Ammonothermal synthesis of charge-compensated SrAlSiN3:Ce3+ phosphor

作者：Maruyama Yuki; Yanase Yuki; Watanabe Tomoaki^*

来源：Journal of the Ceramic Society of Japan, 2017, 125(5): 399-401.

DOI：10.2109/jcersj2.16295

• Ammonothermal
• Nitride
• Phosphor
• Supercritical
• Low temperature process
• SrAlSiN3

In this study, we successfully synthesized SrAlSiN3:Ce3+ at 1073K using the ammonothermal method. Scanning electron microscope images revealed bar-like crystals in the products. We investigated the effects of using a charge-compensating ion on the phosphor's emission of SrAlSiN3 with Ce3+ and Sr2+ and adding Na+ as a charge compensator. We found that Ce3+-doped SrAlSiN3 exhibited a weak emission. However, SrAlSiN3 co-doped with Ce3+ and Na+ exhibited a broad emission band centered at approximately 550nm for an excitation wavelength of 460 nm. We, thus, found that Na+ has an important impact on Sr2+ and Ce3+ by acting as a charge-compensating ion. We were able to successfully synthesize a novel SrAlSiN3: Ce3+ phosphor by adjusting the charge of Sr2+ and Ce3+ by controlling the Na+ co-doping.

• 出版日期2017-5