✦ LIBER ✦

Optical properties of organic/inorganic nanocomposite sol-gel films containing LaPO4:Er,Yb nanocrystals

✍ Scribed by Bok Yeop Ahn; Sang Il Seok; Suk-In Hong; Jae-Seok Oh; Ha-Kyun Jung; Woon Jin Chung

Publisher: Elsevier Science
Year: 2006
Tongue: English
Weight: 221 KB
Volume: 28
Category: Article
ISSN: 0925-3467
DOI: 10.1016/j.optmat.2005.02.003

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✦ Synopsis

The LaPO 4 :Er,Yb nanocrystals of average particle size about 5-7 nm were prepared from solution-based reaction. The nanocrystals were successfully incorporated into the sol-gel organic/inorganic hybrid matrix up to 30 wt.% without phase separation. The nanocomposite films showed strong luminescence intensity in the near infrared region around 1550 nm after heat treatment below 150 °C. The refractive indices of the composite films were adjustable by controlling both the Zr/Si ratio in the sol-gel hybrid matrices and the contents of the LaPO 4 :Er,Yb nanocrystals incorporated in the matrices. The propagation loss of the composite films was about 0.5 dB/cm, and that was prone to be increased with increasing the contents of the LaPO 4 :Er,Yb nanocrystals.

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