Morphological and optical properties of doped potassium hydrogen phthalate crystals

Enculescu M.

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Morphological and optical properties of doped potassium hydrogen phthalate crystals

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Potassium hydrogen phthalate (KAP) crystals doped with rhodamine 6G (Rh 6G) and polyvinylpyrrolidone (PVP) were grown by solution evaporation technique. Nucleation occurred without the use of seeds and optically transparent crystals were obtained. The grown crystals were characterized by XRD measurements performed on crystals and their powders, optical transmission and photoluminescence measurements. The influence of the dopants on the structural, morphological and optical properties of the KAP crystals was analysed. Dopants do not change the structure of the single crystals while the addition of PVP changes the morphology of crystals from pseudo-hexagonal to rhomb. Three new XRD reflections are observed in all single-crystal and powder XRD spectra and are probably (0 3 0), (0 4 0) and (0 5 0) lines. The UV cut-off and transparency of the crystals are not changed by doping. Dye-doped KAP crystals exhibit a strong emission band centred at 550 nm excited with 480 nm wavelength. For the dye-doped crystals the up-conversion was investigated and its second harmonic origins are proved using photoluminescence measurements.

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来源
《Physica, B. Condensed Matter》 |2010年第17期|3722-3727|共6页
作者
Enculescu M.;
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作者单位

National Institute of Materials Physics, Multifunctional Materials and Structures Laboratory, PO Box MG-7, 077125 Magurele-Bucharest, Romania;

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原文格式 PDF
正文语种英语
中图分类物理学;
关键词
Dye-doping; Non-linear optic material; Potassium acid phthalate; Single crystal growth; Solution growth;

Morphological and optical properties of doped potassium hydrogen phthalate crystals

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