Enhancement of yttrium ion on the properties of L-histidine nitrate single crystal for frequency conversion applications

Nonlinear optical single crystals of L-histidine nitrate (LHN) as well as 0.05 mol % Y²⁺ doped LHN and 0.10 mol % Y²⁺ doped LHN were successfully grown by slow evaporation technique at room temperature. The lower cutoff wavelength and transmittance were 339 nm, 343 nm, 347 nm and 84 %, 86 % and 87 % for LHN, 0.05 mol % and 0.10 mol % yttrium doped LHN, respectively. Powder XRD studies revealed that the grown materials belong to an orthorhombic system with the space group P2₁2₁2₁. FT-IR peak at 534 cm⁻¹ due to yttrium coordinated with oxygen was observed. The EDAX analysis confirmed the presence of such elements as C, N, O and Y in the grown materials. High intensity PL emission peak was obtained at 420 nm.