Optical, thermal and electrical properties of pure and doped bis-thiourea cadmium formate (BTCF) crystal

Abstract

A glycine doped bis-thiourea cadmium formate (BTCF) crystal has been grown by a slow solution evaporation technique. The shifts in vibrational frequencies of different functional groups of BTCF were identified by Fourier transform infrared (FT-IR) spectral analysis. UVvisible studies were employed to assess the optical transparency of pure and doped BTCF crystals. The optical band gap of doped BTCF is found to be 5.16 eV. The optical constants, refractive index, reflectance, and optical conductivity have been evaluated, using the transmission data. The dielectric characteristics of pure and doped BTCF were investigated by employing dielectric studies. The decomposition temperature of pure and doped BTCF crystals was determined by using thermogravimetric analysis. The encouraging third-order nonlinear optical properties of pure and doped BTCF crystals were examined by employing the Z-scan technique at 632.8 nm.

Dielectric, etching and Z-scan studies of glycine doped potassium thiourea chloride crystal

“…In past few decades thiourea based nonlinear optical (NLO) metal complex crystals have drawn large attention due to combined benefit of organic and inorganic constituents, which rapidly enhanced the demand of thiourea metal complex (TMC) crystals for industrial applications in photonics, laser frequency conversion, signal modeling and optoelectronics devices [1,2]. The inventory of potentially known TMC crystals includes zinc thiourea sulphate (ZTS), bis thiourea cadmium chloride (BTCC), copper thiourea chloride (CTC), zinc thiourea chloride (ZTC), bis thiourea cadmium acetate (BTCA), bis thiourea zinc acetate (BTZA) and potassium thiourea chloride (PTC) [3,4].…”