Irradiation-induced reduction and luminescence properties of Sm2+ doped in BaBPO5

✍ Scribed by Yanlin Huang; Kiwan Jang; Wanxue Zhao; Eunjin Cho; Ho Sueb Lee; Xigang Wang; Dake Qin; Ying Zhang; Chanfang Jiang; Hyo Jin Seo

• Book ID: 104030000
• Publisher: Elsevier Science
• Year: 2007
• Tongue: English
• Weight: 560 KB
• Volume: 180
• Category: Article
• ISSN: 0022-4596
• DOI: 10.1016/j.jssc.2007.09.030

✦ Synopsis

Usually, Sm 2+ ions could be reduced by heating the materials in reducing atmospheres. Exposure to ionizing radiations is also known to cause Sm 3+ -Sm 2+ conversion. In this work, BaBPO 5 doped with the samarium ion was prepared by high temperature solid-state reaction. Sm 2+ ions were obtained by two different reduction methods, i.e., heating in H 2 reduced atmosphere and X-ray irradiation. The measurements of X-ray diffraction (XRD), and scanning electron microscope (SEM) were investigated. It is found that the conversion of Sm 3+ -Sm 2+ is very efficient in BaBPO 5 hosts after X-ray irradiation. Sm 2+ ions under these two reduction methods exhibit different characteristics that were studied by measurements of luminescence and decay. The results showed that the luminescence properties of Sm 2+ ions in BaBPO 5 were highly dependent on the sample preparation conditions.