Enhancement of water resistance and photo-efficiency of K2SiF6:Mn4+ phosphor through dry-type surface modification

Retracted Article: Highly Stable Mn4+-Activated Red-Emitting Fluoride Phosphors and Enhanced moisture stability for White LEDs

“…Mn 4+ activated fluoride red phosphor ， which has the advantages of high luminous efficiency, high color purity, main emission peak (~630 nm) located in the visible light sensitive region of the human eye, and blue light region (~450 nm) broadband absorption, etc. [9][10][11][12][13][14][15][16][17][18] Therefore, it is well-known that it's the most promising new generation of red phosphor [18][19][20][21][22][23][24] . It is one of the current research hotspots in the field of red phosphor research.…”

Dual‐Shelled RbLi(Li3SiO4)2:Eu2+@Al2O3@ODTMS Phosphor as a Stable Green Emitter for High‐Power LED Backlights

“…After surface coating and modification, the Si−O band shifts and the intensity gradually increases due to the presence of Al−O, Al−OH, Al‐O‐Si bonds, indicating Al 2 O 3 and hydrophobic layer are formed. In addition, the intensities of the bands at 2920 and 2850 cm −1 increase after silane modification, which is ascribed to the increased stretching of C−H bonds from ‐CH 2 and ‐CH 3 ‐ groups of the silane . The photoluminescence (PL) and photoluminescence excitation (PLE) spectra of RLSO:Eu 2+ , RLSO:Eu 2+ @Al 2 O 3 and RLSO:Eu 2+ @Al 2 O 3 @ODTMS are presented in Figure c,d, which exhibit basically the same spectral profiles except for the intensity.…”

Waterproof Narrow-Band Fluoride Red Phosphor K2TiF6:Mn4+ via Facile Superhydrophobic Surface Modification

“…The C 1s region could be divided into three Gaussian curves; the peaks located at 286.0 ± 0.2, 284.6, and 283.1 ± 0.2 eV were ascribed to C–O, C–C or C–H, and C–Si, respectively . In addition, the Si 2p region also could be split into two Gaussian curves; the peaks residing at 103.1 and 101.9 eV belonged to Si–C and Si–O, respectively . The absence of a Si 2p peak from the XPS spectra of OD-KTF (0.5%) might be attributable to the complete encapsulation of the alkoxy shell from ODTMS, and the long-chain alkyl folded outward and covered Si atoms.…”