Ultrasound Synthesis of Y2O3: Dy3+ Nanophosphor: Structural and Photometric Properties Suitable for wLEDs

被引：0

作者：

Marappa, B. ^{[1
,2
]}

Rudresha, M. S. ^{[2
]}

Nagabhsuhana, H. ^{[3
]}

Basavaraj, R. B. ^{[3
]}

Prasad, B. Daruka ^{[4
]}

机构：

[1] Sree Siddaganaga Coll Arts Sci & Commerce Women, Tumkur 572102, India

[2] Sri Siddhartha Acad Higher Educ, Agalakote 572105, Tumkur, India

[3] Tumkur Univ, Prof CNR Rao Ctr Adv Mat, Tumkur 572103, India

[4] VTU, BMS Inst Technol & Management, Dept Phys, Bangalore 560064, Karnataka, India

来源：

61ST DAE-SOLID STATE PHYSICS SYMPOSIUM | 2017年 / 1832卷

关键词：

Ultrasound; mimosa pudica; nanostructures; sonication time;

D O I：

10.1063/1.4980383

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The facile ultrasound synthesis of Y2O3:Dy3+ nanostructures by using bio-surfactant mimosa pudica leaves extract. The concentration of bio-surfactant was the key factor in controlling the morphology of Y2O3 nanostructures. The formation of different morphologies of Y2O3:Dy3+ was characterized by SEM, TEM and HRTEM. The PXRD data and Rietveld analysis evident the formation of single phase Y2O3 with cubic crystal structure. The influence of Dy3+ concentration on the structure morphology, UV absorption, and PL emission of Y2O3:Dy3+ nanostructures were investigated systematically. Y2O3:Dy3+ exhibits intense warm white emission with CIE chromaticity coordinates (0.32, 0.33) and CCT value is 5525 K which corresponds to vertical day light. SEM micrographs showed superstructure morphology influenced by both sonication time as well as surfactant concentration. Pl emission spectra shows three intense peaks observed at 480, 574 and 666 nm attributed to the Dy3+ transitions. The photometric properties were studied by evaluating the CIE, CCT diagrams and the results were very fruitful in making the white light emitting diodes. This method has been considered to be the cost effective and eco-friendly to synthesize nanomaterials with superior morphology suitable for display device applications.

引用

页数：3

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