A novel red emitting phosphor LiBaB9O15:Sm2+/Sm3+, li(+) with broad excitation band for white LEDs

作者：Li, Ting; Wang, Zhijun^*; Li, Panlai^*; Xu, Shuchao; Bai, Qiongyu; Yang, Zhiping

来源：Luminescence, 2018, 33(2): 438-442.

DOI：10.1002/bio.3432

• li(+)
• LiBaB9O15:Sm2+/Sm3+
• luminescence
• phosphors

A novel tunable red emitting phosphor LiBaB9O15:Sm2+/Sm3+, Li+ with broad excitation band was synthesized by a high temperature solid-state method. Luminescence properties were investigated in detail by luminescence, X-ray photoelectron spectroscopy (XPS) spectra and CIE chromaticity coordinates. XPS data confirmed that there were Sm3+ in LiBaB9O15:Sm3+ and Sm2+/Sm3+ in LiBaB9O15:Sm2+/Sm3+, respectively. Spectral property of LiBaB9O15:Sm3+, LiBaB9O15:Sm3+/Sm2+ and LiBaB9O15:Sm2+, Li+ presented that the excitation band of Sm3+ widened and the excitation band of Sm2+ ranged from 350 to 450nm. And the red light color is tunable with changing Li+ concentration. The results indicated that LiBaB9O15:Sm2+/Sm3+, Li+ may be promising red phosphor for white light emitting diodes.

• 出版日期2018-3
• 单位河北大学