Observation of negative photoresponse in joule-heated Au/Cu2SnS3 ternary chalcogenide thin film deposited by low energy pulsed laser deposition

Journal article (2022)

Authors

Mohamed A. Basyooni-M.Kabatas Selçuk University, Necmettin Erbakan University
Walid Belaid University of Sidi Mohamed Ben Abdullah, Selçuk University
Amina Houimi Selçuk University
Shrouk E. Zaki Necmettin Erbakan University, Selçuk University
Yasin Ramazan Eker Necmettin Erbakan University
Serap Yiğit Gezgin Selçuk University
Hamdi Şükür Kılıç Selçuk University
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Published Date

2022

Language

English

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Abstract

Gold (Au) nanoparticles trapped within Cu2SnS3 (CTS) thin films were effectively deposited on a low-cost glass substrate using a simple pulsed laser deposition of 15 mJ for 5 ns at a 10 Hz repetition rate. The film's structural, morphological, topography, optical, and optoelectronic properties were investigated. Highly crystalline ternary chalcogenide CTS with tetragonal symmetry and 17 nm grain size is prepared. The 110 Ω resistivity of the thin film increases up to 125 Ω indicating a negative photoresponse under visible light excitation. The decrease in the photocurrent is also observed with Cu2SnS3/Au/Cu2SnS3 sandwich ternary chalcogenide structure at resistivities values from 31 to 35 Ω and a Joule effect influence the presence of plasmonic Au nanoparticle interlayers involved a lower phonon disorder given a higher photoresponse effect as predicted from Urbach energy.