Enhanced crystalline perfection and fluorescence properties of p-terphenyl single crystals grown by the vertical Bridgman technique with a novel modified growth vessel

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• 作者：Qing Ai ; Peifeng Chen ; Yuxiang Feng and Yebin Xu
• 关键词：X-ray diffraction ; fluorescence ; vertical Bridgman technique ; p-terphenyl
• 刊名：Journal of Applied Crystallography
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：50
• 期：1
• 页码：278-282
• 全文大小：698K
• ISSN：1600-5767

文摘

During the growth process of organic crystals, it is easy to induce thermal defects and impurities when using the conventional Bridgman technique. In the present study, a specially designed double-wall ampoule was used to solve this problem. High-quality p-terphenyl single crystals were successfully grown by the vertical Bridgman method with the improved ampoule. Powder X-ray diffraction analyses were performed to evaluate the crystallinity of the grown single crystals. Fluorescence spectrum studies show an enhancement of fluorescence properties due to the improvement in crystalline perfection.