An Investigation on Eu3+ Doped CaLa2ZnO5 Novel Red Emitting Phosphors for White Light-Emitting Diodes

Autor:	Dong Hyun Bae, Vengala Rao Bandi, Hyun-Joo Woo, Kiwan Jang, Jaeho Yoon, Bhaskar Kumar Grandhe, Ho-Seub Lee, Ji-Yeon Park, Jung Hyun Jeong, Soung Soo Yi
Rok vydání:	2013
Předmět:	Materials science Photoluminescence Dopant business.industry Doping Biomedical Engineering Sintering Bioengineering Phosphor General Chemistry Condensed Matter Physics Optoelectronics General Materials Science Emission spectrum Luminescence business Diode
Zdroj:	Journal of Nanoscience and Nanotechnology. 13:848-852
ISSN:	1533-4899 1533-4880
DOI:	10.1166/jnn.2013.6037
Popis:	A novel phosphor namely CaLa2ZnO5 doped with Eu3+ ions were prepared by conventional solid state reaction method. We have studied and optimized various constraints like sintering temperature, sintering time and dopant concentration. XRD, SEM profiles have been studied to explore its structural properties. Luminescence properties of these phosphors have been characterized by means of their photoluminescence (PL) spectra. We have noticed that the emission intensity of CaLa2ZnO5:Eu3+ phosphors strongly depend on its sintering temperature and Eu3+ concentration. Moreover, their PL spectra reveals that CaLa2ZnO5:Eu3+ phosphors exhibits a strong luminescence of 5D(0)_7F(2) transition at 627 nm under the excitation of 468 nm, which correspond to the popular emission line from a GaN based blue light-emitting diode (LED) chip. The obtained results of the prepared Eu3+ doped phosphors are very much encouraging and they are potentially useful in the development of new solid-state lightning devices.
Databáze:	OpenAIRE
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