Abstract
Nanocrystalline thin films of AgInS2 were synthesized using an inert gas condensation technique. The grazing incident in-plane x-ray diffraction technique was used to detect the crystal structure of the deposited and annealed thin films. The results confirmed that the as-deposited film shows an amorphous behavior and that the annealed film has a single phase crystallized in an orthorhombic structure. The orthorhombic structure and particle size were detected using high-resolution transmission electron microscopy. The particle size (\( P_{\rm{s}}\)) estimated from micrograph images of the nanocrystalline films were increased from 6 nm to 12 nm as the film thickness increased from 11 nm to 110 nm. Accordingly, increasing the film thickness up to 110 nm reflects varying the optical band gap from 2.75 eV to 2.1 eV. The photocurrent measurements were studied where the fast rise and decay of the photocurrent are governed by the recombination mechanism. The electrical conductivity behavior was demonstrated by two transition mechanisms: extrinsic transition for a low-temperature range (300–400 K) and intrinsic transition for the high-temperature region above 400 K.
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The authors would like to thank the National Research Centre for funding this study from internal Project Number (10040206).
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El Zawawi, I.K., Mahdy, M.A. Physical Characterization of Orthorhombic AgInS2 Nanocrystalline Thin Films. J. Electron. Mater. 46, 6430–6439 (2017). https://doi.org/10.1007/s11664-017-5662-y
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DOI: https://doi.org/10.1007/s11664-017-5662-y