搜索到7595篇“ PHOSPHOR“的相关文章
面向大功率照明应用的荧光玻璃成型方法研究进展
2025年
荧光玻璃凭借其出色的热稳定性、加工便利性及经济性,在现代大功率照明应用中占据了重要地位。传统的干法成型技术在制造复杂形状产品方面存在局限,促使科研工作者探索更多荧光玻璃成型工艺,如丝网印刷、旋转涂覆、凝胶注模和3D打印成型。这些湿法成型技术为荧光玻璃的制造提供了新途径。本文综述了荧光玻璃成型技术的研究进展,分析了干法成型的生产便捷性、丝网印刷的图案精确性、旋转涂覆的均匀性、凝胶注模的复杂形状制造能力以及3D打印成型的灵活性。这些技术在制备荧光玻璃的应用中优势明显,但也面临挑战。文章深入讨论了荧光玻璃湿法成型技术所面临的挑战,并对其未来发展的融合趋势进行了前瞻性展望,旨在为荧光玻璃材料的性能优化及应用拓展提供科学指导。
武亦文郭宝林李晓康姚庆
Phosphor-in-glass film on transparent diamond:an emerging newgeneration color converter for high-brightness laser lighting
2025年
Inorganic luminescent materials have been widely used as color converters for applications in lighting and displays [1-6].In recent years, laser-driven solid-state lighting based on phosphor-converted white laser diode (pc-WLD) technology, which is commonly fabricated with the combination of "blue LD+color converters", is rising for high-power lighting due to its super-high brightness, reliability and compactness [7,8].
Xiaoyong Huang
Unique composite architecture of phosphor-in-glass film coated on different heat-conducting substrates for high-brightness laser lighting
2025年
In the development of static luminescent materials with remarkable optical-thermal performance and low cost, next-generation high-brightness laser lighting faces a key challenge. Herein, a unique composite architecture of Y3Al5O_(12):Ce^(3+) (YAG) phosphor-in-glass film coated on different heat-conducting substrates (PiGF@HCSs), i.e., PiGF@sapphire, PiGF@Al_(2)O_(3), PiGF@AlN, and PiGF@BN–AlN composites, was designed and prepared by a simple film printing and low-temperature sintering technology. The heat-conducting substrates significantly affect the luminescence saturation and phosphor conversion of PiGF@HCSs, allowing substrates with higher thermal conductivity (TC) to have a higher laser power density (LPD) and higher reflectivity to enable higher luminous efficacy (LE). As a consequence, PiGF@sapphire realizes a luminous flux (LF) of 2076 lm@12 W/mm^(2), which is higher than those of PiGF@Al_(2)O_(3) (1890 lm@15 W/mm^(2)) and PiGF@AlN (1915 lm@24 W/mm^(2)), whilePiGF@BN–AlN enables a maximum LF of 3058 lm@21 W/mm^(2). Furthermore, the LE of PiGF@BN–AlN reaches 194 lm/W, which is 1.6 times that of PiGF@AlN, while those of PiGF@sapphire and PiGF@Al_(2)O_(3) are 192 and 150 lm/W, respectively. The working temperature of PiGF@AlN is only 93.3℃ under LPD of 9 W/mm^(2), while those of PiGF@sapphire, PiGF@Al_(2)O_(3), and PiGF@BN–AlN increase to 193.8, 133.6, and 117℃, respectively. These findings provide guidance for commercial applications of PiGF@HCS converters in high-brightness laser lighting and displays.
Xin LiuMingxiang ChenJiuzhou ZhaoHongjin ZhangYang PengQing Wang
宽带近红外Na_(3)CrF_(6)荧光粉的水热合成及发光性能
2025年
利用水热法合成了一种宽带近红外Na_(3)CrF_(6)荧光粉,研究了其结构、微观形貌和光致发光性能。结果表明,在435nm激发光的照射下,Na_(3)CrF_(6)荧光粉可发出650~850nm宽带近红外光,其峰值位于738nm处,半高宽为95nm;通过分析光谱数据,发现Cr3+在Na_(3)CrF_(6)荧光粉中的晶体场强度为1.72,处于弱晶体场环境中;298~473K温度范围内,随着加热温度的升高,Na_(3)CrF_(6)荧光粉的发光强度缓慢下降。
张涵孙剑锋梁金生
关键词:水热合成光致发光性能
Fabrication and Mechanical,Dielectric and Optical Properties of Cellulose Paper Embedded with SrAl2O4:Eu,Dy Phosphor
2025年
The work deals with cellulose paper filled with nanocellulose and SrAl2O4:Eu,Dy oxide phosphor.It was found that both nanocellulose and oxide improve the tensile strength of the composites obtained.The samples with the oxide demonstrate a long-lasting photoluminescence(PL)under sunlight and ultra-violet(UV)illumination.Room-temperature the PL spectra reveal a wide multicomponent band spreading over all the visible spectral regions.The short-wavelength part of the band is ascribed to the cellulose-related luminescence,while the long-wavelength PL component with maxima near 540 nm corresponds to the luminescence of the SrAl2O4:Eu,Dy phosphor.The dependency of the PL intensity on oxide concentration suggests the reabsorption of cellulose emission by the oxide and vice versa.The study of the dielectric properties of composite papers shows the presence of dielectric relaxations at low temperatures(T~−50℃).Similar cellulose materials to those studied can be considered as alternatives for artificial petroleum-based polymers.Low cost,eco-friendliness,biocompatibility,and the simplicity of recycling are among the main advantages of these materials.They are produced from the cellulose which is one of the most abundant renewable materials in nature.The data on the mechanical,dielectric,and optical properties indicate that the papers studied can be used in flexible lighting devices,WLEDs,coating,markers,labels,etc.
Vitalii ChorniiSerhii G.NedilkoMaxim LazarenkoOleksandr AlekseevMariia Sosnovs’kaValerii BarbashOlga YashchenkoSyed Shabhi HaiderYaroslav ZhydachevskyyAndrzej Suchocki
关键词:CELLULOSEPAPERPHOTOLUMINESCENCE
La^(3+)/Eu^(3+)掺杂对KAlSi_(2)O_(6)基红色荧光粉发光性能的影响
2025年
采用高温固相法制备K_(1−x)AlSi_(2)O_(6)∶xEu^(3+)和K_(0.93−x)AlSi_(2)O_(6)∶(0.07Eu^(3+)+xLa^(3+))(x=0.01,0.03,0.05,0.07,0.09,0.11,物质的量分数)红色荧光粉,研究了La^(3+)/Eu^(3+)掺杂对发光强度、荧光寿命、色坐标的影响规律。结果表明:Eu^(3+)单掺杂和Eu^(3+)+La^(3+)双掺杂后红色荧光粉的物相均为白榴石相,未出现新相;随着Eu^(3+)掺杂量的增大,白榴石相由四方结构向立方结构转变。随着Eu^(3+)掺杂量的增大,KAlSi_(2)O_(6)红色荧光粉的发光强度先增后减,当掺杂Eu^(3+)的物质的量分数为0.07时强度最大;随着La^(3+)掺杂量的增加,K_(0.93)AlSi_(2)O_(6)∶0.07Eu^(3+)荧光粉的发光强度先增后减,当La^(3+)掺杂物质的量分数为0.09时强度最大,比未掺杂La^(3+)时提升2倍以上。同时掺杂物质的量分数0.07 Eu^(3+)和0.09 La^(3+)时红色荧光粉的荧光寿命比单掺杂物质的量分数0.07 Eu^(3+)时更长,色坐标由单掺杂Eu^(3+)时的橙色向红色移动,红色成分更明显,表现出优异的红光发射性能。
王之阳王焕平华有杰邓德刚莫志伟高照蒋宗恒徐时清
关键词:激光照明红色荧光粉
无粉白光LED的光谱特性及优化
2025年
无粉白光LED因其在健康照明和光效存在优势而被认为是下一代LED的发展方向。使用NSGA-II算法对五基色无荧光粉LED(5PC-PF-LED)进行光谱优化。优化结果与荧光粉LED的对比测试表明,五基色无粉LED的一般显色指数均大于90,具有较好的颜色还原能力,同时具有较高的光效和较低的蓝光危害,在暗视觉条件下对眼睛更加友好。无粉LED在促进更健康、更高效的照明方面发挥着关键作用。
党熙航
关键词:NSGA-II健康照明
远红光发射荧光粉的制备与热稳定性研究
2025年
为提升远红光发射荧光粉在高温环境中的性能,文章针对远红光发射荧光粉制备实验进行研究,并对实验结果进行了分析。实验结果表明,制备的远红光发射荧光粉在460 nm激发下,发射波长为685 nm,量子产率达82.5%,在120℃下发光强度保持率超过91.0%。在热稳定性测试中,荧光粉在150℃时发光强度保持率为87.0%。该材料具有显著的高温稳定性和优异的发光效率,适合应用于特殊照明环境和医疗检测设备。
董杰
关键词:热稳定性光学性能
白光激光二极管用复合荧光玻璃的制备及性能分析
2025年
蓝色激光激发荧光材料获得白光的照明技术以其亮度高、体积小、照射距离远等优势而引起了广泛关注。然而,制备兼具高显色指数与高光通量的荧光材料仍然是一个挑战。基于此,本研究制备了一种由Y_(3)Al_(3)Ga_(2)O_(12)∶Ce^(3+)(YAGG∶Ce^(3+))荧光玻璃和CaAlSiN_(3)∶Eu^(2+)(CASN∶Eu^(2+))荧光玻璃叠加而成的复合荧光玻璃。YAGG∶Ce^(3+)荧光玻璃的内量子效率高达90.9%,为原始荧光粉的98.15%。此外,它还具有优异的热稳定性,在150℃下保持室温发光强度的94.83%。经优选复合荧光玻璃中YAGG∶Ce^(3+)/CASN∶Eu^(2+)的比例,当6(wt)%YAGG∶Ce^(3+)荧光玻璃与5(wt)%CASN∶Eu^(2+)荧光玻璃复合时,获得了最高的显色指数90.1,光通量为1335.8lm,实现了荧光玻璃基白光LD器件的高显色指数与高光通量的发光。因此,同质结构复合的荧光玻璃被视为一种有潜力的荧光转换材料。
王桂录孔玉强朱永刚郑喜贵马跃龙齐星宇郝用兴
关键词:激光照明复合结构显色指数光通量
磷光敏化荧光白色有机电致发光器件
2025年
通过超薄层插入与掺杂相结合的方式,分别以激光染料DCM(4-(Dicyanomethylene)-2-methyl-6-(4-dimet-hyl-aminostyryl)-4H-pyran)、铱配合物Ir(ppy)3(tris(2-phenylpyridine)iridium)和联苯乙烯衍生物BCzVB(1,4-bis[2-(3-N-ethylcarbazoryl)vinyl]benzene)为红色、绿色和蓝色发射体,制备了磷光敏化荧光白色有机电致发光器件(OLED).通过改变DCM超薄层在CBP:Ir(ppy)3掺杂层中的插入位置实现了白色发光,最高外量子效率为2.5%(电流效率为5.1 cd/A),最高亮度为12400 cd/m^(2),且其中一种器件在1 mA/cm^(2)的电流密度下,国际照明委员会(Commission Internationale de L'Eclairage,CIE)坐标达到了理想白光平衡点(0.33,0.33).白光的获得归因于Ir(ppy)3适合的掺杂比例和DCM适合的插入位置,较好地均衡了红、绿、蓝三基色发光比例.结果表明,通过磷光敏化荧光实现三线态激子将部分能量传递给单线态激子,可望实现高效率白色有机电致发光器件,从而降低能耗并为促进OLED的应用提供更多空间.
邹文静赵玉康吴有智张材荣
关键词:有机电致发光器件激光染料

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陈哲
作品数:113被引量:206H指数:9
供职机构:南昌工程学院
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贺伟
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供职机构:中国科学技术大学
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陈伟
作品数:205被引量:183H指数:9
供职机构:中国科学院半导体研究所
研究主题:激光器 窄线宽 可调谐 稳频 激光
冯涛
作品数:86被引量:210H指数:8
供职机构:华东师范大学
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王海
作品数:25被引量:76H指数:5
供职机构:桂林理工大学材料科学与工程学院
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