Enhanced optical, dielectric and piezoelectric behavior in dye doped zinc tris-thiourea sulphate (ZTS) single crystals

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作   者：

Sonia Bhandari;  Nidhi Sinha;  Geeta Ray;  Binay Kumar; 

作者机构：

India;  Delhi 110007;  Department of Electronic;  University of Delhi;  Department of Physics and Astrophysics;  SGTB Khalsa College; 

关键词：

constant;  photoluminescence;  measurement; 

期刊名称：

Chemical Physics Letters

i s s n：

0009-2614

年卷期：

2014 年 591 卷

页   码：

10-15

页   码：

摘   要：

Pure and 0.1 mol% amaranth dye doped zinc tris-thiourea sulphate (ZTS) crystals were grown by slow evaporation technique. Orthorhombic structures with changed morphology were observed. Various functional groups present were identified by FTIR and Raman analysis. UV–Vis spectra shows wide transmittance and increased optical band gap from 4.54 to 4.59 eV, with lower extinction coefficient in doped case. In photoluminescence measurement, an intense peak at 416 nm was observed for doped ZTS. Dielectric constant value increases from 3.28 to 9.40 at 1 kHz with doping. Piezoelectric coefficient d_(33) is also enhanced from 0.24 to 3 pC/N.