Photonic crystal with a defect layer of silicon containing polymer nanocomposites as radiation detector.

Abstract

This paper presents a photonic crystal-based gamma radiation detector featuring a defect layer of silicon embedded with polymer nanocomposites. The transfer matrix method is utilized as a computational tool to evaluate the transmittance properties of the proposed detector. The study investigates the effects of cell count and porosity on the detector's performance. The model can accurately and simultaneously distinguish between different gamma radiation doses by observing changes in the refractive index of the active layer. The detector demonstrates high sensitivity, with 0.804 nm/Gy for doses ranging from 0 to 100 Gy and 0.225 nm/Gy for doses between 100 and 200 Gy. The proposed model, incorporating porous silicon and ethylene oxide polymer nanocomposites, exhibits exceptional performance as a gamma radiation sensor.