Najla. M. Khusayfan, A.F. Qasrawi, Hazem K. Khanfar, Seham R. Alharbi
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Enhanced Optical, Electrical and Dielectric Properties of WO3 Stacks Via Indium Nanosheets
This study investigates the effect of inserting 50 nm and 100 nm indium nanosheets between tungsten oxide layers to create WO3/In/WO3 (WIW) films. Fabricated by vacuum evaporation, these amorphous WIW films showed a 62% reduction in average surface roughness. Indium nanosheets enhanced optical properties, increasing visible and infrared light absorption by 256% at 3.0 eV and 224% at 1.76 eV, while reducing the energy bandgap from 2.94 to 2.11 eV with thicker nanosheets. WIW films exhibited enhanced dielectric and optical conductivity responses leading to an improved terahertz cutoff frequencies values of 1.6–9.6 THz in the light range of 1.13–3.0 eV. Electrical resistivity dropped by two and four orders of magnitude for 50 and 100 nm layers, respectively. These combined improvements make WIW films promising for electro-optical applications.
期刊介绍：
The journal Crystal Research and Technology is a pure online Journal (since 2012).
Crystal Research and Technology is an international journal examining all aspects of research within experimental, industrial, and theoretical crystallography. The journal covers the relevant aspects of
-crystal growth techniques and phenomena (including bulk growth, thin films)
-modern crystalline materials (e.g. smart materials, nanocrystals, quasicrystals, liquid crystals)
-industrial crystallisation
-application of crystals in materials science, electronics, data storage, and optics
-experimental, simulation and theoretical studies of the structural properties of crystals
-crystallographic computing
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