Transparent and light-emitting epoxy nanocomposites containing ZnO quantum dots as encapsulating materials for solid state lighting

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	Transparent and light-emitting epoxy nanocomposites containing ZnO quantum dots as encapsulating materials for solid state lighting
	Y. Yang; Y. Q. Li; S. Y. Fu; H. M. Xiao
	2008
发表期刊	Journal of Physical Chemistry C
ISSN	1932-7447
卷号	112 期号:28 页码:10553-10558
摘要	Polymer nanocomposites are usually made by incorporating dried narroparticles into polymer matrices. This would easily lead to aggregation of nanoparticles and then would readily bring about opaqueness for narrocomposites based on functionally transparent polymers. In this work, preparation of highly transparent ZnO quantum dots (ZnO-QDs)/epoxy nanocomposites that can emit intense luminescence was reported for the first time by uniformly dispersing ZnO quantum dots in a transparent epoxy resin via a direct dispersion method. The direct dispersion of ZnO quantum dots without drying in the epoxy matrix could effectively avoid aggregation of fine quantum dots and showed a good dispersity of ZnO-QDs in the epoxy matrix. Such materials showed a high transparency in the visible region and exited a broad emission spectrum peaked at 442 nm. On the other hand, in traditional solid state lighting emission diodes, semiconductor quantum dots are used as phosphors that are attached to the die of the lighting emission diode (LED) lamps for emitting luminescence. In this work, the as-prepared ZnO-QDs/epoxy nanocomposites were successfully employed as packaging materials for solid state lighting emission diodes in which conventional phosphors are not required while the nanocomposite encapsulating materials are responsible for emitting luminescence and thus the encapsulated LED lamps have an innovative structure. Consequently, the as-prepared ZnO-QDs/epoxy nanocomposites are promising for use as novel encapsulating materials in LED technology due to the much simplified encapsulating process.
部门归属	[yang, yang; li, yuan-qing; fu, shao-yun; xiao, hong-mei] chinese acad sci, tech inst phys & chem, beijing 100190, peoples r china. [yang, yang] chinese acad sci, grad sch, beijing 100039, peoples r china. [fu, shao-yun] chinese acad sci, int ctr mat sci, shenyang 110016, peoples r china.;fu, sy (reprint author), chinese acad sci, tech inst phys & chem, beijing 100190, peoples r china;syfu@mail.ipc.ac.cn
关键词	Polymer Nanocomposites Size Quantization Zinc Acetate Nanoparticles Luminescence Colloids Photochemistry Oxide Particles Diodes
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/33279
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. Yang,Y. Q. Li,S. Y. Fu,et al. Transparent and light-emitting epoxy nanocomposites containing ZnO quantum dots as encapsulating materials for solid state lighting[J]. Journal of Physical Chemistry C,2008,112(28):10553-10558.
APA	Y. Yang,Y. Q. Li,S. Y. Fu,&H. M. Xiao.(2008).Transparent and light-emitting epoxy nanocomposites containing ZnO quantum dots as encapsulating materials for solid state lighting.Journal of Physical Chemistry C,112(28),10553-10558.
MLA	Y. Yang,et al."Transparent and light-emitting epoxy nanocomposites containing ZnO quantum dots as encapsulating materials for solid state lighting".Journal of Physical Chemistry C 112.28(2008):10553-10558.