Abstract
Indium‐zinc oxide (IZO) nanofiber matrices are synthesized on SiO2‐covered silicon substrates by the electrospinning method. The nanofibers’ dimensions, morphology, and crystalline structure are characterized by scanning electron microscopy, atomic force microscopy, and X‐ray diffraction. The results of studying the electrical properties of nanofibers, as well as their sensitivity to UV radiation depending on the In‐to‐Zn concentration ratio, are presented. It is shown that the highest sensitivity to UV is observed at the indium content of about 50 atomic %. The photocurrent increment with respect to the dark current is more than 4 orders of magnitude. The response and recovery times are 60 and 500 sec, respectively. The results obtained suggest that IZO nanofibers can find application as UV sensors with improved characteristics.
Highlights
Metal oxide nanofibers have lately attracted considerable research interest due to their unique optical and electronic properties and the related applications [1, 2]
We report on the electrospinning synthesis, characterization and electrical properties of Indium-zinc oxide (IZO) nanofibers, and their sensitivity to UV radiation depending on the In-to-Zn concentration ratio
Qualitative phase analysis shows that a polycrystalline phase of hexagonal zinc oxide with the wurtzite structure is formed after annealing. e XRD pattern of In oxide nanofibers corresponds to the cubic In2O3 phase (Figure 4(b)), and sample IZO5 (In/Zn 50/50) represents a mixture of the ZnO and In2O3 phases (Figure 4(c))
Summary
Metal oxide nanofibers have lately attracted considerable research interest due to their unique optical and electronic properties and the related applications [1, 2]. E effects of indium addition on the structural, optical, and electrical properties of the zinc oxide nanofiber matrices have been studied in the work [8]. We report on the electrospinning synthesis, characterization and electrical properties of IZO nanofibers, and their sensitivity to UV radiation depending on the In-to-Zn concentration ratio.
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