Abstract

We obtained upconversion (UC) light-emitting photonic materials (YbPO4:Er) with an inverse opal structure by the self-assembly technique in combination with a solgel method. The effect of the photonic stopband on the UC luminescence of the H11/22, S3/24I15/24, and F9/2,4I15/24 transitions of Er3+ has been observed in the inverse opals of the Er3+-doped YbPO4. Significant suppression of the UC emission was detected if the photonic bandgap overlapped with the Er3+ ions emission band, while enhancement of the UC emission occurs if the emission band appears at the edge of the bandgap.

© 2011 Optical Society of America

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