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High-Efficient Eu3+ Red Emission due to Excitation Energy Transfer from Nano-Sized SnO2 Crystals

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Abstract:

By overcoming less excitation efficiency of rare-earth ions due to small oscillator strength (∼10-6) of f-f transition, Eu3+ ions were intentionally introduced to nano-sized semiconductor of tin oxide (SnO2) in silica (SiO2)matrix via a sol-gel route. As a consequence, the excitation energy was significantly absorbed by the nano-sized SnO2 with controlled band-gap energy owing to quantum size effect (QSE) and subsequently transferred from nano-sized SnO2 to the Eu3+ ions doped, resulting in the enhancement of Eu3+ red emission (external quantum efficiency : 75.6 %).

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AICAM 2005 View Preview

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Periodical:

Advanced Materials Research (Volumes 11-12)

Pages:

579-582

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.11-12.579

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Online since:

February 2006

Authors:

Tomokatsu Hayakawa, Masayuki Nogami

Keywords:

Energy Transfer, Eu3+, Glass, Nanoparticle, SnO2 Semiconductor

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© 2006 Trans Tech Publications Ltd. All Rights Reserved

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