Ultrastable red-emitting phosphor-in-glass for superior high-power artificial plant growth LEDs
Ultrastable red-emitting phosphor-in-glass for superior high-power artificial plant growth LEDs
复制标题
用于优质高功率人造植物生长 LED 的超稳定玻璃包红光荧光粉
DOI：
10.1039/c7tc05250b
复制
发表时间：
2018-02-21
影响因子：
6.4
通讯作者：
Qiu, Jianbei
中科院分区：
文献类型：
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作者：
Deng, Jiankun;Zhang, Haoran;Qiu, Jianbei
在玻璃基质中制备了由3.5MgO中心点0.5MgF(2)中心点GeO2:Mn4+ (MMG: Mn4+)荧光粉组成的超稳定红发光玻璃（PiG），用于高性能人工植物生长led （pgl）。所获得的PiG板的导热系数为1.671 W m(-1)K(-1)，外量子效率为27.5%，为高功率人工植物生长led （pgl）的应用提供了坚实的基础。此外，利用36片标题PiG板和420纳米蓝光LED芯片制作了概念验证PGL。MMG: Mn4+荧光粉的420 nm芯片和659nm芯片相结合，提供了与大多数绿色植物光合色素和光敏色素（P-R和P-FR）的吸收波段很好匹配的光谱。正如预期的那样，在室内植物工厂中培养的经pgl处理的乳白菜，经过15天的照射后，处理样品的植物生物量比使用普通R-B LED灯培养的样品高出近48.9%。进一步分析还表明，在抗坏血酸、可溶性蛋白、可溶性糖和总叶绿素水平上也有促进作用。本文提出的PiG策略提供了优越的高功率人工植物生长led，这在生态农业的应用中至关重要。
Ultrastable red-emitting phosphor-in-glass (PiG) consisting of 3.5MgO center dot 0.5MgF(2)center dot GeO2:Mn4+ (MMG: Mn4+) phosphor in a glass matrix was prepared for superior artificial plant growth LEDs (PGLs). These obtained PiG plates show a thermal conductivity of 1.671 W m(-1)K(-1) and an external quantum efficiency of 27.5%, which provides the strong foundation for the application in high-power artificial plant growth LEDs (PGLs). Furthermore, a proof-of-concept PGL using 36 pieces of the title PiG plate and 420 nm-blue LED chip was fabricated. The combination of similar to 420 nm from chip and the similar to 659 nm chip from the MMG: Mn4+ phosphor provide a well-matched spectrum with the absorption bands of photosynthetic pigments and the phytochrome (P-R and P-FR) of most green plants. As expected, the as-fabricated PGL-treated milk-Chinese cabbage cultured in the indoor plant factory showed that after 15 day-irradiation, the plant biomass was nearly 48.9% greater in treated sample than those cultured using the general R-B LED lamps. Further analysis also demonstrated that promotive effect can also be obtained in the level of ascorbic acid, soluble protein, soluble sugar and total chlorophyll. The PiG strategy presented in this paper afforded superior high-power artificial plant growth LEDs, which are crucial in the application of ecological agriculture.