Enhancement of electro-optic and structural properties of TGS single crystals on doping with l-glutamic acid

Singh, Preeti; Abdullah, M.M.; Sagadevan, Suresh; Ikram, Saiqa

doi:10.1007/s10854-018-8790-0

Cited by 11 publications

(3 citation statements)

References 29 publications

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“…[39] Single crystals that are thermally stable are critical for laser and highpower systems. [40] As a result, it is critical to research the crystal's thermal properties before applying it to various applications. TG-DTA was used in this study to determine the thermal stability, purity and crystalline nature of the grown crystals.…”

Section: Thermal Analysismentioning

confidence: 99%

Optical and Thermal Properties of Acid Red Doped Triglycine Acetate Crystal for Optoelectronic Applications

Chaithra

Deepthi

Challa³

et al. 2021

Crystal Research and Technology

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A positive change in crystal can be induced by dye. Pure and Acid Red 1 dye (AR) doped triglycine acetate (TGAc) single crystals are synthesized by solution approach to enrich the characteristics of pure TGAc crystals. The crystalline nature of the grown crystals is investigated using powder X-ray diffraction. The Scherrer method has been used to calculate the crystallite size of both developed crystals and is compared to the Williamson and Hall method. Fourier transform infrared spectroscopy confirms the existence of several functional groups as well as dye inclusion in the produced crystals. Four distinct absorption bands are found in UV-vis-NIR absorption spectra at the location where AR dye is inserted into the TGAc matrix. Different optical constants, such as optical bandgap (E g ), extinction coefficient (k), refractive index (n) and optical conductivity (𝝈) are measured for both samples based on transmittance measurements. The thermal stability and decomposition temperature of 0.05 mol% AR dye doped TGAc are found to be higher. The doped crystals' improved optical characteristics and thermal stability prove their applicability for optoelectronic applications.

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Section: Thermal Analysismentioning

confidence: 99%

Optical and Thermal Properties of Acid Red Doped Triglycine Acetate Crystal for Optoelectronic Applications

Chaithra

Deepthi

Challa³

et al. 2021

Crystal Research and Technology

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“…[1][2] Organic materials are gaining interest for optoelectronic applications and photonic because of their high-frequency conversion, second-order optical nonlinearity, large optical susceptibilities, low cost, optical damage threshold and short response time. [3][4][5] Asymmetries in the 𝜋-electron conjugation systems of the DOI: 10.1002/crat.202100265 electron acceptor, electron donor groups of organic molecules are extremely polarisable physical objects for nonlinear optical (NLO) applications. [6][7] Organic optical materials have significant optical susceptibilities, ultrafast response times, high optical thresholds when compared to inorganic materials.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Growth, Physicochemical Characterization, and Computational Studies on Aminopyridinium Chloronicotinate Single Crystal

Amudha¹,

Santhakumari²,

Chandrika³

et al. 2022

Crystal Research and Technology

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Aminopyridinium chloronicotinate (APCN) single crystals are grown using a slow evaporation solution growth method. The APCN crystal belongs to the monoclinic crystal system with a centrosymmetric space group P2 1 /c, resulted from the X-ray diffraction analysis. Powder X-ray diffraction analysis is used to determine the crystallinity nature of grown crystals. Various functional groups in the grown crystal were identified using Fourier transform infrared spectroscopy. The optical transmittance, energy bandgap of the crystal is analyzed through UV-vis-NIR spectroscopy. The thermal stability of APCN crystal is studied by using thermogravimetric and differential thermal analysis. The mechanical property of the grown crystal is determined by the Vickers microhardness test. The density functional theory method at B3LYP with 6-31+G(d,p) basis set is used to perform the theoretical investigations in order to get the information regarding the HOMO-LUMO, global chemical reactivity descriptors, natural bond orbital, Mulliken atomic charge, molecular electrostatic potential, and thermodynamical properties of the molecule in the gaseous state.

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“…Incorporation of doping atoms or molecules in TGS crystal lattice can be successfully used for achieving a "unipolar" ferroelectric state [7][8][9] in TGS, improving their nonlinear optical [10], pyroand piezoelectric properties [11][12][13], etc. At present in the literature, there is information about TGS crystals doped with metal ions and nanoparticles [14][15][16], amino acids [9,[17][18][19][20][21][22], organic acids [23][24][25][26][27], inorganic acids and salts [13,[28][29][30][31][32][33][34]. Doping of TGS with various organic molecules with a dipole moment from 4 to 6 Debye shows that the greater the dipole moment of the impurity molecule, the higher the spontaneous polarization P s and the pyroelectric coefficient p of the doped crystals.…”

Section: Introductionmentioning

confidence: 99%

Croconic Acid Doped Triglycine Sulfate: Crystal Structure, UV-Vis, FTIR, Raman, Photoluminescence Spectroscopy, and Dielectric Properties

et al. 2022

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Triglycine sulfate (TGS) single crystals doped with croconic acid (CA) were grown by evaporation from aqueous solutions. X-ray diffraction analysis shows a slight reduction in unit cell volume in TGS:CA compared to pure TGS crystals. The polarized Raman and near-infrared absorption spectra show that the positions of most lines resulting from inter- and intramolecular vibrations are in good agreement with those in spectra of undoped TGS crystals. The inclusion of CA in TGS is confirmed by the presence of bands characteristic of CA in the infrared-Fourier transform spectra. The ultraviolet-visible absorption spectra of TGS:CA are characterized by the presence of additional absorption bands (compared to the spectra of pure TGS) located in the transparent region of pure TGS. In the photon energy region 1.6–3.6 eV, a strong “green” luminescence band is present in TGS:CA upon excitation at λ = 325 nm. The position of the emission band depends on the wavelength of the exciting light. Doping of TGS with CA causes pinning of domain walls, which is accompanied by a decrease in amplitude and frequency dispersion of the dielectric anomaly at the phase transition, a decrease in the switchable polarization and an increase in the coercive field of hysteresis loops.

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Enhancement of electro-optic and structural properties of TGS single crystals on doping with l-glutamic acid

Cited by 11 publications

References 29 publications

Optical and Thermal Properties of Acid Red Doped Triglycine Acetate Crystal for Optoelectronic Applications

Optical and Thermal Properties of Acid Red Doped Triglycine Acetate Crystal for Optoelectronic Applications

Synthesis, Growth, Physicochemical Characterization, and Computational Studies on Aminopyridinium Chloronicotinate Single Crystal

Croconic Acid Doped Triglycine Sulfate: Crystal Structure, UV-Vis, FTIR, Raman, Photoluminescence Spectroscopy, and Dielectric Properties

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