Directional light extraction enhancement from GaN-based film-transferred photonic crystal light-emitting diodes

Chun-Feng Lai, Chia-Hsin Chao, Hao-Chung Kuo, His-Hsuan Yen, Chia-En Lee, Wen-Yung Yeh

doi:10.1063/1.3106109

Directional light extraction enhancement from GaN-based film-transferred photonic crystal light-emitting diodes

DOI PDF 被引用文献7件

Chun-Feng Lai

National Chiao-Tung University 1 Department of Photonics and Institute of Electro-Optical Engineering, , Hsinchu 300, Taiwan
Chia-Hsin Chao

Industrial Technology Research Institute 2 Electronics and Opto-electronics Research Laboratories, , Hsinchu 310, Taiwan
Hao-Chung Kuo

National Chiao-Tung University 1 Department of Photonics and Institute of Electro-Optical Engineering, , Hsinchu 300, Taiwan
His-Hsuan Yen

National Chiao-Tung University 1 Department of Photonics and Institute of Electro-Optical Engineering, , Hsinchu 300, Taiwan
Chia-En Lee

National Chiao-Tung University 1 Department of Photonics and Institute of Electro-Optical Engineering, , Hsinchu 300, Taiwan
Wen-Yung Yeh

Industrial Technology Research Institute 2 Electronics and Opto-electronics Research Laboratories, , Hsinchu 310, Taiwan

書誌事項

公開日: 2009-03-23

DOI

10.1063/1.3106109

公開者: AIP Publishing

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説明

<jats:p>Experimental investigation of the directionality in the far-field pattern and light extraction enhancement in collected cone were performed in GaN-based film-transferred photonic crystal (PhC) light-emitting diodes (FTLEDs). Angular-resolved measurement revealed directional profile and azimuthal anisotropy in the far-field distribution with guided modes extraction. Good agreement according to Bragg’s diffraction theory and free photon band structure were achieved. The light enhancement in PhC FTLEDs compared to non-PhC FTLEDs within the collection cone angle was obtained according to measured three-dimensional far-field patterns. In a ±20° collection cone, collected light was enhanced by a factor of ∼2.4 for the collimated PhC FTLED.</jats:p>