2022
DOI: 10.1016/j.ceramint.2021.11.038
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Surface engineered environment-stable red-emitting fluorides for white light emitting diodes

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Cited by 7 publications
(3 citation statements)
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“…S6 †), indicating that Ge 4+ is more easily embedded on the surface of KTFM than Si 4+ , because the ionic radii of Ge 4+ is closer to that of Ti 4+ . In addition, Mn 4+ on the surface of KTFM can be quickly reduced to Mn 2+ in the reaction solution by GA. 44 Therefore, the Mn 2p XPS signal on the surface of KTFM treated by RSRC is significantly inhibited (Fig. 2D and Fig.…”
Section: Microstructure Of the Heterogeneous Shellsmentioning
confidence: 91%
“…S6 †), indicating that Ge 4+ is more easily embedded on the surface of KTFM than Si 4+ , because the ionic radii of Ge 4+ is closer to that of Ti 4+ . In addition, Mn 4+ on the surface of KTFM can be quickly reduced to Mn 2+ in the reaction solution by GA. 44 Therefore, the Mn 2p XPS signal on the surface of KTFM treated by RSRC is significantly inhibited (Fig. 2D and Fig.…”
Section: Microstructure Of the Heterogeneous Shellsmentioning
confidence: 91%
“…One significant challenge for ionic fluoride crystals containing [MnF 6 ] 2– is their high propensity to react with water, forming brown-black oxygen-containing compounds that drastically reduce luminescence efficiency. This limitation severely restricts their broad implementation in WLED devices. Current strategies to address moisture resistance primarily focus on surface-based techniques, such as outer coating, surface passivation, , and constructing a shell with minimal or no Mn 4+ presence to effectively isolate [MnF 6 ] 2– from water molecules. , Recently, our group developed a novel reduction-assisted surface recrystallization method, enabling the reconstruction of a Mn 4+ -free K 2 SiF 6 inert shell on K 2 SiF 6 :Mn 4+ crystals . The resulting core–shell structure exhibited exceptional stability, maintaining a QE of 97% even after boiling in water for 20 min.…”
Section: Introductionmentioning
confidence: 99%
“…In recent years, many solutions have been proposed to improve the moisture resistance problem of the fluoride phosphors. One common reported strategy is to construct the heterogeneous organic or inorganic moistureresistant shells to protect active Mn 4+ from the external environment [19][20][21] . For example, Zhou et al coated the octadecyltrimethoxysilane (ODTMS) 22 to form a super hydrophobic surface with good water resistance and thermal stability.…”
mentioning
confidence: 99%