Regular Article - Solid State and Materials
Anisotropic study of ReSe2-based photodetector grown via vapour transport technique
Department of Physics, Sardar Patel University, 388120, Vallabh Vidyanagar, Gujarat, India
2 Department of Paramedical Science, Charotar Institute of Paramedical Science, CHARUSAT, 388421, Changa, India
Accepted: 14 October 2022
Published online: 5 November 2022
Transition metal dichalcogenides (TMDCs) are extensively in demand as photodetectors due to their extraordinary electrical and optical properties. In this work, we have reported the synthesis of high-quality bulk single crystals of rhenium diselenide (ReSe2) by the DVT technique. X-ray diffraction, Raman spectroscopy, and elemental mapping confirmed the crystal structure, crystallinity, and phase singularity of the material. TEM and SEM confirm the crystallinity and layered structure of the grown material. Owing to these unique properties, we have utilized the ReSe2 crystal to construct a high-performance anisotropic photodetector. The crystals’ photodetection capacity was confirmed in terms of typical detector parameters such as responsivity, detectivity, and rise time for white light under different intensities, biasing voltages, and wavelengths. The anisotropy in the properties due to its unique layered structure is also explored here. Observing the encouraging results, ReSe2 is a potential choice in 2D TMDCs for electrical and optoelectronic applications.
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