We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Multicolor-tunable Ca8MgBi(PO4)7: Ce3+, Tb3+, Mn2+ phosphors under dual-channel excitation.
- Authors
Wang, Shuang; Han, Ya-jie; Shi, Lei; Hua, Guang-chao; Li, Zi-xuan; Li, Ying-jie; Zhou, Xiao-jun; Zhang, Zhi-wei; Ma, Ming-zhen; Mu, Zhong-fei
- Abstract
A series of color-tunable phosphors Ca8MgBi(PO4)7(CMBPO): Ce3+, Tb3+, Mn2+ have been prepared by high-temperature solid-state reaction process. The X-ray diffraction (XRD), field-emission scanning electron microscope (FESEM), photoluminescence excitation (PLE) and emission (PL) spectra were utilized to characterize the samples. Through the dual-channel excitation process, energy transfers (ET) occur simultaneously between Ce3+ → Tb3+ and Ce3+ → Mn2+. In addition, ETs process from Ce3+ to Tb3+/Mn2+ has been proved to be a resonance type, which is manifested by dipole–dipole/dipole-quadrupole interactions. Moreover, the emission band of CMBPO:0.20Mn2+ distributed in the red and far-red regions matches well with the red light wavelength required for phytochrome protein (PR and PFR), indicating that the phosphor can be used as a new type of red luminescent powder absorbed by plant photosensitive pigment and promoted plant growth. Importantly, the CMBPO:0.10Ce3+, 0.08Tb3+, zMn2+ can emit white light by properly tuning the ratio of Tb3+ and Mn2+ under ultraviolet (UV) excitation. The results suggested that the present phosphors can be a potential candidate for white light emitting diodes (WLEDs).
- Subjects
PHOSPHORS; LIGHT emitting diodes; PLANT pigments; SCANNING electron microscopes; ENERGY transfer; PLANT growth
- Publication
Journal of Materials Science: Materials in Electronics, 2020, Vol 31, Issue 15, p12880
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-020-03841-6