Optimizing Structural, Microhardness, Surface Growth Mechanism, Luminescence and Thermal Traits of KH2PO4 Crystal Exploiting Multidirectional H‐Bonding Quality of Dopant Tartaric Acid

• Published in: Crystal research and technology (1979) Vol. 53; no. 4
• Main Authors: Anis, Mohd, Baig, Mirza Irshad, Pandian, Muthu Senthil, Ramasamy, P., AlFaify, Salem, Ganesh, Venga, Muley, Gajanan G., Ghramh, Hamed Ali
• Format: Journal Article
• Language: English
• Published: 01.04.2018
• Subjects: crystal growth; luminescence; microscopic studies; thermal studies; X‐ray diffraction
• ISSN: 0232-1300; 1521-4079
• DOI: 10.1002/crat.201700165

High‐end nonlinear optical devices demand superior quality KH2PO4 crystal and to meet this necessity slow solvent evaporation technique is employed to grow optical quality potassium dihydrogen orthophosphate (KH2PO4, KDOP) crystal by doping tartaric acid (TA) and special attention is devoted to optimize the defect influenced properties of KDOP crystal. The incorporation of TA in KDOP crystal matrix is evaluated by employing energy dispersive spectroscopic technique. The crystalline phase and structural dimensions of pure and TA doped KDOP crystal is evaluated by means of powder X‐ray diffraction analysis. The luminescence behavior of TA doped KDOP crystal is examined in visible region and violet colored emission is evidenced at 408 nm. The Vickers microhardness studies are carried out to uncover the constructive influence of TA on hardness and elastic stiffness coefficient of KDOP crystal. Impressive role of TA in minimizing defect density and improving the surface growth mechanism of KDOP crystal is explored by chemical etching analysis. The thermogravimetric analysis curve is traced within 30–650 °C and TA doped KDOP crystal is found thermally stale up to 233 °C. The results are appraised to propose the suitability of TA doped KDOP crystal for distinct applications. Optical quality single crystal of KH2PO4 is exclusively demanded for modern nonlinear optical device applications. In this article, the tartaric acid (TA) facilitated with unique quality of multidirectional bonding through hydrogen network is doped in KH2PO4 crystal to tailor its luminescence, microscopic and thermal properties. Current investigation reveals that the TA doped KH2PO4 crystal express superior microscopic properties.