Influence of Doping on the Structural, Optical, Thermal, NLO and Dielectric Properties of L-Histidine Tetrafluoro Borate Crystal

Abstract

Since amino acids are naturally biocompatible, they can be used in a variety of biological and biomedical settings, such as medication delivery systems, implanted devices, and biosensors. Amino acid-based crystals can be incorporated into microelectronic devices to improve their biocompatibility and lower the possibility of adverse impacts when interacting with biological systems. In our present study, we made an attempt to grow pure and SrCl₂, CdCl₂ doped L-Histidine Tetra Fluoro Boarate (L-HTFB), and semi organic single crystal via simple solution growth technique. The crystals were subjected to structural, optical, thermal, NLO and electrical analysis. Structural analysis evident that SrCl₂adition in L-HTFB crystal lattice induce a phase transition from monoclinic to orthorhombic system, whereas cadmium chloride induce only volume expansion of L-HTFB lattice. TG/DTA thermograms elucidate the enhanced stability with CdCl₂ doping whereas SrCl₂ lower the thermal stability. Reduction in optical bandgap and high transparency in the entire visible region of the doped sample suggests the use of doped crystals for opto-electronic devices. Also dielectric analysis promises the role of SrCl₂ doped L-HTFB single crystals with high transparency in the visible region, for the development of advanced devices for laser systems, electro-optic modulation, energy storage, sensing applications