Facile microwave synthesis of tungsten-doped PbI₂ nanostructures for optoelectronic and radiation detection devices

Facile synthesis of the microwave was applied to assist in synthesizing pure and tungsten-doped lead iodide (W: PbI₂) nanosheets with less than 100 nm thickness. The proposed W-doped PbI₂ nanosheets were subjected to various characterization, including structural, morphological, spectral, optical, dielectric, and radiation studies. SEM and EDX investigations confirmed that the tungsten dopants affect the undoped PbI₂ matrix. The structural morphology from XRD patterns approved the good crystallinity of the prepared W-doped PbI₂ nanostructures. Optical characterizations revealed the energy band structure of the grown materials. The dielectric constant of the W-doped PbI₂ nanostructures varied from 23 to 31, confirming the increasing dielectric trend with increasing W doping concentrations. The Gamma linear absorption coefficient value was found to vary between 9.2 and 15 in case Am-241, suggesting various applications in radiation detectors for the prepared W-doped PbI₂ nanostructured sheets.