Stability & durability of self-driven photo-detective parameters based on Sn1−βSbβSe (β = 0, 0.05, 0.10, 0.15, 0.20) ternary alloy single crystals. Issue 44 (10th October 2022)

• Record Type: Journal Article
• Authors: Jagani, Hirenkumar Shantilal; Dixit, Vijay; Patel, Abhishek; Gohil, Jagrutiba; Pathak, V. M.
• Is Part Of: RSC advances. Volume 12:Issue 44(2022)
• Page Start: 28693
• Page End: 28706
• Publication Date: 2022-10-10
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/d2ra05492b
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : DVT grown SnSbSe crystals were characterized using E-DAX, XPS, XRD, SEM, HRTEM, UV, PL and Raman characterizations. Photodetection parameters depict the improvement in the stability and durability of device for SbSnSe photodetector compare to SnSe. Abstract : In the present investigation Sn1− β Sb β Se crystals are grown using the direct vapor transport method. The crystals after growth were analyzed by EDAX and XPS to confirm the elemental composition. The surface morphological properties were studied by scanning electron microscope, confirming a flat surface and layered growth of the Sn1− β Sb β Se crystals. The structural properties studied by X-ray diffraction and high-resolution transmission electron microscopy confirm the orthorhombic structure of the grown Sn1− β Sb β Se crystals. The Raman spectroscopic measurements evince the presence of B2g and Ag vibration modes. The PL intensity peak at ∼400 nm to 500 nm confirms the energy band gap. The indirect energy band gap of 1.18 eV was evaluated using Tauc plot by employing UV-visible spectroscopy making it a promising candidate for optoelectronic and photonic applications. The pulse photo response of pure and doped samples was studied under a monochromatic source of wavelength 670 nm and intensity of 30 mW cm −2 at zero biasing voltage firstly on day one and then the same samples were preserved for 50 days and the stability of the photodetectors was observed. Photodetector parameters such as rise time, decay time, photocurrent, responsivity, sensitivity, and detectivity were observed, and evaluated results are presented in this article.