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。     

超细碱土铝酸盐长余辉发光材料制备近期进展

对超细碱土铝酸盐长余辉发光材料的制备方法及其制备后产品的性能做一综述,分别介绍了燃烧法、溶胶-凝胶法和水热法在制备超细碱土铝酸盐长余辉发光材料中的应用.着重对溶胶-凝胶法制备超细碱土铝酸盐长余辉发光材料的过程及得到的产品性能做了详细阐述.     

铝酸盐长余辉发光材料研究进展

系统地介绍了铝酸盐长余辉的发展历史、发光机制和制备方法,评述了铝酸盐长余辉材料研究现状,对铝酸盐长余辉材料的发展趋势进行了展望。     

铝酸盐长余辉材料研究进展

文章系统地介绍了铝酸盐长余辉发光材料的发展历史、发光机制以及制备方法,对近年众多的研究进行了对比分耩,展望铝酸盐长余辉材料的研究和发展趋势以及应用前景。     

长余辉发光材料研究进展

概述了长余辉发光材料的研究进展。首先介绍了长余辉发光材料常见的分类和研究的历史进程,包括硫化物长余辉材料、铝酸盐长余辉材料及硅酸盐长余辉材料。其次概括了常见的长余辉材料制备方法,包括高温固相反应法、燃烧法、溶胶凝胶法、共沉淀法、水热合成法、微波法等。最后给出了红色长余辉发光材料发光强度的提高是今后的发展方向之一。     

钛酸盐体系长余辉发光材料研究进展

钛酸盐基质长余辉发光材料具有稳定的物化性能,是一类新型的储能和环保型材料。综述了近年来钛酸盐体系长余辉发光材料的最新研究进展,总结了掺杂离子、基质种类、电荷补偿以及制备方法等对钛酸盐长余辉发光材料发光特性的影响,并提出了今后可能的研究和应用发展方向。     

Cr3+掺杂近红外长余辉发光材料的研究进展

Cr3+掺杂近红外长余辉发光材料因其优异的长余辉性能在生物成像等应用领域受到广泛关注。本文主要对近年来有关Cr3+掺杂近红外长余辉发光材料的制备方法和性能改善方法进行归纳总结,并对今后的发展方向进行展望。     

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。     

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。     

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。     

稀土离子掺杂铝酸盐长余辉发光材料的研究进展

综述了长余辉发光材料的国内外研究进展，并以稀土离子激活的铝酸盐体系为例，从发光机理、合成方法和研究现状等方面进行了全面的分析。特别对飞秒激光诱导下的长余辉发光玻璃的研究情况进行了详细介绍，对发展前景和研究方向进行了展望。     

Beryllium-Based,High-Triplet-Energy Material as a Host for Blue Phosphorescent Organic Light-Emitting Diodes

A beryllium-based compound, bis[2-(3,5-dimethylpyrazol-1-yl)pyridin-3-olate] beryllium (DmPPBe), was designed and synthesized as a high-triplet-energy host material for blue phosphorescent organic light-emitting diodes. The DmPPBe host showed a high triplet energy of 2.75 eV due to the high-triplet-energy 2-(3,5-dimethylpyrazol-1-yl)pyridin-3-ol ligand. The DmPPBe host was effective as the host material for blue phosphorescent organic light-emitting diodes and a high quantum efficiency of 17.7 % was achieved.     

铝酸盐长余辉蓄光材料的研究与制备

系统回顾了铝酸盐长余辉蓄光材料的研究历程,综合评述了铝酸盐长余辉蓄光材料的长余辉机理与制备,并对其研究进行了展望。     

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.     

Color stability and suppressed efficiency roll-off in white organic light-emitting diodes through management of interlayer and host properties

Color stability and efficiency roll-off of white light-emitting diodes (WOLEDs) with blue fluorescent and red phosphorescent emitting materials were manipulated by controlling the charge transport properties of interlayer and triplet host materials. A pure white emission was observed in WOLEDs with a bipolar interlayer and a hole transport type triplet host material. A white color coordinate of (0.31, 0.35) and a current efficiency of 14.4 cd/A were obtained. In addition, color index of WOLEDs could be kept stable up to a high luminance of 10,000 cd/m² and an efficiency roll-off was also suppressed.     

塑料发光材料的研究

通过对长余辉蓄能发光粉(以下简称发光粉)的包覆处理,改善了塑料发光材料的发光效果。采用硬脂酸、二甲基硅油、硅烷偶联剂及SiO2溶胶分别包覆发光粉,发现对发光粉进行包覆处理后,塑料材料的发光效果均比未包覆的好;经二甲基硅油包覆发光粉制成的塑料发光材料的相对发光强度最高;以硬脂酸包覆的方法未能如其他包覆方法那样有效地阻断机器加工对发光粉发光性能的削弱。     

Protein Nanofibrils Balance Colours in Organic White-Light-Emitting Diodes

In this review we discuss our efforts in using protein nanowires (amyloid fibrils) as structural templates for use in organic electronics applications, mainly focusing on organic light-emitting diodes (OLEDs). We discuss different ways of functionalising amyloid fibrils. In one method, the amyloid fibril is used to organise luminescent polymers. We also discuss an alternative preparative method, resulting in amyloid-like materials functionalised with phosphorescent organometallic complexes. We discuss the incorporation of such materials in organic electronics devices, such as OLEDs. When amyloid fibrils are integrated into the OLED active layer, consisting of an electroluminescent blue-emitting polyfluorene, the efficiency of the device increases by a factor of 10. Furthermore, when amyloid fibrils incorporating phosphorescent metal complexes are used, the phosphorescent guest functions more efficiently than in the corresponding case where naked metal complexes are used. By preparing amyloid fibrils incorporating green- and red-emitting phosphorescent complexes, and combining these with blue-emitting polyfluorene, we can fabricate devices for white-light emission. The origin of the effects of the biomaterial on device performance is discussed.     

Effect of triplet multiple quantum well structures on the performance of blue phosphorescent organic light-emitting diodes

We investigate multiple quantum well [MQW] structures with charge control layers [CCLs] to produce highly efficient blue phosphorescent organic light-emitting diodes [PHOLEDs]. Four types of devices from one to four quantum wells are fabricated following the number of CCLs which are mixed p- and n-type materials, maintaining the thickness of the emitting layer [EML]. Remarkably, such PHOLED with an optimized triplet MQW structure achieves maximum luminous and external quantum efficiency values of 19.95 cd/A and 10.05%, respectively. We attribute this improvement to the efficient triplet exciton confinement effect and the suppression of triplet-triplet annihilation which occurs within each EML. It also shows a reduction in the turn-on voltage from 3.5 V (reference device) to 2.5 V by the bipolar property of the CCLs.