Growth and Characterizations of Rhenium Disulfide (ReS2) Single Crystals

• Published in: Physica status solidi. A, Applications and materials science Applications and materials science, 2021-06, Vol.218 (11), p.n/a
• Main Authors: Ghetiya, Atriy, Chaki, Sunil H., Khimani, Ankurkumar J., Hirpara, Anilkumar B., Kannaujiya, Rohitkumar M., Patel, Shivam, Deshpande, Milind P.
• Format: Article
• Language: English
• Subjects: characterization; chemical vapor transport; Crystal growth; Crystal structure; Crystal surfaces; Differential thermal analysis; Differential thermogravimetric analysis; Diffraction; Electron microscopy; Heating rate; Microscopy; Morphology; ReS2; Rhenium; Single crystals; thermal analysis; Unit cell
• ISSN: 1862-6300; 1862-6319
• DOI: 10.1002/pssa.202000687

Rhenium disulfide (ReS2) single crystals are grown by chemical vapor transport technique. Powder X‐ray diffraction analysis of the single crystals shows them to possess ReS2 phase with triclinic unit cell structure. Energy dispersive analysis of X‐rays shows the crystals to be slightly rich in sulfur and deficient in rhenium. The optical bandgap obtained of the as‐grown single crystals is 1.35 eV. The surface morphology study done by scanning electron microscopy shows that the crystal surface to be flat with layer edges, such observation states that the growth mechanism of crystal have happened by mechanism of sheet spreading. The transmission and diffraction mode electron microscopy shows the single crystals to be layered and crystalline, respectively. The Raman peaks are well assigned to the ReS2. Thermogravimetric and differential thermogravimetric analysis shows the single crystals to disintegrate by two steps. The differential thermal analysis shows that the ReS2 possesses initial endothermic followed by exothermic nature for fast heating rates. In case of a slow heating rate of 10 K min−1, other than endothermic followed by exothermic, the end temperature range shows endothermic nature. The kinetic parameters determined by Kissinger relation shows the single‐crystal samples to disintegrate at a higher temperature range. Rhenium disulfide (ReS2) single crystals are grown by chemical vapor transport (CVT) technique. The grown crystals are characterized for stoichiometry, phase, lattice parameters of the unit cell, surface morphology, optical parameters, Raman modes, thermal parameters, etc. The Kissinger method is used for determining the kinetic parameters of all possible thermal disintegration.