Skip to main content

Improved Photoluminescence of Y3Al5O12:Ce Nanoparticles by Silica Coating

Buy Article:

$51.00 plus tax (Refund Policy)


Nanoscaled Y3Al5O12:Ce (YAG:Ce) particles prepared through a coprecipitation method and heated to elevated temperatures were treated in different weights with tetraethyl orthosilicate at room temperature for surface coating. The IR absorption measurements attested to the presence of silica in YAG:Ce by a broad absorption band at 1000–1400 cm−1, while maintaining a cubic structure and constant lattice parameters as revealed from the X-ray diffraction analysis. Transmission electron micrographs also presented the encapsulation of YAG:Ce nanoparticles in silica as the IR results. The optical properties of photoluminescence (PL) of these silica-coated YAG:Ce were found to depend on the quantity of YAG:Ce nanoparticles in the coating solution with an optimal weight ratio of 0.16 (silica/YAG:Ce). The increased PL intensity of these YAG:Ce after silica coating was proposed to result from the quenching inhibition of surface states in YAG:Ce nanoparticles and the increased light extraction from the silica/YAG:Ce interface.

Document Type: Research Article


Affiliations: 1: Center for Micro/Nano Science and Technology, National Cheng Kung University, Tainan 70101, Taiwan 2: Department of Materials Science and Engineering, National Cheng Kung University, Tainan 70101, Taiwan

Publication date: June 1, 2010


Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more
Real Time Web Analytics