Enhancement of Yellow Light Extraction Efficiency of Y <sub>3</sub>Al <sub>5</sub>O <sub>12</sub>:Ce <sup>3+</sup> Ceramic Converters Using a 2-D TiO <sub>2</sub> Hexagonal-Lattice Nanocylinder Photonic Crystal Layer
The effects of 2-D hexagonal-lattice TiO <sub>2</sub> photonic crystal layers on the directional light extraction efficiency of low-scattering (Y <sub>1-x</sub>Ce <sub>x</sub>) <sub>3</sub>Al <sub>5</sub>O <sub>12</sub> (YAG:Ce...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IEEE
2016-01-01
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| Series: | IEEE Photonics Journal |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/7414383/ |
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| Summary: | The effects of 2-D hexagonal-lattice TiO <sub>2</sub> photonic crystal layers on the directional light extraction efficiency of low-scattering (Y <sub>1-x</sub>Ce <sub>x</sub>) <sub>3</sub>Al <sub>5</sub>O <sub>12</sub> (YAG:Ce <sup>3+</sup>) ceramic converters have been investigated. The hexagonal-lattice TiO <sub>2</sub> patterns were fabricated by an electron beam lithography process. The optimized yellow directional light extraction enhancement by a factor of 4.4 is achieved with a 2-D photonic crystal layer having a diameter of 430 nm, a lattice constant of 590 nm, and a height of 350 nm. A 3-D finite-difference time-domain model has also been developed to study the geometric parameters of the photonic crystal layer, yielding results that are consistent with our measured data. |
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| ISSN: | 1943-0655 |