Effect of Rochelle salt on growth, optical, photoluminescence, photoconductive and piezoelectric properties of the triglycine sulphate single crystal

Triglycine sulphate (TGS) is well-known ferroelectric crystal, finding many applications in IR detectors and laser devices. Triglycine sulphate crystal was grown by conventional method using water as a solvent. The 1mol% of semiorganic piezoelectric material Rochelle salt (RS) is added into the pure...

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Bibliographic Details
Published in:Journal of crystal growth 2017-06, Vol.468, p.340-344
Main Authors: Rajesh, P., Rao, G. Babu, Ramasamy, P.
Format: Article
Language:English
Subjects:
A1. X-ray diffraction
A2. Growth from solutions
B1. Inorganic compounds B1. Organic compounds B2. Ferroelectric materials B3. Infrared devices
Chemical etching
Crystal growth
Curie temperature
Detectors
Diffraction
Dislocation density
Ferroelectric materials
Ferroelectrics
Optical properties
Organic chemicals
Photoconductivity
Photoluminescence
Piezoelectricity
Single crystals
Triglycine sulfate
X-rays
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Summary:Triglycine sulphate (TGS) is well-known ferroelectric crystal, finding many applications in IR detectors and laser devices. Triglycine sulphate crystal was grown by conventional method using water as a solvent. The 1mol% of semiorganic piezoelectric material Rochelle salt (RS) is added into the pure TGS to enhance its optical, photoluminescence and piezoelectric properties. The crystallinity of the grown crystals was examined by powder X-ray diffraction analysis. Optical transmittance shows that the RS doped TGS possesses higher transparency compared to pure TGS. High intense luminescence at 442nm for the RS doped TGS single crystal is observed from the photoluminescence study. The negative photoconductivity nature is observed for both pure and RS doped TGS and it was studied under different conditions such as dark, light and also under different temperatures such as at Curie temperature, above and below Curie temperature. Low dislocation density for RS doped TGS crystal is observed from chemical etching analysis. The piezoelectric d33 co-efficient is also increased as a result of RS doping in TGS. •The high optical transmittance is observed in RS doped TGS in compared to pure TGS.•PL spectrum shows that RS doped TGS possesses high crystalline perfection.•Negative photoconductive nature is observed for both pure and RS doped TGS.•Piezoelectric d33 co-efficient is also increased as a result of RS doping in TGS.
ISSN:0022-0248
1873-5002
DOI:10.1016/j.jcrysgro.2016.10.070