浅谈长余辉发光材料发光机理研究

长余辉发光材料亦称之为磷光材料,是一种重要的发光材料,在工农业、消防、日常生活中都发挥着重要的作用。简述长余辉发光材料的研究进展,介绍长余辉发光材料的最新研究成果,剖析长余辉发光材料发光机理,对长余辉发光材料有着积极的研究参考作用。     

浅析环境友好型稀土长余辉发光涂料

稀土发光材料具有余辉时间长、发光强度高、化学稳定性好等优点,可配制环境友好型长余辉发光涂料。介绍了该发光材料的制备方法及其发光涂料的发光机理。讨论了影响发光涂料性能的因素及其发展趋势。     

耐水性长余辉发光材料的制备及性能

一、产品或技术简介:耐水性长余辉发光材料克服了现有无机长余辉发光材料对环境潮湿敏感、与有机物相容性差的缺点。所得的耐水性长余辉发光材料与现有无机长余辉发光材料的亮度一致。无机长余辉发光材料的耐水解性能很差,1天之内完全水解而失去发光性能,而耐水性长余辉发     

稀土铝酸盐长余辉蓄能发光涂料的研究进展

介绍了铝酸盐长余辉蓄能发光涂料中的主要组分发光材料的特点、物理化学改性以及树脂的选择,综述了国内外长余辉蓄能发光涂料的开发动向以及应用现状,探讨了长余辉蓄能发光涂料存在的问题和发展趋势。     

聚氨酯发光膜生产技术

介绍了以长余辉发光颜料、PU树脂为基料,采用涂布法制备发光膜的生产过程,同时阐述了发光材料的性能及聚氨酯发光膜生产过程中的影响因素。PU发光膜具有生产工艺灵活、发光亮度高、余辉时间长等特点,应用非常广泛。     

稀土掺杂红色长余辉发光材料的研究进展

介绍了稀土掺杂红色长余辉发光材料的研究进展,总结了硫化物、硫氧化物、钛酸盐等基质体系的红色长余辉发光机制。及传统的高温固相法以及溶胶-凝胶法、燃烧法等稀土红色长余辉材料的制备技术,提出了对红色长余辉材料今后发展的看法。     

长余辉发光材料研究新进展

文章系统介绍了目前各种稀土离子激活的长余辉发光材料的种类、特性、组成、结构、发光机理和制备技术等方面的最新进展。同时根据长余辉发光材料领域的研究现状,探讨了长余辉发光材料领域的发展方向与前景。     

高发光长余辉发光涂料的制备及性能

按化学式Sr0.994Al2O:Eu2+0.002,Dy3+0.004准备原料,并添加碳酸氢铵作为成孔剂,采用高温固相反应法制备了高发光长余辉材料.探究了成孔剂对长余辉材料晶体结构及余辉性能的影响.以高发光长余辉材料、含氟丙烯酸树脂、颜填料和助剂制备出标线涂料.结果表明,成孔剂的加入不改变长余辉材料的晶体结构,但能有效提高其发光强度.当颜基比为0.50,长余辉材料占填料质量的40％时,涂料中发光中心数量达到最大,发光性能趋于稳定.发光涂层经过日间环境照射后,在暗环境中可持续发光7 h以上.     

稀土掺杂红色长余辉发光材料的研究进展

介绍了稀土掺杂红色长余辉发光材料的研究进展,总结了硫化物、硫氧化物、钛酸盐等基质体系的红色长余辉发光机制.介绍了传统的高温固相法以及溶胶-凝胶法、燃烧法等稀土红色长余辉材料的制备技术.提出了对红色长余辉材料今后发展的看法.     

稀土蓝色长余辉发光材料的研究进展

综述了稀土元素掺杂蓝色长余辉发光材料的研究进展,总结了硫化物、铝酸盐、硅酸盐等基质体系的蓝色长余辉发光材料,对有关制备蓝色长余辉发光材料的方法进行了描述,比较了各种制备方法的优缺点。     

水热法合成SrAl2O4:Eu2+,Dy3+长余辉材料

研究了SrAl2O4：Eu^2 ，Dy^3 长余辉材料的一种新合成方法。首先利用水热法制备出该发光材料的前驱体，然后将此前驱体粉体在还原气氛下高温烧结，得亮度高，余辉时间长的洲SrAl2O4：Eu^2 ，Dy^3 超细长余辉材料，并对其发光性能进行了研究。并对水热法和复合沉淀法合成的此种材料进行了比较。     

Progress and perspective of iridium-containing phosphorescent polymers for light-emitting diodes

Phosphorescent polymer light-emitting diodes (PhPLEDs) have become the subject of intensive investigation due to their promising applications for displays and lighting. This review presents recent progress in single iridium-containing phosphorescent polymers for PhPLEDs according to their different emitting colors. These phosphorescent polymers are further classified as main chain, side chain, and chelating-types based on the manner in which the host and dopant units are connected. The relationship between the polymer structures and electroluminescence properties is the main focus of this review. Finally, some important rules for designing new efficient phosphorescent polymers are discussed.     

添加SiO_2对PbO－Bi_2O_3－B_2O_3玻璃结构和荧光性能的影响

研究了添加ＳｉＯ＿２对ＰｂＯ－Ｂｉ＿２Ｏ＿３－Ｂ＿２Ｏ＿３玻璃结构和荧光性能的影响，发现用ＳｉＯ＿２取代部分Ｂ＿２Ｏ＿３时，［ＳｉＯ＿４］四面体与［ＢＯ＿３］三角形相连接并进入玻璃的结构网络中。随着ＳｉＯ＿２引入量的增加，８＿２Ｏ＿３的减少，玻璃结构更紧凑，密度增加。发射光谱表明，玻璃的最大发射峰位置随ＳｉＯ＿２的引入而向长波方向移动。     

低温快烧卫生瓷坯釉配方的研究

本项目是国家建材局下达的“八·五”科技攻关项目。本文对低温快烧卫生瓷坯釉配方及其原料性能、工艺特点等进行了广泛深入的研究,在实验室试验的基础上,进行了生产条件下的扩大中间试验,取得了较好的效果,达到了国家建材局合同规定的指标,1993年5月通过了国家建材局主持的专家评审。     

Ring-opening metathesis polymerisable charged platinum(II) complexes: Towards enhanced phosphorescent quantum yields by aggregation in polymers

Phosphorescent copolymers bearing a covalently linked charged platinum(II) dye were prepared using ring-opening metathesis polymerisation (ROMP). Absorption, emission as well as dynamic light scattering measurements of these polyelectrolytes indicate the formation of red luminescent aggregates in solution with quantum yields up to 17% and luminescence decay times in the range of 250-300 ns. Neither the quantum yield nor lifetime of the luminescence is affected by the presence of oxygen. The resulting polymers are solution processible and exhibit good film-forming properties. In contrast, the mononuclear platinum species are poorly soluble and non-luminescent at room temperature in deaerated solution.     

Deep-Blue Phosphorescent Emitters with Phosphoryl Groups for Organic Light-Emitting Diodes by Solution Processes

The new deep-blue iridium complex, Ir(dppfm)₂pic, consisting of a phosphoryl group at the 3′-position of the phenyl ring and a methyl group at the 4-position of pyridine, was synthesized and characterized for applications in organic light-emitting diodes (OLEDs). Ir(dppfm)₂pic exhibited an emission peak of 455 nm and high photoluminescence quantum yields of 73 %. Phosphorescent OLEDs based on Ir(dppfm)₂pic exhibited a maximum external quantum efficiency of 7.8 % and Commission Internationale de l’Eclairage (CIE) coordinates of (0.15, 0.22).     

CONTROL FOR LUMINOUS FLAME FIRING IN GLASS FURNACES*

Luminous-flame firing of natural gas in glass furnaces has been accomplished inefficiently and with, difficulty for many years in an attempt to secure the advantages of the luminosity characteristics. Luminosity in the gas flame is now secured by retardation of combustion between overlying layers of air and gas, the resulting flame being particularly adapted for glassmelting. A successful method for controlling the length and shape of the luminous flame in a glass furnace involves the mixing of spent gases from the flue with the incoming fuel gas.     

Assessment of phosphorescent paint effects on microalgae cultivation

Light is the most important factor involved in the growth of photosynthetic organisms, and low efficiency of artificial light systems imposes higher cultivation costs. Phosphorescent paints can emit light for a few hours, and so may be appropriate to accumulate scattered light. In this study, the effects of blue and green phosphorescent paints on growth rate, biomass production and chlorophyll content of three different microalgae, Scenedesmus dimorphus, Chlamydomonas reinhardtii and Chlorella vulgaris were investigated. These strains were cultivated in broth medium in three glass bowls. Half of the first two bowls was stained with blue or green phosphorescent paints (B and G treatment), while the third one was unstained and used as the control (C treatment). All measured parameters were higher in B. The results indicate that partial staining of culturing bowls by blue phosphorescent paint can be an economic approach to increase light efficiency in cultivating microalgae.     

中国陶瓷工业发展的实践与探索

本文总结了二十年来中国陶瓷工业的发展实践,对中国陶瓷工业现代化发展走向作了分析,为决策咨询,拓宽决策视野,行业产品功能定位,创业规划及实施,建立发展陶瓷业新概念提供参考依据。主要内容包括：（１）正确的政策、先进的工艺技术与装备,自主开发是使中国陶瓷业由传统走向现代的成功之路;（２）从材料学的角度看,陶瓷业是当代世界上最具生命力的工业之一;（３） 中国陶瓷业必须依靠科技,促进技术进步,走现代化工业的道路;（４）发展符合中国国情具有中国特色的中国陶瓷工业;（５） 中国陶瓷工业应沿着由古到今、由小到大、由大而强的道路走;（６）原料、能源、环保、产品功能和性能及其文化艺术性四大问题是影响未来中国陶瓷业发展的关键;（７）发展中国陶瓷业的动力。     

铝酸钙蓄光型发光釉料的研究

研究了各种(稀土)掺杂铝酸钙的蓄光型发光釉料及其制备方法，以高温固相法、共沉淀法、微波法、溶胶-凝胶法等制备发光材料，并通过控制不同原料的配比、pH值、温度等条件，探讨了上述因素变化与材料发光特性之间的关系。