Unidirectional growth, optical and dielectrical behavior of Nicotinium p-Toluenesulfonate crystal for optoelectronic applications

Typical PXRD pattern and their peak positions clearly evidences that the grown crystals are NPT with strong (001) orientation. The corresponding (001) plane intensity is increased significantly for NPT crystal grown by UGCT when compare with NPT crystal grown by SEGT. Noticeably, the peak intensities of other orientations diminished for NPT crystal grown by UGCT, further support the unidirectional growth of NPT via UCGT with (001) specific orientation. [Display omitted] •The nonlinear optical NPT crystal was grown by UCGT for the plane (001).•Its optical properties were enhanced when compare with NPT crystal grown by SEGT.•The NPT crystal grown by UCGT has higher dielectric constant and lower dielectric loss. Novel nonlinear optical crystal of Nicotinium 4-Toluenesulfonate (NPT) was developed in unidirectionally for (001) plane by unidirectional crystal growth technique. The (001) plane is confirmed by powder XRD. Unidirectionally grown NPT crystals posses higher optical transmittance than conventionally grown crystal in the UV region and visible region. The photoluminescence studies confirms the grown NPT crystals in red emission. Surface withstand stability of unidirectionally grown crystal has increased. The dielectric constant is increased and dielectric loss is decreased in unidirectionally grown NPT crystal. The efficiency of Second Harmonic Generation for unidirectionally grown NPT crystal is measured and compared with typical KDP.