Synthesis and characterization of temperature-dependent nanospherical Cu2−xSe thin films for photoelectrochemical cell application

In this investigation, copper selenide (Cu 2− x Se, x  = 0.57) thin films were synthesized employing the environmentally benign self-organized arrested precipitation technique (APT) on the soda-lime glass (SLG) as well as on tin-doped indium oxide (ITO) substrates, varying deposition temperatures of...

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Bibliographic Details
Published in:Journal of materials science. Materials in electronics 2024-10, Vol.35 (28), p.1836, Article 1836
Main Authors: Kalvikatte, Pratik M., Patil, P. R., Mahadik, V. M., Mayanekar, A. A., Dongale, T. D., Mane, R. M., Bhosale, P. N., Khot, Kishorkumar V.
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemistry and Materials Science
Copper selenides
Crystal structure
Electromagnetic absorption
Energy conversion
Indium oxides
Indium tin oxides
Materials Science
Optical and Electronic Materials
Photoelectrochemical devices
Soda-lime glass
Spectrophotometry
Stability augmentation
Substrates
Temperature dependence
Thin films
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Summary:In this investigation, copper selenide (Cu 2− x Se, x  = 0.57) thin films were synthesized employing the environmentally benign self-organized arrested precipitation technique (APT) on the soda-lime glass (SLG) as well as on tin-doped indium oxide (ITO) substrates, varying deposition temperatures of 40 °C, 55 °C, 70 °C. Characterization, encompassing UV–Vis spectrophotometry, X-ray diffraction (XRD), and scanning electron microscopy (SEM) with energy-dispersive spectroscopy (EDS). The results elucidated distinctive attributes of the thin films, having a notably visible light absorption profile in the range of 600–700 nm for all samples and characterized by bandgap energy of 1.59 eV for the sample at 70 °C. The manifestation of a singularly phase-pure cubic crystal structure for temperature of 70 °C and hexagonal for 45 °C and 55 °C temperatures, and the emergence of nanospherical surface morphology. Significantly, the Cu 2− x Se thin films evinced augmented photoelectrochemical (PEC) proficiency, prolonged stability in PEC environments, and exhibited consistent p-type conductivity. Underscoring their prospective utility in energy conversion, particularly in the context of photoelectrochemical cells.
ISSN:0957-4522
1573-482X
DOI:10.1007/s10854-024-13592-3