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Effect of anthracene doping on potassium hydrogen phthalate crystals |
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| Authors: | S Meenakshisundaram S Parthiban U R Pisipaty G Madhurambal S C Mojumdar |
| Institution: | 1. Department of Chemistry, Annamalai University, Annamalainagar, Tamil Nadu, 608 002, India 2. Department of Chemistry, SCSVMV University, Kanchipuram, Tamil Nadu, India 3. Department of Chemistry, ADM College for Women, Nagapattinam, India 4. Department of Chemical Engineering and Applied Chemistry, University of Toronto, 200 College Street, Toronto, ON, M5S 3E5, Canada 5. Department of Engineering, University of New Brunswick, Saint John, NB, E2L 4L5, Canada |
| Abstract: | The influence of the highly fluorescent dopant, anthracene (over a concentration range from 5 × 10?4 to 1.2 × 10?2 mol dm?3) on the nonlinear optical properties and fluorescence intensity of potassium hydrogen phthalate (KHP) single crystals grown at 30 °C by a slow evaporation solution growth technique (SEST) has been investigated. Powder XRD and FTIR spectral analyses confirm the slight distortion of the structure of crystal because of doping. UV–Visible study shows that the transparency is not affected much by the dopant. The SEM investigation reveals that KHP suffers from crack development. Thermal analysis indicates that there is no decomposition of the crystal up to the melting point. It is interesting to observe that additions of small quantity anthracene to KHP results in the enhancement of fluorescence intensity. The fluorescence intensity dependence on dopant concentration is observed. Interestingly, second harmonic generation (SHG) efficiency of KHP is dramatically improved by doping with small quantities of anthracene. |
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