Zobrazeno 1 - 10
of 545
pro vyhledávání: '"Ji-Guang Li"'
Publikováno v:
Journal of Advanced Ceramics, Vol 13, Iss 1, Pp 113-123 (2024)
A chemical co-precipitation strategy was employed to synthesize a series of (Gd0.95−xLuxEu0.05)3Al5O12 (x = 0.1−0.95) powder phosphors, followed by vacuum sintering to achieve transparent garnet ceramic phosphors. The density functional theory in
Externí odkaz:
https://doaj.org/article/955ac81f2ce143e2bb6721757e259a56
Publikováno v:
Journal of Asian Ceramic Societies, Vol 10, Iss 3, Pp 575-582 (2022)
The low OH−/RE3+ molar ratio of hydroxide sulfate RE(OH)SO4 (RE = rare earth) makes it a potential good template for the synthesis of rare earth compounds, which is shown in this work by the direct generation of (La,Eu)F3, (La,Eu)PO4, Na(La,Eu)(WO4
Externí odkaz:
https://doaj.org/article/ca5906118bda4d3baa568fa1311be383
Publikováno v:
Journal of Materials Research and Technology, Vol 18, Iss , Pp 4216-4227 (2022)
Pr3+ activated Gd2O2S and La2O2S are finding a wide range of luminescence applications but their solid-solution form has rarely been reported in the literature. A series of [(Gd1.0-xLax)0.99Pr0.01]2O2S (x = 0.0–1.0, GLOS:Pr3+) solid-solution phosph
Externí odkaz:
https://doaj.org/article/f70702a2be65462aaf176633d839e1cf
Publikováno v:
Journal of Materials Research and Technology, Vol 17, Iss , Pp 2540-2549 (2022)
Calcining an amorphous precursor in flowing hydrogen at 900 °C directly produced nanocrystalline La2O2S:Pr3+ powder (LOS:Pr3+; average size ∼35 nm) of a unimodal distribution of particle size (mean diameter ∼90 nm). The precursor, precipitated b
Externí odkaz:
https://doaj.org/article/a30122174c5c412295fe8fb50614d983
Publikováno v:
Journal of Asian Ceramic Societies, Vol 9, Iss 4, Pp 1419-1428 (2021)
Phase-pure α-(La,Yb,Er)2W2O9 upconversion (UC) phosphors were synthesized via room temperature coprecipitation and subsequent calcination at 1073–1273 K. The pH of the coprecipitation system and the RE3+ to WO42- ratio were found crucial for the f
Externí odkaz:
https://doaj.org/article/2a7db191651f49d89d400fde1c973ad5
Publikováno v:
Journal of Materials Research and Technology, Vol 13, Iss , Pp 1-12 (2021)
Non-rare-earth Mn4+-activated broadband emission deep-red phosphors are considered as the potential red emitter in indoor plant growth LEDs owing to that their emission peaks can well overlap with the absorption of plant pigments. Here, a series of M
Externí odkaz:
https://doaj.org/article/8303f8c624d441ffbfc7046e0b40b9a1
Publikováno v:
Journal of Asian Ceramic Societies, Vol 9, Iss 3, Pp 782-793 (2021)
Rare earth double tungstates Na(Gd,RE)(WO4)2 (RE = Eu/Yb-Er) were successfully obtained from layered rare earth hydroxide precursors via sacrificial reaction at 200°C with molar ratio WO42-/RE3+ = 2.5 for 24 h reaction without calcination and the em
Externí odkaz:
https://doaj.org/article/375775b43d2e447d82502544326c8a40
Publikováno v:
Journal of Materials Research and Technology, Vol 12, Iss , Pp 117-124 (2021)
K+/Na+ doped ZnWO4:Yb3+,Tm3+ nanophosphors were successfully synthesized via malate assisted hydrothermal reaction at 180 °C for 24 h, followed by calcination at 700 °C for 2 h, and K+/Na+ incorporation was demonstrated to significantly affect the
Externí odkaz:
https://doaj.org/article/886bd0454a7e4dc8bf713c81d508096c
Autor:
Huan Tu, Guoying Zhao, Jingshan Hou, Yufeng Liu, Yan Zhou, Ganghua Zhang, Hong-Tao Sun, Ji-Guang Li, Yongzheng Fang
Publikováno v:
AIP Advances, Vol 12, Iss 5, Pp 055113-055113-9 (2022)
White light emitting diodes (LEDs) suffer from two most common drawbacks: the deficiency of the red component and the poor thermal stability of silicone. Ce3+-doped garnet phosphors with tailor-made luminescence properties can be achieved by variatio
Externí odkaz:
https://doaj.org/article/70628bf9d5aa4595a36f80c0f8f1f6f9
Publikováno v:
Journal of Materials Research and Technology, Vol 9, Iss 6, Pp 12052-12064 (2020)
Doughnut-shaped t-LuPO4 microparticles (∼1.3−1.5 μm in diameter and 1.1–1.3 μm thick) were originally synthesized via lactic acid (LA) assisted solvothermal reaction, and the effects of LA content and PO43−/Lu3+ molar ratio on phase/morphol
Externí odkaz:
https://doaj.org/article/1d47bec4048b46d5b6605653e5aaf43e