• 文献标题:   Cadmium telluride quantum dots/graphene oxide/poly vinyl acetate (CdTe QDs/GO/PVAc) nanocomposite: a novel sensor for real time gamma radiation detection
  • 文献类型:   Article
  • 作  者:   MEHRABIAN MH, FEIZI S, DEHAGHI SM
  • 作者关键词:   cadmium telluride quantum dot, graphene oxide, poly vinyl acetate, dosimetry, radiation detection
  • 出版物名称:   RADIOCHIMICA ACTA
  • ISSN:   0033-8230
  • 通讯作者地址:   Nucl Sci Technol Res Inst NSTRI
  • 被引频次:   0
  • DOI:   10.1515/ract-2019-3209
  • 出版年:   2020

▎ 摘  要

The design of organic/inorganic nanoparticles hybrids provides the great potential for the fabrication of gamma-ray sensor systems. Herein, structural and dosimetric properties of the gamma irradiated poly vinyl acetate (PVAc) doped with cadmium telluride quantum dots (CdTe QDs) and graphene oxide (GO) nanoflakes have been investigated. Thioglycolic acid (TGA) capped water-soluble CdTe QDs and (GO) nanoflakes are synthesized and characterized. Then, CdTe QDs/GO/PVAc sensors were formed by post-depositing CdTe and GO over polymer matrix. The photophysical interactions between nanoparticles and organic polymer have been investigated using ohmic contact detectors with two gold coated electrodes. Real time dose rate information of the sensors such as sensitivity, repeatability, and the linearity of dose rate response were assessed. A wider photoelectric response range and wider gamma harvesting range were observed in the resultant hybrid gamma sensor at a standard bias voltage with respect to non-hybrid CdTe QDs/PVAc sensors.