Study of Substrate Temperatures Effects on the Properties of Ultrasonically Sprayed SnS₂ Thin Films

Abstract:

Tin disulfide (SnS₂) thin films have drawn worldwide attention because of their outstanding performance and earth-abundant constituents. However, problems such as coexistence of complex secondary phases (SnS, Sn₂S₃), the band tailing issue, and bulk defects need to be addressed for further efficiency improvement. In this regard, the present work is intended for the treatment of one of these problems. Herein, a single phase SnS₂ has been obtained using an ultrasonic spray pyrolysis method. which is confirmed by X-ray diffraction (XRD) and energy dispersive X-rays (EDXs) characterization techniques. The substrate temperatures (Ts) were increased from 250 °C to 450 °C, and this significantly improved the film's characteristics, which varied from an amorphous phase and a mixture of crystalline phases, SnS₂ and SnS (for the films obtained at Ts = 250 and 300 °C) to a SnS₂ pure phase with a hexagonal structure (for Ts ≥ 350 °C). The morphological, optical, and electrical properties of SnS₂ films are greatly improved by temperature increases too, especially for the film obtained at 450 °C. This suggests that there are opportunities for further efficiency by using the as-deposited SnS₂ thin film at 450 °C.

• Periodical: Journal of Nano Research (Volume 77)
• Pages: 105-118
• DOI: https://doi.org/10.4028/p-2rx1mg
• Online since: March 2023
• Authors: Zakaria Hadef*, Kenza Kamli, Beddiaf Zaidi, Salim Boulkhessaim, Baghdadi Chouial
• Keywords: Optoelectronic Properties, Spray Pyrolysis, Thin Films, Tin Disulfide

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