite thin films for X-ray imaging.
Keywords :
II-VI semiconductors; X-ray imaging; cadmium compounds; fluorescence; nanocomposites; nanofabrication; semiconductor quantum dots; semiconductor thin films; wide band gap semiconductors; CCD camera; CdSe; CdTe; X-ray imaging; X-ray induced luminescence; colloidal semiconductor nanocrystal; emission spectra; emission spectrum; ionizing radiation; laser induced fluorescence; molecular state; optical absorption spectra; organic polymer composite; polymer matrix; polymer thin film; quantum dot morphology; radiation detection; scintillation detector; scintillator fabrication; solid state material; Charge carrier processes; Energy exchange; Optical imaging; Polymers; Quantum dots; Stimulated emission; X-ray imaging; Cadmium selenide; X-ray imaging; cadmium telluride; nanocomposite; polymer; quantum dot; scintillator;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.2011.2178861